summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/doc/latex/dialogl
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2011-01-20 22:23:40 +0000
committerKarl Berry <karl@freefriends.org>2011-01-20 22:23:40 +0000
commit07899da1626d7e1e1d782a72ece3588442da6c7e (patch)
treed5b1de235090a5af9517f8525a508dfb4f4c8a6f /Master/texmf-dist/doc/latex/dialogl
parent26a263f4b5fc1171444b7d04d05b1831317f36b5 (diff)
rm dialogl, noinfo license, author sadly deceased
git-svn-id: svn://tug.org/texlive/trunk@21137 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/latex/dialogl')
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/animals.tex217
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/animals2.tex26
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/cnvunits.tex134
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/codialog.dvibin166052 -> 0 bytes
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/codialog.tex2461
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/dia-driv.dvibin118556 -> 0 bytes
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/dia-driv.tex246
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/diatest.tex162
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/fontmenu.tex67
-rw-r--r--Master/texmf-dist/doc/latex/dialogl/listout.tex3130
10 files changed, 0 insertions, 6443 deletions
diff --git a/Master/texmf-dist/doc/latex/dialogl/animals.tex b/Master/texmf-dist/doc/latex/dialogl/animals.tex
deleted file mode 100644
index dcce0c32029..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/animals.tex
+++ /dev/null
@@ -1,217 +0,0 @@
-% Animals (in TeX, no less!!!)
-%
-% This is the program that uses a binary tree of questions to
-% guess the type of animal of which the user is thinking.
-%
-% Andrew Marc Greene, March-April 1988
-%
-%%% modified May 1991, Michael Downes:
-%%% ---removed path names to leave bare file names
-%%% ---added animals2.tex so that you can repeat without
-%%% restarting TeX
-%%% ---added code so that lowercase and uppercase user
-%%% responses will both be recognized.
-%
-% Moral support (i.e., ``You can't do that! Show us!'')
-% provided by the Student Information Processing Board
-% of MIT.
-%
-% Instructions on running this program:
-%
-% tex animals
-%
-% Think of an animal. The program will try to guess your animal.
-%
-% You will be asked a whole bunch of yes/no questions. This is a
-% spartan implementation, so answer with a capital Y or N. When
-% the program finishes going through its tree, it will either have
-% guessed your animal or it will ask you to enter a question that
-% it can ask to differentiate between your animal and its guess.
-% It will then ask you which one is `yes.'
-
-% Here's where I declare all my variables, etc.
-%
-% ``curcode'' is the current index into the data file.
-% ``temp'' is a temporary holding variable.
-% ``lc'' is a loop counter
-% ``ifamg'' is a general-purpose flag. amg are my initials.
-% ``ifreploop'' controls loop repetitions.
-% ``ifmainlooprep'' controls repetitions of the main loop.
-% ``inp'' is the input file.
-% ``outp'' is the output file.
-% ``amgY'' and ``amgN'' are character constants. Why I did it this way I
-% don't remember.
-%
-\newcount\curcode\curcode=1\newcount\temp\temp=0\newcount\lc
-\newif\ifamg\newif\ifyn\newif\ifreploop\newif\ifmainlrep
-\newread\inp\newwrite\outp\def\foo{}
-\def\amgY{Y}\def\amgN{N}
-
-% The data file consists of records stored in the following format:
-%
-% Record Number <newline>
-% Question <newline>
-% If-Yes-Goto-Record Number <newline>
-% If-No-Goto-Record Number <newline>
-%
-% The following routine scans the data file until it reaches the
-% record requested in \curcode
-%
-\def\Scan{%
-{\loop
- \global\read\inp to \foo
- \ifnum\foo=\curcode\amgfalse\else\amgtrue\fi
- \ifamg\read\inp to \foo\read\inp to \foo\read\inp to \foo
-\repeat}}
-
-% The following routine displays the question and waits for a Y or N
-% answer
-%
-\def\Query{%
-{\read\inp to \foo
-\immediate\write16{}%
-\message{\foo}%
-\GetYN
-\ifyn
- \read\inp to \foo\global\curcode=\foo\read\inp to \foo
-\else
- \read\inp to \foo\read\inp to \foo\global\curcode=\foo
-\fi
-}}
-
-% The following routines deal with the user's input.
-% \vread (verbatim read) ignores <newline>s and makes <space>s normal
-% \GetYN gets input and repeats until it gets a Y or N response.
-%
-\def\vread#1{{\catcode`\^^M=9\catcode`\ =12\global\read-1 to #1}}
-\def\first#1#2\end{#1}
-%
-\def\GetYN{%
-{\loop
-\vread{\bar}%
-\edef\bar{\uppercase{\def\noexpand\bar{%
- \expandafter\first\bar\empty\end}}}\bar
-\reploopfalse
-\if Y\bar\global\yntrue\else
- \if N\bar\global\ynfalse\else\replooptrue\fi\fi
-\ifreploop
-\immediate\write16{Hey, you! Answer Y or N, please.}%
-\message{Please enter Y or N --> }%
-\repeat
-}}
-
-% The following routine is called if the ``Goto-Record'' is -1,
-% meaning that the program didn't guess correctly and is clueless.
-% It gets the new animal and the differentiating question, and
-% modifies the data file. Actually, it makes a modified copy of
-% the file, then copies the temporary new one over the old outdated
-% one.
-%
-\def\NewAnimal{
-\immediate\write16{Well, I'm stumped. What animal did you have in mind?}
-\vread{\usersanimal}
-\immediate\write16{OK. What question would let me tell the difference?}
-\vread{\userquery}
-\immediate\write16{Is the answer to that question Yes or No if I ask about}
-\message{\usersanimal? }
-\GetYN
-\curcode=-1
-\Scan
-\read\inp to \lastcode\lc=\lastcode
-\closein\inp
-%
-% Open up the files. These names are system-dependent. *FLAG*
-%
-\openin\inp=animal.dat
-\ifeof\inp \errmessage{Unable to open animal.dat!}\fi
-\immediate\openout\outp=newaniml.dat
-%
-% Read through the inp file, copying all records that don't need to
-% be changed, outputting modified versions of the changed ones (and
-% discarding the old), and appending the new records.
-%
-{\loop
- \read\inp to \foo
- \amgtrue
- \ifnum\foo=\temp\amgfalse\fi
- \ifnum\foo=-1 \amgfalse\fi
- \ifamg\immediate\write\outp{\foo}%
- \read\inp to \foo\immediate\write\outp{\foo}%
- \read\inp to \foo\immediate\write\outp{\foo}%
- \read\inp to \foo\immediate\write\outp{\foo}%
- \amgtrue
- \else\ifnum\foo=\temp
- \immediate\write\outp{\foo}%
- \immediate\write\outp{\userquery}%
- \immediate\write\outp{\number\lc}%
- \global\advance\lc by 1
- \immediate\write\outp{\number\lc}%
- \read\inp to \animal\read\inp to \foo\read\inp to \foo
- \amgtrue
- \else
- \lc=\lastcode
- \ifyn\WriteUsers\WriteAnimal
- \else\WriteAnimal\WriteUsers
- \amgfalse\fi
- \fi\fi
- \ifamg
-\repeat}
-\closein\inp
-\immediate\write\outp{-1}
-\immediate\write\outp{\number\lc}
-\immediate\closeout\outp
-%
-% Now copy the temporary file over the original one
-%
-% These filenames are also system-dependent. *FLAG*
-%
-\openin\inp=newaniml.dat
-\ifeof\inp \errmessage{Unable to open newaniml.dat!}\fi
-\immediate\openout\outp=animal.dat
-{\endlinechar=-1
- \loop
- \read\inp to \foo
- \immediate\write\outp{\foo}
- \amgtrue
- \ifeof\inp\amgfalse\fi
- \ifamg\repeat}
-\immediate\closeout\outp
-}
-%
-% This routine is called by NewAnimal and writes the record for
-% the user's new animal
-%
-\def\WriteUsers{
-\immediate\write\outp{\number\lc}
-\immediate\write\outp{Is it \usersanimal?}
-\immediate\write\outp{0}
-\immediate\write\outp{-1}
-\global\advance\lc by 1 }
-
-% This one writes the modified old animal
-%
-\def\WriteAnimal{
-\immediate\write\outp{\number\lc}
-\immediate\write\outp{\animal}
-\immediate\write\outp{0}
-\immediate\write\outp{-1}
-\global\advance\lc by 1 }
-
-% Now we get into the main routine.
-% It simply repeats the scan-query loop until it gets a 0 (right answer)
-% or a -1 (wrong answer, I'm stumped), and calls the appropriate routine.
-%
-\def\maybecontinue{\input animals2.tex
- \maybecontinue}
-
-\maybecontinue
-
-% Ah, the joys of a job well-done. We can now exit to the system, knowing
-% that the world is a slightly better place for our efforts.
-%
-% The following line of code, probably the most profound in the entire
-% program, sums up this philosophy of life in four characters. The
-% Puritan work ethic is embodied in this amazingly meaning-laden
-% command designed by Donald Knuth.
-
-\end
diff --git a/Master/texmf-dist/doc/latex/dialogl/animals2.tex b/Master/texmf-dist/doc/latex/dialogl/animals2.tex
deleted file mode 100644
index 5096c1a55d9..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/animals2.tex
+++ /dev/null
@@ -1,26 +0,0 @@
-\openin\inp=animal.dat
-\ifeof\inp \errmessage{Unable to open animal.dat!}\fi
-\loop
- \temp=\curcode
- \Scan
- \Query
- \mainlreptrue
- \ifnum\curcode=0
- \immediate\write16{%
- Thank you for using Animals. I'm glad I got it right.}
- \mainlrepfalse
- \else
- \ifnum\curcode=-1 \NewAnimal\mainlrepfalse\fi
- \fi
-\ifmainlrep
-\repeat
-
-\closein\inp
-\message{Wanna go again? }%
-\GetYN
-\ifyn
- \curcode=1 % initialization
-\else
- \def\maybecontinue{}%
-\fi
-\endinput
diff --git a/Master/texmf-dist/doc/latex/dialogl/cnvunits.tex b/Master/texmf-dist/doc/latex/dialogl/cnvunits.tex
deleted file mode 100644
index adf6e79165e..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/cnvunits.tex
+++ /dev/null
@@ -1,134 +0,0 @@
-\newdimen\zdim \newdimen\tempdim \newdimen\tempdima
-
-% Conversion factors:
-%
-% According Scaled Rational Prime
-% Unit to TeX Points Form Factorization
-%-----------------------------------------------------------------
-% 1 sp 0.00002 pt 1 1/65536 pt 1 / 2^16
-% 1 mm 2.84526 pt 186467 7227/2540 pt 3*3*11*73 / 2*2*5*127
-% 1 cm 28.45274 pt 1864679 7227/254 pt 3*3*11*73 / 2*127
-% 1 pt 1.0 pt 65536 100/7227 in 2*2*5*5 / 3*3*11*73
-% 1 pc 12.0 pt 786432 12/1 pt
-% 1 dd 1.07 pt 70124 1238/1157 pt 2*619 / 13*89
-% 1 cc 12.8401 pt 841489 14856/1157 pt 2*2*2*3*619 / 13*89
-% 1 bp 1.00374 pt 65781 803/800 pt 11*73 / 2*2*2*2*2*5*5
-% [1/72 in]
-% 1 in 72.2699 pt 4736286 7227/100 pt 3*3*11*73 / 2*2*5*5
-% [2.54 cm] [254/100 cm]
-
-\def\points#1#2#3{\tempdim#2\relax
- \edef#3{\csname cnvunits#1\expandafter\endcsname\the\tempdim}%
-}
-
-\def\inches#1#2#3{%
- \tempdim=#2\relax
- \tempdima=\ifdim\tempdim<\zdim -\fi\tempdim % absolute value
- \roundup\tempdima{#1}{in}%
-% In the interest of maximum accuracy we push \tempdima as near
-% to \maxdimen as possible before dividing, using the prime
-% factorization of the fraction 7227/100 which is the
-% points/inches conversion factor.
- \ifdim\tempdima<.01\maxdimen
- \multiply\tempdima 100 \divide\tempdima 7227
- \else
- \ifdim\tempdima<.1\maxdimen
- \multiply\tempdima 10 \divide\tempdima 11
- \multiply\tempdima 10 \divide\tempdima 657
- \else
- \divide\tempdima 9 \multiply\tempdima 5
- \divide\tempdima 803 \multiply\tempdima 20
- \fi
- \fi
- \tempdim=\ifdim\tempdim<\zdim -\fi \tempdima
- \edef#3{%
- \csname cnvunits#1\expandafter\endcsname\the\tempdim}%
-}
-
-% Function \roundup for rounding upward. #1 must be a dimension
-% register. If it holds a negative value it will be rounded
-% `outward' away from zero rather than `upward' toward zero. #3
-% is a TeX units string such as "pt" or "in". If #2 = 0 then
-% this will round up to the nearest tenth; if #2 = 00, nearest
-% hundredth; and so forth (up to 5 zeros). If #2 is empty then
-% full accuracy up to TeX's limits will be used.
-%
-% The rounded result will be returned in the dimension register
-% #1.
-
-\def\roundup#1#2#3{%
- \if .#2.\else
- \begingroup
- \ifdim#1>\zdim
- \advance#1-\maxdimen \advance#1.#25#3\relax
- \fi
- \ifdim#1<\zdim
- \endgroup
- \advance#1.#25#3
- \else
- \endgroup
- \fi
- \fi
-}
-
-\begingroup
-\catcode`\P=12 \catcode`\T=12
-\lowercase{%
-\expandafter\gdef\csname cnvunits\endcsname#1PT{#1}
-\expandafter\gdef\csname cnvunits0\endcsname#1.#2PT{%
- #1.\takeone#20\takeone}
-\expandafter\gdef\csname cnvunits00\endcsname#1.#2PT{%
- #1.\taketwo#200\taketwo}
-\expandafter\gdef\csname cnvunits000\endcsname#1.#2PT{%
- #1.\takethree#2000\takethree}
-\expandafter\gdef\csname cnvunits0000\endcsname#1.#2PT{%
- #1.\takefour#20000\takefour}
-\expandafter\gdef\csname cnvunits00000\endcsname#1.#2PT{%
- #1.\takefive#200000\takefive}
-}%
-\endgroup
-
-\def\takeone#1#2\takeone{#1}
-\def\taketwo#1#2#3\taketwo{#1#2}
-\def\takethree#1#2#3#4\takethree{#1#2#3}
-\def\takefour#1#2#3#4#5\takefour{#1#2#3#4}
-\def\takefive#1#2#3#4#5#6\takefive{#1#2#3#4#5}
-
-\def\showinches#1{\inches{00}{#1}\converted
- \immediate\write16{%
- #1 = (after conversion) \converted\space inches}}
-
-\showinches{0in} \showinches{1in} \showinches{2.0in}
-\showinches{2.2in} \showinches{8.5in} \showinches{1pc}
-\showinches{6pc} \showinches{1cm} \showinches{1mm}
-\showinches{1bp} \showinches{72bp} \showinches{1cc}
-\showinches{1dd} \showinches{72dd} \showinches{5000pt}
-\showinches{-5000pt} \showinches{\maxdimen}
-\showinches{-\maxdimen} \showinches{.999\maxdimen}
-\showinches{1pt} \showinches{.01pt}
-
-\endinput
-
-% From the TeX log:
-
-0in = (after conversion) 0.00 inches
-1in = (after conversion) 1.00 inches
-2.0in = (after conversion) 2.00 inches
-2.2in = (after conversion) 2.20 inches
-8.5in = (after conversion) 8.50 inches
-1pc = (after conversion) 0.17 inches
-6pc = (after conversion) 1.00 inches
-1cm = (after conversion) 0.39 inches
-1mm = (after conversion) 0.04 inches
-1bp = (after conversion) 0.01 inches
-72bp = (after conversion) 1.00 inches
-1cc = (after conversion) 0.18 inches
-1dd = (after conversion) 0.01 inches
-72dd = (after conversion) 1.07 inches
-5000pt = (after conversion) 69.18 inches
--5000pt = (after conversion) -69.18 inches
-\maxdimen = (after conversion) 226.70 inches
--\maxdimen = (after conversion) -226.70 inches
-.999\maxdimen = (after conversion) 226.48 inches
-1pt = (after conversion) 0.01 inches
-.01pt = (after conversion) 0.00 inches
diff --git a/Master/texmf-dist/doc/latex/dialogl/codialog.dvi b/Master/texmf-dist/doc/latex/dialogl/codialog.dvi
deleted file mode 100644
index 67f86d31fff..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/codialog.dvi
+++ /dev/null
Binary files differ
diff --git a/Master/texmf-dist/doc/latex/dialogl/codialog.tex b/Master/texmf-dist/doc/latex/dialogl/codialog.tex
deleted file mode 100644
index 75d144f20d9..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/codialog.tex
+++ /dev/null
@@ -1,2461 +0,0 @@
-%%% ====================================================================
-%%% @LaTeX-file{
-%%% filename = "codialog.tex",
-%%% version = "1.1a",
-%%% date = "2-Dec-1994",
-%%% time = "15:24:21 EST",
-%%% checksum = "06649 2461 14834 104289",
-%%% author = "Michael Downes",
-%%% address = "49 Weeks Street
-%%% North Smithfield, RI 02986, USA",
-%%% email = "mjd@math.ams.org (Internet)",
-%%% docstring = "The checksum field above contains: CRC-16
-%%% checksum, number of lines, number of words, and number of
-%%% characters, as produced by Robert Solovay's checksum utility.",
-%%% }
-%%% ====================================================================
-\documentstyle[dialogl%
-,draft%
-]{article}
-
-\title{Carrying on Dialog with \TeX}
-\author{Michael J. Downes\\
-49 Weeks Street\\
-North Smithfield, RI 02895\\
-E-mail: {\tt mjd@math.ams.org}}
-\date{November 1994}
-
-\hyphenation{ams-tex back-slash-char base-line-skip circle circlew
- cnv-units con-trol-seq end-line-char err-help err-mes-sage
- error-con-text-lines escape-char Hel-vet-ica hyphen-char
- hyphen-pen-alty include-only lcircle lcirclew new-line-char
- open-out par-fill-skip report-math-code show-box-depth show-prog-ress
- show-hyphens tables}
-\allowtthyphens
-
-\typeout{}
-\typeout{%
---- This document can be printed in landscape or portrait orientation;}
-\typeout{%
---- landscape is recommended for better presentation of the examples.}
-\typein[\answer]{%
---- If you need portrait, enter P; otherwise, just press <return> now:}
-
-\def\p{p}\def\P{P}
-\ifx\p\answer \let\answer=\P\fi
-\ifx\P\answer
- \portraitlayout
-\else
- \defaultlayout % defined in dialogl.sty
-\fi
-
-\begin{document}
-
-\maketitle
-\thispagestyle{empty}
-
-\tableofcontents
-
-% If we don't have at least half of the current column open, go to
-% the next page.
-\reqspace{.5\textheight}
-
-\section{Introduction}
-
-A common task in any programming language is to send a question to the
-user, and to read (and act on) the user's response. In \tex/, this
-usually involves the \cw{read}, \cw{message}, and \cw{write} commands.
-The use of these commands, however, is beset at every turn by odd
-hindrances and technical stumbling blocks, so that even experienced
-macro writers, faced with an application that requires a bit of
-dialog, usually find it troublesome to make that bit of dialog
-good-looking, reliable, convenient for the user, and tolerant of
-typical human mistakes such as minor mistyping in a response. The
-purpose of this article is to analyze the capabilities that \tex/ has
-for dialog and survey all the best relevant macro-writing techniques
-that fall within the scope of my experience and research.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{This is an overhauled and amplified version of my paper
-``Dialog with \tex/'' in {\sl TUGboat}, vol~12 no~3, Part 2, December
-1991 (proceedings of the 1991 TUG conference in Dedham,
-Massachusetts).}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-In \texbook/, near the end of Chapter 20, Knuth writes
- \begin{quote} It's easy to have dialogs with the user, by using
- \cw{read} together with the \cw{message} command
- \end{quote}
-and there follows a brief example involving reading the user's name
-into a macro \verb"\myname". It's clear from this passage that Knuth
-means, by \term{dialog}, ordinary communication between computer programs
-and users at the early-1980s level of technology: printing
-character-based information on a video screen, displaying menus, asking
-questions, and handling user responses. (Speech recognition and voice
-synthesis are not part of the picture for most \tex/ users, yet.) For the
-purposes of this article, I define \term{dialog} as any communication
-between \tex/ and the user that takes place while \tex/ is running.
-Forms of communication that do not take place while \tex/ is running
-are excluded: for example, the black box that \tex/ prints to indicate
-an overfull line in a paragraph is useful information, but not dialog
-because the communication occurs after \tex/ has stopped running.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{This distinction is blurring, however, with
-the advent of software like Blue Sky Research's Lightning Textures.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-On the other hand, the {\tt Overfull \string\hbox} message
-printed on screen whenever \tex/ adds a black box to the
-current paragraph {\em is} dialog, because it does occur while \tex/ is
-running.
-
-Since the entire section of \texbook/ where Knuth's dialog example appears
-is marked off with double dangerous bend signs, it seems that Knuth
-didn't intend his words ``It's easy'' to be taken completely
-literally---particularly when we look at the next thing in that
-section, Exercise 20.18, which reads,
- \begin{quote}
- The \cw{myname} example just given doesn't work quite right, because the
- $\langle$return$\rangle$ at the end of the line gets translated
- into a space. Figure out how to fix that glitch.
- \end{quote}
-That line-ending space is only one of a number of complications that
-can hamper the efforts of macro writers to write dialog for practical
-applications. In fact, the word {\em easy} is far from the first
-adjective that comes to mind when I remember my own early attempts at
-writing dialogical macros. Though my thrashing and floundering for
-the most part took place behind the scenes, invisible to others, it
-eventually reached the point of threatening my secret belief that I
-was a hot-shot macro writer. That spurred me to start paying special
-attention to anything related to the idea of dialog in \tex/, and
-accumulating scraps and pieces of assorted useful techniques. This
-article is more or less a survey of what I've learned so far.
-Sections \ref{s:messages} and~\ref{s:receiving} review the functions
-\tex/ provides to support dialog; sections~\ref{s:stumblewrite}
-and~\ref{s:stumbleread} discuss common difficulties and how to handle
-them.
-
-\subsection{Terminology}
-Rather than assume all readers know well enough the meaning of terms
-like \term{primitive}, \term{token}, or \term{control word} that will
-be bandied about hereinafter, I offer a quick review of some standard
-\tex/ terminology, to aid those who want it, and to be skipped by the
-rest of you.
-
-A \tex/ command is either a \term{control sequence}---a string of
-characters starting with an \term{escape character}---or a single
-\term{active character}, such as \verb|~|. The usual escape character
-is the \term{backslash}, \verb|\|. A control sequence that consists of
-a backslash plus one nonletter character is called a \term{control
-symbol}; a control sequence that consists of a backslash plus one or
-more letters is called a \term{control word}. Spaces are ignored after
-a control word, but not after a control symbol. A control sequence is
-either a \term{\tex/ primitive}---a command built into the \tex/
-program---or a macro: a composition of primitives or other macros,
-defined by the user or by a \term{macro package} such as \latex/ or
-\plaintex/. A control sequence may require one or more following
-\term{arguments}; an argument is a piece of text that is grabbed up by
-the control sequence in order to do something with it. Arguments
-typically are enclosed in \term{curly braces} \verb|{| and \verb|}|.
-For example, the command \cw{sqrt} is a macro with one argument, and
-is used thus: \verb|\sqrt{x^2+y^2}|, producing the printed output
-$\sqrt{x^2+y^2}$.
-
-Macros are \term{expandable}; some primitives are
-expandable, more are not. An expandable control
-sequence will be replaced by its expansion if it is used inside the
-argument of a \cw{message} command, or anywhere else where \tex/ is
-in an expansive mood (\cw{write}, \cw{errmessage}, \cw{edef},
-\cw{xdef}, \cw{mark}, \cw{special} [\texbook/, p216]).
-
-The term \term{parameter} is used to mean a numeric or dimensional
-variable such as \cw{hyphenpenalty}, \cw{hsize}, or \cw{baselineskip}. A
-\term{token} is eithera character (with associated catcode) or a control
-sequence, {\em after\/} it has been read by \tex/ from some file and
-entered into \tex/'s active memory. Character tokens can only have
-category codes 1--4, 6--8, or 10--13; there's no such thing as a
-`character token' with category code 0, 5, 9, 14, or 15: those catcodes
-only control the process of creating tokens, they aren't designed for
-permanent association to a token.
-
-Under normal circumstances, each line in a file is understood by
-\tex/ to have a \ctrl{M} character, {\sc ascii} 13, at the end of it,
-even if your text editor actually puts some other character, or
-no character, at the end of a line when you press the \return/ or
-{\sc enter} key.
-
-\subsection{Basic dialog principles}
-It's not hard to identify a number of principles that make for good
-dialog:
-\begin{enumerate}
-\item When asked a yes/no question, users should
-be able to enter \verb|y|, \verb|yes|, or even \verb|ye|,
-in lowercase, uppercase, or even mixed case, and have the
-answer understood to be ``yes''.
-
-\item For any menu or question, a default answer
-should be provided (when this makes sense), and the default
-answer should be made as easy as possible to select.
-
-\item Users' answers should be repeated back to them,
-to allow them to verify that the program's impression
-of the answer entered by the user is indeed correct.
-
-\item Users should be given a chance to undo mistakes,
-\eg., by going back to a specified point earlier in the
-dialog and starting over from there. For example, it shouldn't be necessary to
-stop \tex/ and restart just to fix a typing error.
-
-\item When practical, users' answers should be checked to make sure
-they're not nonsense; for example, if a program requests an integer,
-it should check the response to make sure the user didn't enter
-something else entirely, rather than assume an integer was entered and
-start to perform operations on it. In \tex/ this would create a risk
-of losing control to low-level errors such as
-{\tt Missing number, treated as~0} or {\tt Arithmetic overflow}.
-
-\item Information given to users should be provided in the ``best
-possible form'', where the meaning of ``best possible'' must be
-determined by common sense from the circumstances of a particular
-application and the targeted user group. For example, a
-straightforward use of the \cw{the} command to report the value of a
-\tex/ dimension parameter such as \cw{vsize} to the user will produce
-the value in points, down to five or six decimal places. It will
-normally be more useful to report the value rounded to the nearest
-whole point, or to report it in picas, inches, or
-centimeters---whatever is most convenient for the user. A
-typographical designer or compositor would probably prefer picas,
-while someone with little knowledge of typography would probably
-prefer inches or centimeters.
-
-\end{enumerate}
-
-\section{\tex/'s Message-Sending Capabilities}
-\label{s:messages}
-
-Table~\ref{t:sending} lists the various means in \tex/ for sending
-messages to the user.
-
-\begin{table*}
-\vspace{-\medskipamount} % needed because \caption has wrong spacing
- % when used at the top rather than the bottom
- % of a float environment.
-\caption[]{\label{t:sending}Commands that can be used for
-sending messages}
-\writepage{Table}
-\vskip1pc
-\def\hline{\noalign{\vskip3pt\hrule\vskip2pt\relax}}
-\tabskip0pt
-\halign to\hsize{#\hfil\tabskip1em plus.2\hsize minus0.7em&
- #\hfil& \parbox[t]{.6\hsize}{\rightskip0pt plus2em\relax#}\cr
-\hline
-Command& Example& Result\cr
-\hline
-\cw{message}& \verb'\message{Hey you}'& {\tt ... Hey you ...}\cr
-\hline
-\cw{write}& \verb'\immediate\write{Hey you}'& {\tt ...\newline
-Hey you\newline
-...}\cr
-\hline
-\cw{errmessage}& \verb'\errmessage{Hey you}'&
-{\tt !\ Hey you.\newline
-l.217 \string\errmessage\string{Hey you\string}}\cr
-\hline
-\cw{show}& \verb'\show\footnote'&
-{\tt> \string\footnote=macro:\newline
-->\string\@ifnextchar\space [\string{\string\@xfootnote\space
-\string} ...\newline
-l.218 \string\show\string\footnote}\cr
-\hline
-\cw{showthe}& \verb'\showthe\textwidth'&
-{\tt> 570.93257pt.\newline
-l.219 \string\showthe\string\textwidth}\cr
-\hline
-\cw{showbox}& \verb'\showbox 0'&
-{\tt> \string\box0=\newline
-\string\hbox(0.0+0.0)x15.0\newline
-\null\newline
-!\ OK.\newline
-l.220 \string\showbox 0}\cr
-\hline
-\cw{showlists}& \verb'\showlists'&
-\tt
-\string#\string#\string# vertical mode entered at line 0\newline
-\string#\string#\string# current page:\newline
-\string\glue(\string\topskip) 3.75\newline
-...\newline
-total height 403.47491 plus 14.64996 minus~8.77498\newline
- goal height 751.60756\newline
-prevdepth 0.0, prevgraf 2 lines\newline
-\null\newline
-! OK.\newline
-l.221 \string\showlists\cr
-\hline
-\crcr}
-\end{table*}
-
-Although it could be argued that the token register \cw{errhelp} is
-another way of sending a message, it is excluded from
-Table~\ref{t:sending} on the grounds that it is passive rather than
-active, unlike the other commands listed. To put it another way,
-\cw{errhelp} is merely a storage area associated with \cw{errmessage},
-where auxiliary text can be placed; the user won't ever see
-\cw{errhelp} except by way of \cw{errmessage}.
-
-\subsection{The \cw{message} primitive}\label{ss:message}
-
-The \cw{message} command is a \tex/ primitive that prints its argument
-on screen. If the current screen position is not at the beginning of
-a line, \tex/ will add a blank space at the beginning of the message
-text to separate it from the preceding material---except that if there
-isn't enough room on the current line to fit the entire message text,
-then \tex/ will go to the next line before starting to print the
-message, and not add an extra blank at the beginning. The maximum
-length of message lines is controlled by the constant {\it
-max\underscore print\underscore line}, which is compiled into \tex/;
-the normal value is 79. (In a windowing environment the width of the
-current window may also affect the maximum length of message lines.)
-
-Thus one way to force a message to start on a new line is to add lots
-of \cw{space}'s at the end. But a better way to start a message on a
-new line, or break up a long message into lines, is to indicate line
-breaks with the current \cw{newlinechar} character. For example,
-we can set the newline character to be \verb|+| and use it in
-a message as follows:
-\def\next{\begin{verbatim}\string\begingroup{ }\string\newlinechar=`+%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{Use of \cw{+} instead of {\tt+} here would normally be
-recommended but the outerness of \cw{+} in \plaintex/ makes this an
-exception.}%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\endgraf}%
-\next
-\message{+This is a+three-line+message ...}
-\endgroup
-\end{verbatim}
- which produces on screen (regardless of the length of any immediately
-preceding message)
-\begin{verbatim}
-This is a
-three-line
-message ...
-\end{verbatim}
- In any one message, a given character
-can either produce newlines, or represent itself, but not both.
-As a consequence, if we wanted a plus character in a message
-to actually print on screen instead of causing a line break,
-we would have to set \cw{newlinechar} to some other value
-before sending the message. From this knowledge it's a short step
-to the insight that for general message-sending purposes it would
-be convenient to set \cw{newlinechar} to the character that
-is least likely to be needed in a message text. The nonprinting
-ASCII characters in the range 0--31 are obvious candidates.
-
-But here we encounter an inconvenient idiosyncrasy of \tex/: A control
-character---such as control-J, or \verb|^^J| (using \tex/'s double
-caret notation), which is the default value for \cw{newlinechar} in
-\amstex/ and \latex/---doesn't ever produce line breaks
-in a \cw{message}, even if it is currently selected as
-\cw{newlinechar}.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{Or rather, it didn't up until version 3.141 or so of \tex/.
-See also the mention of em\tex/'s {\tt/r} option (which allows you to
-use control characters for output purposes) in \secref{ss:8bit}.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-Instead, it will always be printed as three characters using the
-double caret convention.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{This suggests the following experiment: set
-\cw{newlinechar=`\string\^} and send a \cw{message} containing a
-\ctrl{J} character.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-Therefore, if you want to use \cw{message} as your normal
-message-sending function, you should choose one of the seldom-used
-printable characters as your default \cw{newlinechar}. One possibility
-would be to use the double quote character for this purpose, since
-single quote characters can normally be substituted
-for double quote characters in message texts. \fn{Testfont.tex}
-\cite{testfont} uses the {\tt @} character.
-
-Unlike \cw{message}, however, the \cw{write} command is capable of
-using a control character as a newline character (see
-\S\ref{ss:write}). By using \cw{write} for multiline messages, and
-making \verb|^^J| the default newline character, \amstex/ and
-\latex/ avoid taking any of the printable characters out of
-circulation for dialog purposes.
-
-If no line breaks are indicated in a \cw{message} that is longer than
-{\it max\underscore print\underscore line}, \tex/ will introduce
-arbitrary breaks at the screen column equal to {\it max\underscore
-print\underscore line}, which usually means
- \[\settowidth{\dimen0}{\tt random brea}
-\parbox{\dimen0}{\tt
-random brea\\
-ks in the m\\
-iddle of wo\\
-rds.}\]
-Those of you who use \cw{tracingmacros} will have noticed that its
-output also has line breaks like this. Which can make it rather
-difficult to search for instances of a given string in the trace log;
-to find all instances of {\tt xyz} you need a regular expression
-something like
-\begin{verbatim}
-x\n?y\n?z
-\end{verbatim}
-(\verb'\n' meaning `newline', {\tt?\@} meaning 0 or 1 occurrences of
-the preceding subpattern).
-
-\subsection{The \cw{write} primitive}
-\label{ss:write}
-The \cw{write} command, like \cw{message}, just prints a message. But
-the message doesn't necessarily appear on screen, because
-communication with the user is not the purpose for which
-\cw{write} was originally designed: Its initial purpose was to send index or
-table of contents information, including the associated page number,
-to an auxiliary file for later processing. Because this kind of use is
-closely linked to page numbering, \cw{write} commands on the current
-page are normally saved up to be executed when the page is actually
-shipped out, after the page break has been determined. If such
-postponement is not wanted, \cw{write} must be used with the
-\cw{immediate} prefix.
-
-In order to allow intersequential writing to different output files,
-the \cw{write} command takes an extra first argument, a number
-between $-1$ and $16$ inclusive, to indicate the output file to which
-the text should be sent. Output files 0--15 can be associated with a
-particular file on your system by the \cw{openout} command; output
-file $-1$ is the \tex/ log file, and output file $16$ is the user's
-terminal screen (echoed in the log file as well).
-
-Line breaks in the argument of a \cw{write} command can be obtained by
-inserting \cw{newlinechar} characters; unlike \cw{message}
-(\secref{ss:message}) and \cw{errmessage} (\secref{ss:errmessage}),
-\cw{write} will always start a new line for each newline character,
-even when it is a control character such as \verb|^^J|. Also, the text
-of a \cw{write} command always starts on a new line and finishes on a
-new line. The existence of the final newline may be observed in the
-on-screen result of a \cw{message} following a \cw{write}: the message
-text will always start on the next line regardless of the total length
-of the \cw{message} and \cw{write} texts, whereas a \cw{message}
-following another \cw{message} or one of \tex/'s internally generated
-messages (such as input file names) will not start on a new line
-unless there isn't enough room remaining on the current line.
-
-Corollary: If you prompt the user for some input and you want the
-user's input to appear on the same line as the prompt text, use
-\cw{message} instead of \cw{write} to send the prompt text---or at
-least the last line of the prompt text.
-
-\subsubsection{Nonimmediate \cw{write} messages}
-Sometimes it's useful to leave off
-the \cw{immediate} prefix of a \cw{write} command
-even when not writing information to an index file or
-table of contents file: For instance, if you are working on page breaks in
-a long document and want to find out, without previewing or printing,
-if a nonforcing pagebreak command had the effect that you wanted, you
-could insert a nonimmediate \cw{write16} just before and just after the
-intended page break:
- \begin{verbatim}
-\write16{Before the attempted pagebreak.}
-\penalty-9999
-\write16{After the attempted pagebreak.}
-\end{verbatim}
- The message from a nonimmediate \cw{write16} will appear before the
-closing \verb|]| of the \verb|[|\thinspace\nobreak\verb|]| pair that enclose the relevant
-page number. So if all went well, one of the above messages will
-appear with one page number and the next message with the
-next page number, like this:
- \begin{verbatim}
-[4] [5
-Before the attempted pagebreak.
-] [6
-After the attempted pagebreak.
-] [7] [8] [9] ...
-\end{verbatim}
-
-In producing this article (using \latex/) I had some trouble getting
-good placement for the floating tables and examples; to help me
-experiment, I added some code that would print on screen the page
-numbers. At the beginning of Example~2 (for example) there is
-a line that says
-\begin{verbatim}
-\write16{Example 2: Page \thepage}%
-\end{verbatim}
-The \cw{immediate} prefix must be omitted in order to
-get the page number correct.
-
-\subsection{The \cw{errmessage} primitive}
-\label{ss:errmessage}
-The \cw{errmessage} command prints its argument on screen, starting on a
-new line, with an exclamation point and a space added at the beginning,
-and a period added at the end. For example,
-\cw{errmessage}\verb|{Surprise}| produces
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{verbatim}
-! Surprise.
-\end{verbatim}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- on screen. \cw{errmessage} also shows the {\em current context},
-which means the current line from the current input file, along with
-the line number, and additional information if there is any (such as
-the surrounding parts of current macro expansions).%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{If the parameter \cw{errorcontextlines} is set high enough.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-So the {\tt Surprise} error message would show additional information
-on screen. Suppose we define
-\begin{verbatim}
-\def\test{\errmessage{Surprise}\relax}
-\end{verbatim}
-Then the additional information will look something like:
-\begin{verbatim}
-! Surprise.
-\test ->\errmessage {Surprise}
- \relax
-l.454 \test
- and some more text.
-?
-\end{verbatim}
-This example may be interpreted as follows: Line 454 of the current
-file consists of
-\begin{verbatim}
-\test and some more text.
-\end{verbatim}
-The line break in the context listing
-means that \tex/ is processing \cw{test} and has not yet
-started to typeset the word `\verb"and"'.
-Above the \verb"l.454", the expansion
-of \cw{test} is shown. The line break after \verb"{Surprise}"
-indicates that \tex/ has not yet executed the \cw{relax} command.
-
- The behavior of \cw{errmessage} with respect to newline characters
-and control characters is the same as for \cw{message}---i.e.,
-\cw{errmessage} will start a new line for each \cw{newlinechar} in
-its argument [unless the current value of
-\cw{newlinechar} is outside the visible {\sc ascii} range
-32--126 and the version of \tex/ is less than 3.141].
-
-At the end of an error message, the user is presented with
-a question-mark prompt, and a choice of several possible responses. These
-will be discussed later in the section on \tex/'s capabilities
-for receiving user input (\S\ref{s:error-recov}).
-
-\subsection{The \cw{show} and \cw{showthe} primitives}
-
-The \cw{show} command, used for showing the current meaning of a
-control sequence (or indeed of any token), is rather similar to
-the \cw{errmessage} command in what it produces on screen. The
-prefix is a greater-than character instead of an exclamation
-point. Here's the result of \verb|\newcount\C| \verb|\show\C|:
- \begin{verbatim}
-> \C=\count78.
-l.1 \newcount\C \show\C
-
-?
-\end{verbatim}
- As with \cw{errmessage}, \tex/ displays the surrounding context of a
-\cw{show} command; it also offers the same question-mark
-prompt with the same range of possible responses (well, almost---the
-\verb|H| option only gives a generic help message about \cw{show}, not
-specific help about the item being shown.).
-
-The \cw{showthe} command is like \cw{show}, but is applied
-to certain kinds of things such as count registers and
-token registers, that have not only a meaning but also a current value.
-For instance, here's the result of \verb|\C=5| \verb|\showthe\C|, using the
-counter defined above:
- \begin{verbatim}
-> 5.
-l.3 \C=5 \showthe\C
-
-?
-\end{verbatim}
-
-\subsection{The \cw{showbox} and \cw{showlists} primitives} The
-commands \cw{showbox} and \cw{showlists} are similar to \cw{show} in
-what they produce on screen (see Table~\ref{t:sending}). Because of
-their specialized nature they don't ordinarily have much application
-in dialog between \tex/ and the user.
-
-\subsection{Piggybacking}
-Many messages printed on screen by \tex/ do not
-involve any of the commands listed in Table~\ref{t:sending}.
-These other messages
-are emitted directly by \tex/, outside the control of
-the macro writer. However, with a little imagination,
-you can often find ways to attach useful information
-to those ``inaccessible'' messages. This is what I mean
-by \term{piggybacking}.
-
-For example, whenever \tex/ inputs a file, a message is printed on
-screen containing the name of the file, enclosed in parentheses. So
-one way to send a short message would be to create an empty file
-whose name was equal to the desired message, and then input the file.
-
-File name messages, apart from the parentheses, behave the same as
-messages produced by the \cw{message} command: in particular, a file name
-message will be appended to the current line, with
-a preceding space, unless the length of the
-message (including the two parentheses) will cause it
-to cross the {\it max\underscore print\underscore line} boundary.
-
-If your computer system allows longer file names
-you could actually get pretty fancy with a filename message.
-For example, on a Unix system suppose you have a file named
-\fn{test.tex} whose contents are
-\begin{verbatim}
-\newwrite\msgfile
-\immediate\openout\msgfile=Fred.your.fly.is.open
-\immediate\write\msgfile{\relax}
-\immediate\closeout\msgfile
-\input Fred.your.fly.is.open
-\end
-\end{verbatim}
-When \fn{test.tex} is processed by \tex/ the screen output will be
-something like:
-\begin{verbatim}
-This is TeX, C Version 3.1 (format=plain 91.1.4) ...
-(test.tex (Fred.your.fly.is.open) )
-No pages of output.
-\end{verbatim}
-However, getting spaces in the message would be problematic since
-\tex/ treats a space as a file name terminator. And if your message
-doesn't include a period, \tex/ is likely to add \fn{.tex} at the end
-of the file name when \cw{openout} is invoked. Not to mention that
-this method would quickly lead to inconvenient file clutter since
-\tex/ can't delete files, only create new files or change the contents
-of pre-existing ones.
-
-Or consider the count registers 1--9; if any of
-these is nonzero, its value is reported on screen whenever \tex/
-ships out a page. One way of using this feature might be to report
-the accumulation of index terms for a document, by having each index command
-increment count register number~1:
-\begin{verbatim}
-\countdef\indexcount=1
-\def\index{...
- \global\advance\indexcount 1 ...}
-\end{verbatim}
-Incrementing count~1 like that would result in \tex/ displaying on
-screen something like
-\begin{verbatim}
-[1.2] [2.7] [3.14] [4.15] [5.27] [6.38] ...
-\end{verbatim}
-instead of the more usual
-\begin{verbatim}
-[1] [2] [3] [4] [5] [6] ...
-\end{verbatim}
-as each page is shipped out.
-
-These two examples don't seem extremely practical---the total number of
-index terms reported in the latter example won't necessarily be correct
-page for page, until the end of the document, because ordinary means
-for incrementing the counter are immediate in their effect rather than
-synchronized with the \cw{write} commands used for creating the index
-file---but the point is to realize that the messages coming out of
-\tex/'s innards aren't totally beyond reach, and they can sometimes
-provide a better way of achieving a given result than ordinary methods.
-A couple of better-known examples, from the hands of Donald E. Knuth, can
-be found in the \cw{showhyphens} command and in {\tt hyphen.tex} at the
-point where \cw{patterns} is called.
-
-\subsubsection{The \cw{showhyphens} command}
-The \cw{showhyphens} command (defined in {\tt plain.tex})
-works by exploiting \tex/'s messages about underfull boxes.
-When an underfull line
-of a paragraph is reported, \tex/ prints on screen the elements of that
-line, including any discretionary hyphens inserted by \tex/
-while attempting to find good line breaks.
-The key insight for thinking up the \cw{showhyphens}
-command is to realize that if you can typeset a one-line
-paragraph, and make sure that the line is underfull, then
-any word in that line will have its hyphenation points
-displayed on screen. That's exactly what Knuth
-defined \cw{showhyphens} to do:
-\begin{verbatim}
-\def\showhyphens#1{\setbox0\vbox{\parfillskip\z@skip
- \hsize\maxdimen \tenrm \pretolerance\m@ne \tolerance\m@ne
- \hbadness0\showboxdepth0\ #1}}
-\end{verbatim}
-The settings of \cw{parfillskip} and \cw{hsize} ensure that the paragraph will
-be all on one line, and underfull. (For extra bullet-proofing,
-\begin{verbatim}
- \leftskip\z@skip \rightskip\z@skip
-\end{verbatim}
-should probably be included too.)
-
-The switch to font \cw{tenrm} makes sure---or at least reasonably
-sure---that the current font is not one for which hyphenation has been
-inhibited by setting \cw{hyphenchar} to an out-of-range value. The
-settings of \cw{pretolerance} and \cw{tolerance} ensure that
-hyphenation points will be added (in making up a paragraph, \tex/
-normally tries first to get by without adding hyphenation points, if
-it can find good line breaks using only the stretchability and
-shrinkability of interword glue). The setting of \cw{hbadness} ensures
-that an {\tt Underfull \string\hbox} message will be sent (otherwise,
-if the surrounding environment had $\hbox{\cw{hbadness}}=10000$ when
-\cw{showhyphens} was called, the message would be suppressed).
-The setting of \cw{showboxdepth} limits the information in the
-message to top level; otherwise compound structures like accented
-letters or special composites (\eg. \cw{AA}) would be shown in
-full detail---more detail than the user normally wants to see.
-And finally the \verb*+\ + command forces entry into horizontal mode
-and, more importantly, provides a glue item before the first word,
-without which it would not be hyphenated (see the rules by which
-\tex/ looks for hyphenatable words, \texbook/, Appendix~H).
-
-Note that the values of \cw{language}, \cw{lefthyphenmin}, and
-\cw{righthyphenmin} are inherited from context; and this is probably
-what you want for the \cw{showhyphens} command (perhaps indeed the
-current font should also be inherited from context instead of being set
-always to \cw{tenrm}).
-
-\subsubsection{Using error context to send messages}
-\label{ss:errcontextcomments}
-The standard \fn{hyphen.tex} containing U.S. English hyphenation
-patterns has a comment after the \cw{patterns} command:%
- \begin{verbatim}
-\patterns{ % just type <return> if you're not using INITEX
-\end{verbatim}
- Ordinarily the macro writer can't use comments to communicate
-with the user, because comments within the text of a macro
-are discarded by \tex/
-as the macro is defined. The beauty of the comment in \fn{hyphen.tex}
-is that it appears precisely when needed, because of the
-way \tex/ displays context with error messages: if you \cw{input}
-\fn{hyphen.tex} when not using {\sc initex}, \tex/ will give an
-error message when it encounters the \cw{patterns} command,
-and as usual, will show the context around the point of the
-error, like this:
-\par\reqspace{3\baselineskip}
- \begin{verbatim}
-! Patterns can be loaded only by INITEX.
-l.2 \patterns
- { % just type <return> if you're not using INITEX
-?
-\end{verbatim}
-Since learning this technique, I've had occasion more than once to
-apply it in similar situations. One such application had to do with
-the \latex/ circle fonts. I had an assignment to create a
-\latex/ documentstyle whose installation procedures involved
-rebuilding the \latex/ format file, which meant calling
-for the \fn{.tfm} files of the circle fonts.
-However, there was at that time (1990--1991) a bit of
-confusion surrounding the names; the trend among distributors of \tex/
-appears to be away from the original names \fn{circle10}
-and \fn{circlew10} and toward the names
-\fn{lcircle10} and \fn{lcirclew10}.
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%\footnote{Starting with the standard Unix distribution of \tex/,
-%from the University of Washington.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-The \fn{.tfm} files are the same under either names, but
-I had to deal with the possibility that some users of the
-documentstyle I was working on would have the fonts under the older
-names, while others would have them under the new names.
-
-My solution was to use the newer names \fn{lcircle10} and \fn{lcirclew10}
-and put comments on the same lines as the font assignments, so that
-the comments would appear to the user if \tex/ were unable
-to find the \fn{.tfm} files and emitted an error message.
- \begin{verbatim}
-\font\tencirc=
-lcircle10\relax% Type x to exit; see sei.prl for further info.
-\end{verbatim}
-Additional comments in the file \fn{sei.prl} explained
-how to change the font names to their older variants.
-The \cw{relax} is necessary so that \tex/ won't proceed to
-the next line, bypassing the comment, in the process of looking
-for a modifier such as \verb|scaled| or \verb|at|.
-And the reason for the line break after the equals sign is to fit a
-few more characters in the comment, which would be elided by \tex/
-if too long.
-\section{Ways for \tex/ to receive messages from the user}
-\label{s:receiving}
-
-Table~\ref{t:receiving} lists the various means in \tex/ for reading
-input from the user. The primary input facility is the \cw{read}
-command; the others are special cases applicable only under limited
-circumstances.
-
-\begin{table}
-\vspace{-\medskipamount} % needed because \caption has wrong spacing
- % when used at the top rather than the bottom
- % of a float environment.
-\caption[]{\label{t:receiving}Receiving}
-\writepage{Table}
-\vspace{-\medskipamount}
-\begin{center}
-\begin{tabular}[t]{p{.35\columnwidth}|p{.55\columnwidth}}
-\hline
-Method & Prompt displayed by \tex/\\
-\hline
-\cw{read}& \cw{controlseq=}\\[3pt]
-\rp error message interaction& \verb|?|\\[3pt]
-\rp `show' message interaction& \verb|?|\\[3pt]
-\rp input file not found&
-\tt\rp Please type another input file name:\\[3pt]
-\rp output file not writable&
-\tt\rp Please type another output file name:\\[3pt]
-interrupt key& none
-\end{tabular}
-\end{center}
-\end{table}
-
-The purpose of getting input from the user is essentially always the
-same: to give the user an opportunity to change the outcome of the \tex/
-run, which would otherwise be totally predetermined by the contents of
-the files read by \tex/. (Well, and perhaps by a few system variables
-such as \cw{time}, \cw{day}, etc.)
-
-\subsection{The \cw{read} primitive}\label{ss:readprim}
-The form of the \cw{read} command is
- \begin{verbatim}
-\read 16 to \controlseq
-\end{verbatim}
-where the number 16 is the input stream number,
-which might be any value from $-1$ to 16;
-a number between 0 and 15 would indicate reading from a file
-stored on disk, while 16 and $-1$ indicate reading from the user's
-keyboard. \cw{controlseq} can be any control sequence
-chosen by the macro writer. If the input stream number is
-16, \tex/ will display a prompt of
- \begin{verbatim}
-\controlseq=
-\end{verbatim}
-If the input stream is $-1$, this prompt will be omitted. In either
-case, a \cw{read 16} or \cw{read -1} command should normally be
-preceded by a message that lets the user know what kind of input to
-provide.
-
-The action of the \cw{read} command is similar to that
-of the \cw{def} primitive. Both of them create a new
-macro containing an unexpanded token list, which
-must contain balanced braces. The balancing required
-in the response to a \cw{read} command, however,
-is slightly different than for a \cw{def}; as long
-as there an equal number of opening and closing
-braces, it doesn't matter how they're distributed---\tex/
-will be perfectly happy with the response
- \begin{verbatim}
-a}}}b{{c}{{
-\end{verbatim}
- as can be verified using \cw{show}\cw{answer} after reading the
-above string into \cw{answer}.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{See also \secref{ss:readouter}.
-I questioned the behavior of \cw{read} with respect to extra closing
-braces and outer control sequences in a letter to
-Donald Knuth (December 1991);
-his response was to make a change in \tex/ (version 3.141?)
-that causes a \cw{read} operation to terminate decisively if an extra
-{\tt\char`\}} or outer control sequence is encountered. So backwards
-balancing of braces will no longer be permitted.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\tex/ will read more than one line, if
-necessary, if the first line contains an unmatched brace. This is a
-useful property if you {\em want\/} to read more than one line at a
-time, as is sometimes the case: write the information in the form
-\verb|{| \ldots \verb|}|, and you can have as many lines
-between the curly braces as you want.
-
-\tex/ always reads line by line, rather than character by character;
-unlike some other programming languages, \tex/ provides no way to read a
-single character and act on it immediately; the user must always press
-the \return/ key before anything will happen.
-
-\subsection{Error recovery}\label{s:error-recov}
- As mentioned earlier, after an error message \tex/ presents the user
-with a question-mark prompt. Typing a second question mark in reply
-to the prompt will cause \tex/ to list the options that are
-available:
- \begin{verbatim}
-! Error message.
- ...
-? ?
-Type <return> to proceed, S to scroll future error messages,
-R to run without stopping, Q to run quietly,
-I to insert something, E to edit your file,
-1 or ... or 9 to ignore the next 1 to 9 tokens of input,
-H for help, X to quit.
-?
-\end{verbatim}
- Choosing the {\tt H} option causes \tex/ to print a help message
-containing additional information related to the error message.
-If the error message was generated using \cw{errmessage}, then
-the help message will consist of the current contents of the
-token register \cw{errhelp} (which should be filled with something
-useful by the macro writer, immediately before the call
-to \cw{errmessage}). Otherwise, for a built-in error message,
-the corresponding built-in help message (from \fn{tex.pool}) is
-displayed.
-
-The intended use of the insertion ({\tt I}) and token deletion ({\tt
-1...9}) options is for error recovery; after you look at the context
-of an error, you may be able to temporarily repair the damage and
-continue processing the remainder of the document, by removing some
-tokens and/or inserting others. Then if any other errors are uncovered
-later, they can be fixed at the same time as the first error, instead
-of requiring a second \tex/ run to find them. Example~\ref{e:recovery}
-illustrates this. You can actually delete up to 99 tokens at a time in
-all implementations of \tex/ that I know of, even though the help
-message suggests that 9 is the maximum.
-
-\begin{example}
-\begin{examplebox}%
-%
-\caption[]{Using error interaction possibilities to
-get past a potentially bad error: a missing {\tt\string\\} before an
-\cw{hline} in a \latex/ {\tt tabular} environment.}\label{e:recovery}%
-\writepage{Example}
-
-\begin{verbatim}
-! Misplaced \noalign.
-\hline ->\noalign
- {\ifnum 0=`}\fi \hrule...
-l.120 \hline
-
-?
-\end{verbatim}
-Let's see what the help information is:
-\begin{verbatim}
-? h
-I expect to see \noalign only after the \cr of an alignment.
-Proceed, and I'll ignore this case.
-
-?
-\end{verbatim}
-Let's try skipping one token to verify what \latex/ is going
-to process next:
-\begin{verbatim}
-? 1
-
-\hline ->\noalign {
- \ifnum 0=`}\fi \hrule...
-l.120 \hline
-
-?
-\end{verbatim}
-All right, the opening curly brace has just gone by. We need
-to insert the \verb|\\| that was forgotten, and also replace the two tokens
-\cw{noalign} and \verb|{| that have slipped by.
-\begin{verbatim}
-? i\\ \noalign{
-\end{verbatim}
-And now \latex/ will be able to continue with the rest of the table.
-\end{examplebox}
-\end{example}
-
-The token deletion option can also serve as the basis of a crude menu
-facility. The idea is to use \cw{errmessage} to present a menu with
-choices labeled by numbers. If the user responds by entering, say,
-\verb;3; to choose item~3, then we must arrange things so that after
-\cw{errmessage} does its normal thing of deleting three tokens, the
-following token that was not deleted should do something to ensure
-that item~3 will be selected. This isn't too hard if we use something
-like the following sequence:
-\begin{verbatim}
-\errmessage{...}\0\1\2\3\4\5\6\7 ...\stop
-\end{verbatim}
-Clearly the deletion of three tokens after the error message will leave
-\verb;\3; as the next command to be executed, and so if we define
-\verb;\3; to do the right thing and then skip over the following
-\verb;\4\5...; corresponding to unselected menu choices, we get what we
-want.
-
-If the user just presses \return/ without entering a number, it will
-be \verb;\0; that is executed---therefore \verb|\0| should be defined
-to produce the default selection.
-
-One thing that makes me call this crude is the fact that \tex/ pauses
-after any token deletion operation instead of barging ahead. This means
-that if the user chooses anything other than the default selection,
-they will have to press \return/ twice after typing the number, instead
-of just once.
-
-Some other crudities are introduced by the bits and pieces of an
-\cw{errmessage} that cannot be suppressed. These include:
-\begin{itemize}
-\item Exclamation point and space at the beginning of the error message.
-\item Period at the end of the error message.
-
-\item The expansion of the current macro (if the error message is
- contained in a macro), on two lines with the line break immediately
- after the token that was last processed by \tex/. This includes, at
- the beginning, the macro name followed either by \verb"->", if the
- first part of the expansion text is relatively short, or by ellipsis
- dots \verb"..." plus the tail end of the first part of the expansion
- text.
-
-\item The current line of the current file, on two lines with the break
- immediately after the token that was last processed by \tex/.
-\item The question mark and space prompting the user for a response.
-\end{itemize}
-
-I would have hoped that setting \cw{errorcontextlines} to $0$ or $-1$
-would cause the `innermost' two lines of the error context to be
-suppressed but apparently there is no value for \cw{errorcontextlines}
-that will suppress them. The following example illustrates all of the
-nonsuppressable parts.
-\begin{verbatim}
-! Error.
-\CM ->\errmessage {Error}
- \CM
-l.38 \CM
- % A comment in the file, line 38
-? x
-\end{verbatim}
-Except for the ellipsis dots alternative, that is. Here's how that
-looks:
-\begin{verbatim}
-! Longer message text, forcing elision.
-\CM ...sage {Longer message text, forcing elision}
- \CM
-l.38 \CM
- % A comment in the file, line 38
-?
-\end{verbatim}
-Although the exact number can vary (depending on how your particular
-version of \tex/ is configured at compile time), the maximum
-length of the first line of context is normally between 40 and 50
-characters, and if the expansion text would make the line longer
-than this, it is truncated at the beginning and the ellipsis
-dots are inserted.
-
-Very well then. Since we have \verb"!", \verb".", and \verb"->" or
-\verb"..." in the first two lines (the lines that will be nearest our
-menu text), and we cannot get rid of them, the next best thing is to
-camouflage them. One possibility is setting
-\cw{newlinechar}\verb"=`\!" just before sending the \cw{errmessage},
-so that the \verb"!" character will cause a blank line rather than
-printing on screen, and then putting a bunch of periods in the menu
-text to camouflage the other periods.
-
-\ref{a:menu} exhibits \fn{fontmenu.tex}, a more extensive
-working-out of this idea in which I tried to pound the recalcitrant
-\cw{errmessage} into the most presentable shape possible, using every
-macro hack I could think of.
-
-\subsection{Show message `recovery'}
-
-After a \cw{show}, \cw{showthe}, \cw{showbox}, or \cw{showlists}
-command, \tex/ offers a question-mark prompt, and the same menu of
-options as after an error message. There is only one slight
-difference: The {\tt H} option provides no access to the \cw{errhelp}
-token register; only a generic help message about the \cw{show...}
-commands is available.
-
-\subsection{``Please type another input file name:''}
-
-When you see this prompt, displayed by \tex/ when it's unable to find
-an input file, you have strayed into one of the less friendly byways
-of \tex/. If you can't think up a good file name to give as an answer,
-you could get stuck in an endless loop. Even simply pressing the {\sc
-return} key causes \tex/, on most computer systems, to look for a file
-called `\fn{.tex}' which will most likely be nonexistent. Power users
-know that on many systems you can enter a file name of `\fn{nul}' to
-cause \tex/ to read in an empty file named \fn{nul.tex}. But it is
-precisely power users who are likely to know other ways of getting
-past this prompt (for example, on some systems typing a \ctrl{Z} or
-\ctrl{D} character also does something useful), and it is precisely
-the users with no other clue what to try next who won't know about
-\fn{nul.tex}.
-
-It seems that it would be useful for all standard distributions of
-\tex/ to provide files named \fn{.tex}, \fn{h.tex}, \fn{help.tex}, and
-\fn{?.tex} in the standard \tex/ inputs path, so that when users type
-\verb'h' or \verb'help' or \verb'?' or just press \return/, they will
-get the corresponding file. (Unfortunately, most operating systems
-don't permit the question mark in file names, which means that only
-the other three files will normally be viable.) \fn{Help.tex} and its
-clones could contain something as simple as:
- \begin{verbatim}
-\errmessage{Type ? to see your options; X to exit}
-\end{verbatim}
- which would give the user access to the full menu of normal error
-recovery options.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{This idea is discussed at greater length in a recent \tugboat/
-article of mine (to appear, late 1994).}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\subsubsection{A menu trick}
- The {\tt Please type another input file name} prompt is used to
-implement a sort of menu in the file \fn{lfonts.new} of the
-Mittelbach/Sch\"opf font selection scheme (\latex/ version), which
-has a statement \cw{input} \fn{fontdef.tex}, where the file
-\fn{fontdef.tex} is normally missing, intentionally, and the user is
-supposed to substitute another file name such as \fn{fontdef.ori} or
-\fn{fontdef.max}. The idea of comments designed to appear through
-\tex/'s display of error context (\secref{ss:errcontextcomments})
-could be used to good advantage here, to
-tell the user what other file names are likely
-candidates:
- \begin{verbatim}
-\input fontdef.tex % Try fontdef.ori or fontdef.max
-\end{verbatim}
-In this kind of application, additional help information in a message
-preceding the \cw{input} statement could also be useful.
-
-\subsection{Interrupt key}
- The interrupt key is a key (system-dependent, but \ctrl{C} on many
-systems) that allows you to interrupt
-\tex/ when it is in the middle of doing something else. The normal
-reaction of \tex/ when the interrupt key is pressed is to print a
-message
- \begin{verbatim}
-! Interruption.
-... % current context
-?
-\end{verbatim}
- in the same form as an error message, complete with a question-mark
-prompt, with the usual options available to the user.
-
-It's stretching the concept a bit to claim that the interrupt key is
-a way for users to send information to \tex/; it has the flavor of the
-story about the farmer who had to whack his mule over the head with
-an axe handle ``just to get his attention''. When you interrupt
-\tex/ you could easily find yourself in the middle of some
-complex macro where it would be inadvisable to do anything except use
-the \verb|X| option to exit. However, this in itself is frequently
-useful.
-
-\section{Stumbling blocks in the use of \cw{write} and \cw{message}}
-\label{s:stumblewrite}
-
-\subsection{Line breaking}
-
-As explained elsewhere (\secref{ss:message}) it is impossible to use a
-control character as a newline character in the argument of a
-\cw{message} or \cw{errmessage} command.
-{\em[Note (30-Oct-1993): that's no longer true, as of \tex/ version 3.141.]}
-\latex/ and \amstex/
-use \cw{immediate}\cw{write} instead of \cw{message} in their
-all-purpose message macros (\cw{typeout} and \cw{W@}), which allows
-them to have \verb"^^J" as the default newline character,
-thus leaving all of the printable characters usable in message texts.
-(If a given character is the current \cw{newlinechar}, there really
-is no way for \tex/ to print it on screen. Try setting
-\cw{newlinechar}\verb|=`\(| and see what happens to the file name
-messages for input files.)
-
-There is a minor inconvenience with the use of \ctrl{J} as the newline
-character. Under current conditions (as of 1993), it is usually wise to
-limit the length of all lines in a macro file to 72 characters, in
-order to avoid truncation problems that occasionally occur in, \eg.,
-electronic mail transmission. When constructing a long message, if you
-leave \cw{endlinechar} at its normal value of \verb;^^M; and put
-\verb;^^J;'s at the end of each message line, you get four extra
-characters at the end of each line, three for the \verb;^^J;%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{Although the {\tt\string ^\string ^J} combination will be
-resolved to a single character by \tex/, it is three characters when
-writing it and when sending it through mail. Assuming, that is, that
-you use \tex/'s double caret notation and don't try to insert a
-\ctrl{J} byte directly (not a good idea, because of system-dependent
-interpretation of \ctrl{J}).}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-and one for a percent sign to eliminate the space that would otherwise
-be produced on screen at the beginning of the next message line, by the
-\verb;^^M;. This means that the effective limit on the length of each
-message line is 68 characters rather than 72.
-
-But the clutter of four extra characters at the end of a line can be
-avoided by temporarily assigning \cw{endlinechar} \verb;=;
-\cw{newlinechar} while a message is being constructed. This is
-assuming, however, that a useful value of \cw{newlinechar} has been
-established and that the same value will be in effect when the
-message is sent. If the construction and sending are simultaneous,
-the code can be as simple as this:
- \begin{verbatim}
-\begingroup \endlinechar=\newlinechar
-\immediate\write16{Line 1
-Line 2
-Line 3
-}%
-\endgroup% this percent sign is necessary
-\end{verbatim}
- And then the actual message text in each line
-can run to the full 72-character length if necessary.
-If a useful value of \cw{newlinechar} has not been established
-(\eg., when using \plaintex/ without modifications), then
-rewrite the first line above as:
-\begin{verbatim}
-\begingroup \newlinechar=\endlinechar
-\catcode\endlinechar=12 % Make it 'other'
-\end{verbatim}
-Here we make the reasonable
-assumption that \cw{endlinechar} has its normal value
-of 13 (\verb;^^M;); even this assumption could
-be done without by adding the statement \cw{endlinechar} \verb;=;
-\verb;13; before the other assignments.
-
-The percent sign is necessary after the \cw{endgroup} in the first
-variant, because the endline character for a given line is added when
-the line is initially read, before \tex/ begins to execute the line.
-Therefore by the time \tex/ processes the \cw{endgroup} and reverts
-to the previous value of \cw{endlinechar}, it is too late to prevent
-getting a newline character at the end of the current line.
-
-For the same reason, a percent sign is not needed
-after the line that contains
-\begin{verbatim}
-\endlinechar=\newlinechar
-\end{verbatim}
-The endline character for that line has already been tacked on
-by \tex/ and cannot be changed by any statements within that line.
-(The \cw{catcode}, however,
-of the \cw{endlinechar} can be changed by statements within the line.)
-
-\subsection{Expanding control sequences}\label{s:excs}
-
-In messages to a \tex/ user it's frequently necessary to refer
-to control sequences or characters that have special category codes.
-This can sometimes be problematic because of the expansion that is
-done in the argument of a \cw{message} or \cw{write} command. For
-example, the line
- \begin{verbatim}
-\message{Beware of \footnote in a \message!}
-\end{verbatim}
-will typically generate a hundred or so error messages when
-\tex/ reaches \cw{footnote}. (Although \plaintex/, \amstex/, \latex/,
-and other macro packages define \cw{footnote} differently,
-all the definitions are equally explosive inside a \cw{message}.)
-And the line
-\begin{verbatim}
-\message{Beware of \endinput in a \message!}
-\end{verbatim}
- will cause the current input file to terminate immediately!
-(\cw{endinput} is an {\em expandable} control sequence, for
-reasons that are too technical
-to be worth discussing here.)
-
-Thus to talk about an expandable control sequence in a message, you
-must do something to inhibit the expansion. Ordinarily
-you apply \cw{string} or \cw{noexpand} to the control sequence;
-or you could put it into a token register and use
-\cw{the}\m{token register} in the message.
-Nonexpandable
-control sequences can be printed in a message without special
-protection, except that, if you do nothing to avoid it, you will
-always get an extra space after a control word, even in
-some cases where it is undesirable, as when the next
-thing is punctuation. For example, the message
-\begin{verbatim}
-\message{Enter desired value for \hangindent: }
-\end{verbatim}
-will print on screen with a space before the colon:
-\begin{verbatim}
-Enter desired value for \hangindent :
-\end{verbatim}
-
-Table~\ref{t:expansion} shows what happens to various sorts of things
-in a \cw{message} or \cw{write} argument, as well as various methods
-for suppressing expansion.
-
-\begin{table*}
-\caption[]{Expansion of \cw{message} and \cw{write} arguments%
-\label{t:expansion}}
-\writepage{Table}
-\smallskip
-\noindent
-\[\begin{tabular}{|r|l|}
-\hline
-This input\ \ \ & Produces this on screen\\
-\hline
-\verb|\message{E}|& \verb|E|\\
-\verb|\message{&}|& \verb|&|\\
-\verb|\message{#}|& \verb|##|\\
-\verb|\message{[\relax]}|& \verb|[\relax ]|\\
-\verb|\message{[\string\relax]}|& \verb|[\relax]|\\
-\verb|\message{[\empty]}|& \verb|[]|\\
-\verb|\message{[\noexpand\empty]}|& \verb|[\empty ]|\\
-\verb|\message{[\string\empty]}|& \verb|[\empty]|\\
-\verb|\message{[\space]}|& \verb|[ ]|\\
-\verb|\message{[ ]}|& \verb|[ ]|\\
-\verb|\def\spaces{\space\space\space\space|&\\
-\verb|\space\space\space\space}|&\\
-\verb|\message{[\spaces ]}|& \verb|[ ]|\\
-\verb|\message{[\romannumeral 37]}|& \verb|[xxxvii]|\\
-\verb|\message{[\uppercase{a}]}|& \verb|[\uppercase {a}]|\\
-\verb|\message{[~]}|& \verb|[\penalty \@M \ ]|\\
-\verb|\message{[\ifnum\time<600 Too early for me|&\\
- \verb|\else Let's go\fi]}|& \verb|[Too early for me]|\\
-\hline
-\end{tabular}\]
-\end{table*}
-
-\subsection{Collapsing spaces}
-
-If you want to print on screen a menu or similar message consisting
-of multiple columns nicely arranged, you have to deal with the fact
-that \tex/ normally condenses multiple spaces and tab characters
-to a single
-space. The easiest way to handle this difficulty is to change the
-catcode of the space character to, say, 12
-before reading the argument of a
-\cw{message} or \cw{write} command.
-
-\subsection{Special characters}
-
-The space character is but one example of a larger class:
-`special' characters, that is, ones that don't have category 11 or 12.
-An obvious
-question to ask is, ``What other special characters are difficult to
-use in a message?'' Table~\ref{t:expansion} shows how a few special
-characters are affected by the expansion process in a message: an
-\verb;&; (category 4) passes through unharmed, a \verb;#; (category
-6) gets doubled, and a \verb;~; (category 13) gets expanded.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{To be more precise, an active character like {\tt\string ~}
-will be treated like a control sequence; it will be expanded if
-expandable, otherwise it will be printed as is. After an
-assignment such as
-\cw{newcount}{ \tt\string ~}, or \cw{let}{ \tt\string ~ =} \cw{relax},
-the {\tt\string ~} is not expandable.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-Table~\ref{t:specchars} is a complete list
-of the various categories of characters,
-along with ways to produce those characters that cannot simply be
-used as is. A few categories deserve more extensive comment.
- \begin{description}
- \item[Category 0---Escape Character] It's normally not a problem to
-print an escape character because it usually occurs as part of a
-control sequence, which can be printed using \cw{string} (and even
-that may not be necessary if the control sequence is nonexpandable).
-Even when the escape character is not, logically speaking, part of a
-control sequence, it can be sent in a message by letting it combine
-from \tex/'s point of view with the following character(s). For
-example, to send the message {\tt Commands in TeX normally begin with
-a `\string\' character}, the backslash doesn't need to be treated as
-an isolated character; combined with the following apostrophe, it
-forms a control symbol to which \cw{string} can be applied.
-
- The only time this fails is when the backslash must be sent as the
-very last character of a message. Although this case is
-extremely unlikely, the solution involves a rather useful
-little macro:
-\begin{verbatim}
-\def\xstring{\expandafter\gobble\string}
-\def\gobble#1{}% if this is not already defined
-\end{verbatim}
-With this definition,%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{Cf.\ the answer to Exercise 7.10 in \texbook/. The implicit
-assumption that \cw{escapechar} is in the range 0--255 may not be
-completely reliable.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\cw{xstring} not only turns a control sequence into a string of
-characters, it also removes the leading backslash, so that
-\cw{xstring}{\tt\string\\} will produce a single backslash
-character, as desired.
-Another solution that involves setting \cw{escapechar}
-temporarily to $-1$ would also be possible, provided that the remainder
-of the message doesn't need to use \cw{string} in a normal way,
-with a printable escape character.
-\begin{verbatim}
-\begingroup \escapechar=-1
-\message{ ...\string\\}%
-\endgroup
-\end{verbatim}
-On the other hand,
-it might be useful to have a category-12
-backslash character always available through a macro,
-not only for messages but for other purposes as well:
-\begin{verbatim}
-\edef\backslashchar{\xstring\\}
-\end{verbatim}
-Then \cw{backslashchar} could be used in a message instead of
-\cw{xstring}{\tt\string\\}. If you needed to use it frequently you
-would presumably give it a shorter name.
-
-\item[Categories 1 and 2] Characters of category 1 and 2 can be
-printed without any problem in a message {\em if they occur
-in matching pairs}. For these purposes, character codes are irrelevant;
-\verb;];$_1$ and \verb;*;$_2$ match up as well
-as \verb;{;$_1$ and \verb;};$_2$.
-If a single, unmatched character of one of these categories
-must be printed on screen, \cw{xstring} can be used with the
-corresponding
-control symbol, \eg., \cw{xstring}{\tt\string\{} or
-\cw{xstring}{\tt\string\}}.
-
-\item[Categories 5, 9, 14, 15] These categories are similar to category
-0. Characters of category 0 (escape), category 5 (end-of-line), 9
-(ignored), 14 (comment), and 15 (invalid character) cannot enter a
-token list [\texbook/, Exercise 7.3], so that, actually, it doesn't make much
-sense to ask what happens to them in the argument of a \cw{message} or
-\cw{write} command, which do not deal with raw characters from an input
-stream but with token lists. The question is not how to print a
-character token of category 14 in a message (since that is impossible)
-but, how to produce a category-12 \verb;%; when the normal catcode of
-\verb;%; is 14. The answer is to
-use \cw{xstring} with the corresponding control symbol, \eg.,
-\cw{xstring}{\tt\string\%}.
-
-\end{description}
-
-Then again, a better idea might be to pick one character, make it
-active (probably {\tt\string ~} since it's already active in most
-macro packages), and define it to produce category-12
-characters by their hexadecimal value. With preliminary
-definitions such as:
-\begin{verbatim}
-\escapechar=-1
-\def\twelvechar#1#2{\csname hex#1#2\endcsname}
-\expandafter\edef\csname hex5c\endcsname{\string\\}
-\expandafter\edef\csname hex25\endcsname{\string\%}
-\expandafter\edef\csname hex7e\endcsname{\string\~}
-...
-\escapechar=`\\
-\end{verbatim}
-it would become possible to write, for example,
-\begin{verbatim}
-\begingroup
-\let~=\twelvechar
-\message{Printing backslash ~5e, percent ~25, and tilde ~7e.}
-\endgroup
-\end{verbatim}
-and thus send all manner of special characters by substituting a
-three-character sequence starting with {\tt\string~}.
-
-\begin{table}
-\caption[]{Methods for incorporating various
-categories of characters in a \cw{message}
-or \cw{write} argument\label{t:specchars}}
-\writepage{Table}
-\smallskip
-%
-\begin{tabular}{|rrp{.57\columnwidth}|}
-\hline
-Catcode& Example& Method\\
-\hline
-0& \verb;\;& Normally handled as part of a control
-sequence, except at the very end of a message, in which case use
-\cw{xstring}{\tt\string\\}\\
-% Using \mbox here to suppress a line-breaking problem
-% until/unless I can get around to fixing it.{28-Nov-1992 mjd}
-1& \verb;{;& \mbox{\cw{xstring}{\tt\string\{}} if unmatched\\
-2& \verb;};& \mbox{\cw{xstring}{\tt\string\}}} if unmatched\\
-3& \verb;$;& as is\\
-4& \verb;&;& as is\\
-5& \verb;^^M;& \mbox{\cw{xstring}}\verb;\^^M; (see the note below)\\
-6& \verb;#;& \mbox{\cw{string}}\verb;#; to avoid doubling, or
- \cw{xstring}{\tt\string\#}\\
-7& \verb;^;& as is (except in rare combinations
- like \verb;^^>;)\\
-8& \verb;_;& as is\\
-9& \verb;^^@;& \mbox{\cw{xstring}}\verb;\^^@; (see the note below)\\
-10& space& as is, except use \cw{space}'s to
- produce multiple spaces\\
-11& a& as is\\
-12& /& as is\\
-13& \verb;~;& \mbox{\cw{string}{\tt\string ~}}, \cw{noexpand}\verb;~;\\
-14& \verb;%;& \mbox{\cw{xstring}{\tt\string\%}}\\
-15& \verb;^^?;& \mbox{\cw{xstring}}\verb;\^^?; (see the note below)\\
-\hline
-\end{tabular}
-\par
-\smallskip
-\small
-Note: Because of the way \cw{string} operates, something like
-\cw{xstring}{\tt\string\^^@} will not produce a single
-character but three category-12 characters,
-{\tt \string^ \string^ @}. This may normally be what you want, but it
-won't be satisfactory if
-the character in question has a special purpose---perhaps to cause a
-newline, or to print on-screen as an accented letter.
-
-\end{table}
-
-\subsection{Space after a control word}
-
-In \secref{s:excs} it was pointed out that an unwanted space may be
-printed at the end of a control word under some circumstances. It's
-equally possible that a wanted space at the end of a control word may
-disappear under other circumstances. For example, it is not uncommon
-to see macro writers use
-the combination \cw{string}\cw{controlseq}\cw{space} when a
-control word occurs as an isolated word in the middle of a message;
-the final \cw{space} is necessary because a plain space after
-\cw{controlseq} would simply disappear according to \tex/'s normal
-rules for finding the end of a control sequence name.
-
-The solution to both of these difficulties is easy: use \cw{string}
-if you don't want a space after the control word, and use
-\cw{noexpand} if you do want a space.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{I hadn't noticed the usefulness of \cw{noexpand} for this
-purpose until Michael Spivak drew it to my attention, in a
-conversation at the 1991 TUG meeting in Boston.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-Note: The character tokens produced by \verb|\string| can be passed
-without harm through any number of subsequent steps, including
-expansion via \cw{edef} or similar operators, while \cw{noexpand}
-only protects an expandable macro through the first expansion step.
-
-\subsection{Outer Control Sequences}
-\label{ss:outer}
-You can't send an \cw{outer} control sequence in a \cw{message}
-unless you do something to get around the outerness.
-To illustrate, I present
-a transcript of \tex/'s reaction to the following line:
-\begin{verbatim}
-\message{Control-L: ^^L}
-\end{verbatim}
-along with various attempts to recover from the resulting error
-message. (\ctrl{L} is defined as an active character with the `outer'
-attribute in both \plaintex/ and \latex/.)
-\begin{verbatim}
-Runaway text?
-Control-L:
-! Forbidden control sequence found while scanning text of \message.
-<inserted text>
- }
-<to be read again>
- ^^L
-l.149 \message{Control-L: ^^L
- }
-? 1
-Type <return> to proceed, S to scroll future error messages,
-R to run without stopping, Q to run quietly,
-I to insert something, E to edit your file,
-H for help, X to quit.
-? h
-I suspect you have forgotten a `}', causing me
-to read past where you wanted me to stop.
-I'll try to recover; but if the error is serious,
-you'd better type `E' or `X' now and fix your file.
-?
-\end{verbatim}
-
-Notice that when I tried to type a \verb;1; to delete the offending
-\cw{outer} token, I got instead a help message indicating that token
-deletion is not an option at this point. (The reason behind this lack
-of token deletion is fairly technical: \tex/ was in the middle of a
-procedure called {\it get\_token} when it stumbled over the \ctrl{L}
-character; but since token deletion itself involves calling {\it
-get\_token}, allowing token deletion here would mean calling
-{\it get\_token}
-from inside itself---something it was not designed for.)
-
-\subsection{Semi-verbatim alternative}
-An alternative way of handling message texts, that eliminates the
-need to remember special methods for various kinds of
-message elements, is to temporarily change the
-catcodes of all special
-characters while reading the argument of
-a message. With the following definitions:
-\begin{verbatim}
-\def\verbwrite{\begingroup
- \def\do##1{\catcode`##1=12}%
- \do\ \dospecials
- \catcode\endlinechar=12
- \newlinechar=\endlinechar
- \verbcontinue}
-\begingroup \lccode`\/=`\\
-\lowercase{\endgroup
-\def\verbcontinue##1/}endverbwrite{%
- \immediate\write16{#1}\endgroup}
-\end{verbatim}
-you could send messages like
-\begin{verbatim}
-\verbwrite !#$%$%#^%&*~@^^"<?:}{>|+
-_^+\footnote_|)\\90\
-\bye ^^L \endinput
-\endverbwrite
-\end{verbatim}
-without regard to the contents. The main limitation of this approach
-is that in order for the handling of the special characters to work,
-\cw{verbwrite} has to be executed directly in a file; it cannot be
-embedded in a macro. Furthermore, the message text is unalterable: it
-cannot contain a context-dependent part, as in a message to display
-the current font name on screen:
-\begin{verbatim}
-\message{Current font is \fontname\font.}
-\end{verbatim}
-This message could not be generated with \cw{verbwrite} because
-\cw{verbwrite} would not expand \cw{fontname}.
-
-\subsection{Presenting information in the best possible form}
-
-Example: In reporting a dimension to the user, it is usually
-desirable to report the value rounded to tenths or hundredths, in
-units that are convenient for the user: points for a font size or
-line spacing value; centimeters, picas, or inches for the height or
-width of a page or of an included figure.
-
-The file \fn{cnvunits.tex} gives some examples of what is possible in
-this vein, including conversions from points to picas, inches, and
-centimeters. The conversions from points to other units are the most
-important ones because when \cw{the} is applied to a dimension or
-skip register \tex/ always reports the value in \verb;pt; units. (Not
-counting \cw{muskip} registers, where the reported unit is \verb;mu;.)
-
-\reqspace{1.5in}
-\verbatiminput{cnvunits.tex}
-
-Another example: if you want to report the \cw{mathcode} of a
-particular character to the user, \cw{number}\cw{mathcode`}\cw{x} or
-\cw{the}\cw{mathcode`}\cw{x} aren't too great, because they produce a
-decimal number, when it would be more
-convenient to get a hexadecimal number filled out to four digits, so
-that the class, math family, and font position information can be
-read off directly.
-Extending some ideas from \fn{testfont.tex} \cite{testfont}, we can
-write a quite friendly \cw{reportmathcode} function:
-\begin{verbatim}
-% When \meaning is applied to a \mathchar, it produces
-% \mathchar"<digits> where <digits> are 1 to 4 hexadecimal digits.
-% The function \gethex strips off the prefix and leaves only the
-% digits.
-\def\gethex#1"{}
-% The function \reportmathcode takes a character or control symbol
-% argument and reports the associated mathcode in hexadecimal
-% form, filling out to four digits with leading zeros, if
-% necessary.
-\def\reportmathcode#1{%
- \begingroup
- \mathchardef\temp=\mathcode`#1 \relax
- \edef\temp{\expandafter\gethex\meaning\temp}%
- \count@="\temp\relax
- \edef\temp{%
-% Fill in leading zeros
- \ifnum\count@<"1000 0%
- \ifnum\count@<"100 0%
- \ifnum\count@<"10 0\fi\fi\fi
- \temp}%
- \message{The mathcode of \string#1 is: "\temp}%
- \endgroup}
-\end{verbatim}
-
-\begin{example}
-\begin{examplebox}%
-\caption[]{The \cw{printoptions} command of \amstex/ version 1.1.
-\cw{W@} is the \amstex/ abbreviation for
-\cw{immediate}\cw{write}{\tt 16}}\label{amstex/syntax}%
-\writepage{Example}
-\hfuzz=2em
-\begin{verbatim}
-\def\S@{S } \def\G@{G } \def\P@{P }
-\newif\ifbadans@
-\def\printoptions{\W@{Do you want S(yntax check),
- G(alleys) or P(ages)?^^JType S, G or P, follow by <return>: }%
- \loop \read\m@ne to\ans@
- \xdef\next@{\def\noexpand\Ans@{\ans@}}%
- \uppercase\expandafter{\next@}%
- \ifx\Ans@\S@\badans@false\syntax\else
- \ifx\Ans@\G@\badans@false\galleys\else
- \ifx\Ans@\P@\badans@false\else
- \badans@true\fi\fi\fi
- \ifbadans@\W@{Type S, G or P, follow by <return>: }%
- \repeat}
-\end{verbatim}
-
-\end{examplebox}%
-\end{example}
-
-\section{Stumbling blocks in the use of \cw{read}}
-\label{s:stumbleread}
-
-\subsection{An example: \amstex/'s \cw{printoptions} command}
-
-Consider the \cw{printoptions} command of \amstex/ 1.1
-(Example~\ref{amstex/syntax}):
-The definition of this command shows one way of dealing
-with the extra space at the end of a macro created using \cw{read}:
-Define some macros consisting of the expected answers, with the extra
-space included, and then use \verb|\ifx| to compare them to the
-user's response. It also shows how to uppercase the user's response
-so that lower- and uppercase responses will be treated identically.
-This is the second method given in the answer to \texbook/'s Exercise
-20.19. One more noteworthy feature of \cw{printoptions} is that it
-runs a loop that doesn't quit until the user gives an acceptable
-answer.
-
-In \cw{printoptions} since \verb|\W@| is defined to be
-\verb|\immediate|\5\verb|\write16|, and the \cw{write} command always
-starts a new line after its message text, we can see that the reply
-typed by the user will appear on the next line instead of immediately
-after the colon. This brings up the question: what if we want the
-user's reply to appear on the same line?
-
-One way to do this is to use \cw{message} to send the last line of
-the prompt message, and use \cw{write} to send the previous line(s).
-For example:
- \begin{verbatim}
-\W@{Do you want S(yntax check), G(alleys) or P(ages)?}%
-\message{Type S, G or P, follow by <return>: }%
-\end{verbatim}
- This idea is used in the \latex/ option \fn{checknum.sty}
-\cite{checknum}. An alternative would be to put the whole prompt in a
-single \cw{message} with embedded newline characters (as long as you
-are careful to select a character for \cw{newlinechar} that is not
-needed in the text of the message).
-
-\subsection{{\ntt{\char94}{\char94}M} at the end of a line}
-In \label{s:endlinechar}
-\cw{printoptions} separate macros \cw{S@}, \cw{G@}, and
-\cw{P@} are defined for each legitimate response. If the menu
-becomes more extensive, this technique is rather wasteful
-of hash size, main memory, and other useful commodities.
-The problem here is that the
-\verb|^^M| character at the end of the user's response
-is included by \cw{read} in the macro being read.
-Under normal conditions
-\verb|^^M| is converted to a space; however, another
-possibility\Dash if the user just enters \return/ without
-typing any response\Dash is that the \verb|^^M| will produce a \cw{par}
-token (following the general rule that an empty line is
-equivalent to \cw{par}). The best approach is
-to prevent the \verb|^^M| character from getting into the
-read macro in the first place. This can be done in two ways:
-setting the catcode of \verb|^^M| to 9 (``ignore''), or
-setting \cw{endlinechar} to $-1$.
-
-Unfortunately, this immediately raises another difficulty: we want to keep
-the catcode change or \cw{endlinechar} change local so that it will
-affect only the \cw{read}. This could be accomplished by
-saving the current catcode or \cw{endlinechar} (just in case)
-and restoring it after the \cw{read} is done, but it's
-simpler to enclose the \cw{read} in a group:
-\begin{verbatim}
-\begingroup
-\endlinechar=-1
-\global\read16 to\answer
-\endgroup
-\end{verbatim}
-Here the \cw{global} prefix makes \cw{answer}
-retain its definition beyond the \cw{endgroup}.
-
-With this modification the tests done by \cw{printoptions} could be
-simplified to
-\begin{verbatim}
-\if\Ans@ S ...\else
-\if\Ans@ G ...\else
-\if\Ans@ P ...\else
-...
-\end{verbatim}
-which renders the macros \verb|\S@|, \verb|\G@|, \verb|\P@| unnecessary.
-
-On the other hand, we have advanced to some splendid new
-complications: \verb|\Ans@| might now be completely empty, if the
-user just pressed the \return/ key, and an empty \verb|\Ans@| would
-bollix up the \verb|\if| tests. This case is easy to handle, though:
-add an extra branch \verb|\ifx\Ans@\empty...| at the beginning.
-We have the opposite problem if the user types more than one
-letter: on the true branch (the `none-of-the-above' branch, unless
-the user's first two letters happen to be identical), the extra
-characters could potentially cause spurious typesetting activity. As
-it happens, we can kill two birds with one stone, as we'll see
-in \secref{s:defaults}.
-
-\subsection{Uppercasing input}
-
-Next let's look at the procedure used by \cw{printoptions} for
-uppercasing the user's reply: after reading \verb|\ans@|, \cw{xdef}
-and \cw{uppercase} are applied to it as follows:
- \begin{verbatim}
-\xdef\next@{\def\noexpand\Ans@{\ans@}}%
-\uppercase\expandafter{\next@}%
-\end{verbatim}
- A more economical version of the same technique would be:
- \begin{verbatim}
-\xdef\ans@{\uppercase{%
- \gdef\noexpand\ans@{\ans@}}}%
-\ans@
-\end{verbatim}
- If \verb|\ans@| contains \verb|s|
-to begin with, then after the \cw{xdef} has been completed, the
-definition of \verb|\ans@| is \verb|\uppercase{\def\ans@{s}}|. Then calling
-\verb|\ans@| causes it to redefine itself, but not before the tokens in the
-argument of \cw{uppercase} are suitably uppercased.%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{Only the \verb|s| is
-affected because \cw{uppercase} operates only on letters, not
-on control sequences or nonletters. Well, to be more precise: only on
-characters that have a nonzero \cw{uccode}; they don't have to have
-catcode 11.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-With this change, the auxiliary macro \verb|\Ans@| is no longer needed.
-
-To simplify the structure of macros using this uppercasing process,
-it could be embodied in a dedicated function of its own:
-\begin{verbatim}
-\def\uppermac#1{\xdef#1{\uppercase{\gdef\noexpand#1{#1}}}%
- #1}
-\end{verbatim}
-
-A nonglobal alternative may sometimes be desirable, however.
-Also the full expansion may not be wanted in some cases when
-the contents of the macro being uppercased are `fragile'.
-An alternative that is safer with respect to expansion:
-\begin{verbatim}
-\def\uppermac#1{%
- \uppercase\expandafter\expandafter\expandafter{%
- \expandafter\toks@\expandafter{#1}}%
- \edef#1{\the\toks@}}
-\end{verbatim}
-
-\subsection{Default responses}
-One \label{s:defaults}
-last refinement in \cw{printoptions} would be to provide
-a default response if the user's response is empty (that is,
-the user only hit
-the \return/ key). One method involves an auxiliary
-macro like the \latex/ macro \verb|\@car|:
- \begin{verbatim}
-\def\@car#1#2\@nil{#1}
-\end{verbatim}
-
-A more descriptive name (for those whose knowledge of Lisp is nil)
-would be \cw{firsttoken}:%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\footnote{Using {\tt\string @} as the ending
-delimiter is pretty safe if we make sure that it has catcode 11 at the
-time \cw{firsttoken} is defined and some other catcode at the time of
-reading user input.}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- \begin{verbatim}
-\def\firsttoken#1#2@{#1}
-\end{verbatim}
-Then, if we want \verb|\ans@| to be
-given a default value of P when it comes back empty from the user, we
-do this:
- \begin{verbatim}
-\xdef\ans@{\expandafter\firsttoken\ans@ P@}
-\end{verbatim}
-At the critical intermediate step, the following cases will arise:
- \begin{quote}
- \begin{tabular}{l|l}
-\hline
-User input& Critical step\\\hline
-s& \verb|\firsttoken|\,\,\verb|s|\,\verb|P|\,\verb|@|\\
-P& \verb|\firsttoken|\,\,\verb|P|\,\verb|P|\,\verb|@|\hphantom{\tt syn}\\
-\m{return}& \verb|\firsttoken|\,\,\verb|P|\,\verb|@|\\
-\hline
-\end{tabular}
-\end{quote}
- This gives exactly what we want.
-
-The application of \cw{firsttoken} also gives us a nice way around the
-difficulty mentioned earlier if the user types more than one character.
-The case
-\begin{quote}
-\begin{tabular}{l|l}
-\hline
-synt& \verb|\firsttoken|\,\,\verb|s|\,\verb|y|\,\verb|n|\,\verb|t|\,%
-\verb|P|\,\verb|@|\\
-\hline
-\omit\hphantom{User input}\kern2\tabcolsep\cr
-\end{tabular}
-\end{quote}
- will produce the same result as the first case above, because
-everything after the first \verb|s|, up to the category-11 \verb|@| character,
-will be discarded.
-
-\subsection{A new \cw{printoptions}}
-
-By noticing that the \cw{xdef}'s used in
-the \cw{firsttoken} step and the \cw{uppercase}
-step can be combined, and putting together everything
-discussed so far, we come up with a new, improved version
-of \cw{printoptions}:
- \begin{verbatim}
-\def\printoptions{%
- \W@{Do you want S(yntax check), G(alleys) or P(ages)?}%
- \message{Type S, G or P, follow by <return>: }%
- \begingroup \endlinechar\m@ne
- \global\read\m@ne to\ans@
- \endgroup
- \xdef\ans@{\uppercase{%
- \def\noexpand\ans@{%
-% Default to `P':
- \expandafter\firsttoken\ans@ P@}%
- }}%
-% Execute \ans@ to uppercase itself:
- \ans@
- \if S\ans@ \syntax\else
- \if G\ans@ \galleys\else
- \if P\ans@ % fine, no action needed
- \else \message{Unknown option: \ans@;
- `pages' option will be used}\fi
- \fi\fi
-}
-\end{verbatim}
- The loop has been discarded in favor of simply taking the normal
-default action if the user's reply is unintelligible.
-
-\subsection{Matching braces}
-\label{ss:readbrace}
-The \cw{read} command normally reads only one line, but if the first
-line does not contain an equal number of left and right braces, \tex/
-will continue to read additional lines until equality is achieved
-(cf.~\secref{ss:readprim}).
-This could be trouble in interactive use of \cw{read}, if the user
-doesn't understand what has happened---it's difficult to extricate
-yourself except by getting the braces right.
-
-
-On the other hand, if you {\em want} to enter more than one line
-at a time, you can do it by entering an opening brace on the first
-line and the matching closing brace on the last line; this
-is illustrated in Example~\ref{ex:readbrace}.
-In the example there are two things worthy of note:
-(1)~The braces appear in the replacement text of the macro \cw{name};
-this may be undesirable, depending on the intended use of the
-information. (2)~There's no space between
-Frank and Henry in \cw{name}.
-
-The loss of the space has two causes. First, \cw{endlinechar} was set to
-$-1$ (so that an empty line will not produce a \cw{par}---see
-\secref{s:endlinechar}), and
-second, the space that was typed at the beginning of the second
-line of the response didn't register either, following \tex/'s
-usual rule of ignoring spaces at the beginning of a line
-(\texbook/, Chapter~8, double dangerous bends).
-
-\begin{example*}
-\begin{examplebox}
-\caption[]{Reading multiple lines with a single \cw{read} command}%
-\label{ex:readbrace}%
-\writepage{Example}
-First, the input file:
-\begin{verbatim}
-\begingroup \newlinechar=`\& \endlinechar=-1
-\message{&Please enter your name: }\global\read-1 to\name
-\message{&And your Social Security number: }\global\read-1 to\ssno
-\endgroup
-\show\name \show\ssno
-...
-\end{verbatim}
-Now the log file, including the responses (a \return/ was typed after
-{\tt Frank}):
-\begin{verbatim}
-Please enter your name: {Joe Bob Willie Clark Mark Raphael Ferguson Frank
- Henry James Percival Emerson Elmo Davenport, Jr.}
-
-And your Social Security number: 360-60-6000
-> \name=macro:
-->{Joe Bob Willie Clark Mark Raphael Ferguson FrankHenry James Percival Emerson
- Elmo Davenport, Jr.}.
-l.7 \show\name
- \show\ssno
-?
-> \ssno=macro:
-->360-60-6000.
-l.7 \show\name \show\ssno
-
-?
-\end{verbatim}
-\end{examplebox}
-\end{example*}
-
-\subsection{Outer macros}\label{ss:readouter}
-
-{\em[This section is partly obsolete as of \tex/ version 3.141; see
-\secref{ss:readprim}.]}
-
-If you enter an \cw{outer} macro in response to a \cw{read} prompt,
-\tex/ will inform you in an error message
-that it has inserted a closing brace.
-Unfortunately, this is rather unhelpful, since you will then have the
-matching brace problem described in the previous section; your answer
-now contains an unmatched right brace, and if you don't type `x' at the
-question-mark prompt to exit, you could get stuck.
-Fortunately, it is unlikely for anyone to ever enter an outer macro in
-response to a prompt, since in \plaintex/ the set of such macros is
-small and used relatively infrequently, and in \latex/ there are almost
-no \cw{outer} macros at all; accidental typing of a \verb;^^L;
-character (which is active and outer, in \plaintex/ and \latex/) is
-perhaps the least unlikely possibility.
-
-
-\begin{example}
-\begin{examplebox}
-\caption[]{Outer control sequence choking a \cw{read} operation. Compare
-this to the behavior of \ctrl{L} inside \cw{message} as discussed in \secref{ss:outer}.}
-\label{ex:outerread}%
-\writepage{Example}
-Input file:
-\begin{verbatim}
-\read16 to\x \show\x
-\end
-\end{verbatim}
-
-Log file:
-\def\next{\begin{verbatim}\rightskip0pt plus100pt minus 100pt
-\linepenalty 500 }
-\next
-\x=^^L
-Runaway definition?
-->
-! Forbidden control sequence found while scanning definition of \x.
-<inserted text>
- }
-<read *> ^^L
-
-l.1 \read16 to\x
-
-? h
-I suspect you have forgotten a `}', causing me
-to read past where you wanted me to stop.
-I'll try to recover; but if the error is serious,
-you'd better type `E' or `X' now and fix your file.
-
-? 1
-Type <return> to proceed, S to scroll future error messages,
-R to run without stopping, Q to run quietly,
-I to insert something, E to edit your file,
-H for help, X to quit.
-?
-a
-\
-#
-{
-> \x=macro:
--> } \par a \^^M## { .
-l.2 \show\x
-
-?
-\end{verbatim}
-
-\end{examplebox}
-\end{example}
-
-Some observations:
-
----If the user checks the help message and stops to ponder the
-situation, they have the opportunity, at least, to realize that E or
-X to exit is indeed the wise choice. They're not {\em really\/}
-stuck unless they carelessly try to continue.
-
----If the user doesn't avail him/herself of the E or X option, just
-about anything else that they try will be ineffective. On some
-systems even the interrupt key won't help here; that leaves
-essentially two ways out: match up the closing brace, or type another
-outer thing to get back to the \verb;?; prompt and the associated
-error recovery opportunity.
-
-
-\subsection{Catcodes}
-
-The treatment of a user's response depends on the use to which it
-will be put. \latex/'s \cw{typein} command is designed to take the
-response and execute it, and therefore reads the user's response
-using normal category codes. On the other hand, \fn{testfont.tex}
-\cite{testfont}
-changes the category codes of the special characters to 12 when
-reading a user response, because the response will not be executed
-but will be processed as simple character data. This approach is
-probably the better one for most applications, since it avoids the
-possibility of problems with things like mismatched braces or outer
-control sequences, and since the \cw{read} command is used more often
-to read strings of ordinary characters than to read executable control
-sequences.
-
-
-\subsection{\fn{Latex.tex}: \cw{typeout} and \cw{typein}}
-
-An interesting aspect of the \cw{typeout} and \cw{typein} commands in
-\latex/ is that they aren't private control sequences (with \verb|@|
-characters in their names); they are available for use in ordinary
-document files. One of the uses suggested in the \latex/ manual is for
-entering an \cw{includeonly} command interactively each time a
-multipart document is processed. More commonly, however, \cw{typeout}
-and \cw{typein} are used internally in documentstyle files, or in
-special applications such as \fn{docstrip.tex} [Mittelbach, 1991]
-where the distinction between private and public control sequences is
-irrelevant.
-
-The purpose of \cw{typein} is (a)~to print a message on screen, and
-(b)~to
-read a response (one line) from the user, either into the internal
-macro \cw{@typein}, or into a macro chosen by the macro writer. If
-\cw{@typein} is used to receive the response, it will be executed as
-\cw{typein}'s final action. Otherwise the response will be stored in
-the designated alternate macro, without execution. (Cf.\ the \latex/
-manual, \S4.6.)
-
-I found the definition of \cw{typein} in \fn{latex.tex} more difficult
-to understand than almost anything else of comparable length that I
-have looked at. All the complications in the definition serve two
-goals: (1)~If the user simply presses the {\sc return} key, the
-resulting \cw{par} token needs to be discarded, leaving the macro that
-holds the user reply empty; and (2)~if the user reply is not empty, it
-will usually, but not always, contain a final space which needs to be
-trimmed off. The fact that the final space might be missing is the
-crucial problem.
-
-A simpler version of \cw{@xtypein} could be written using
-a temporary deassignment of \cw{endlinechar}:
-\begin{verbatim}
-\def\@xtypein[#1]#2{\typeout{#2}\let\@typein\relax
- \begingroup \endlinechar\m@ne \global\read\z@ to#1\endgroup
- \@typein}
-\end{verbatim}
-This solves both the \cw{par} problem and the trailing space problem.
-
-However, much of the initial development of \latex/ took place in 1982
-and 1983, before the ultimate release of \tex/82, version~1.0
-(officially: December 3, 1983), and in old \TeX{} there was no access
-to \cw{endlinechar}. (In fact many features of \tex/82 were added by
-Knuth in response to reports from Lamport about various limitations of
-the language that he ran into in the course of \latex/'s development.)
-If Lamport noticed later that \cw{endlinechar} could be applied in
-\cw{@xtypein}, he probably invoked the principle `If it ain't broke,
-don't fix it' and left it alone.
-
-\subsection{\fn{Docstrip.tex}: \cw{typeout}, \cw{typein}, progress reports}
-
-As an example of the use of \cw{typeout} and \cw{typein},
-consider \fn{docstrip.tex}
-\cite{docstrip}. This is a \latex/
-utility used for processing a documented macro file to remove
-comments (the stripped-down version of a large macro file
-will load significantly faster at run-time, at least on
-less powerful computers). The use of
-\cw{typeout} in \fn{docstrip.tex} is mainly a convenience,
-to avoid the more cumbersome phrase
-\cw{immediate}\cw{write16}, but \cw{typein} has a more
-significant advantage---it takes care of removing a space
-at the end of the user response, if present.
-
-In the following fragment from \fn{docstrip.tex}, the user is
-informed that an auxiliary file named \fn{docstrip.cmd} has been
-detected, and is asked whether it should be used. The response is
-read into the macro \cw{answer}.
- \begin{verbatim}
-\typeout{*************************************************}
-\typeout{* Batch file docstrip.cmd found. Use it ? (y/n) *}
-\typein[\answer]
- {*************************************************}
-\def\@tempa{y}%
-\ifx\@tempa\answer \process@batchfile \fi
- \end{verbatim}
-An analysis of the technique in this fragment brings
-out a few noteworthy observations.
- \begin{itemize}
- \item In the prompt (line 2) the acceptable responses are
-listed: \verb;y; or \verb;n;.
- \item Since \cw{typein} doesn't change the case
-of the user's response, and there's no code here in
-\fn{docstrip.tex} to change case, we can deduce that a
-response of \verb;Y; will be treated as a No.
- \item If the user response is \verb;yes;, then \cw{answer}
-and \cw{@tempa} will have different definitions, and the
-\cw{ifx} test will be false.
- \item If the user is expected to enter only a single letter,
-we might ask, why is an \cw{ifx} test necessary? Why not
-just use \cw{if} \verb|y|\cw{answer}\cw{process@batchfile}
-and omit the extra step \cw{def}\cw{@tempa}\verb|{y}|?
-However, this would invite trouble if the user pressed
-{\sc return} without typing anything. Then \cw{answer} would
-be empty (because of the special handling with \cw{@defpar}
-in \cw{typein}) and before completing the evaluation of
-the \cw{if}, \tex/ would continue beyond \cw{answer}
-to expand \cw{process@batchfile} in search of a character
-to compare with the \verb;y;. Although this would give a correct
-result for the \cw{if} test, because the
-first nonexpandable
-token in the definition of \cw{process@batchfile}
-is not a \verb;y;, the trouble is that the token will be
-absorbed by the \cw{if} operation, which will throw a wrench
-into subsequent processing.
-
-\end{itemize}
-
-{\it Note.} The version of \fn{docstrip.tex} from which I took these
-examples was an early, unperfected version with an explicit
-disclaimer from the author that it was a quick hack, and should not be
-considered an example of his best macro writing. I discuss the early
-version here, however, precisely because it illustrates so well some
-of the typical difficulties in writing \tex/ dialog.
-
-An interesting feature of \fn{docstrip} is the ability to see on
-screen the progress being made in processing the current file. If
-this feature is turned on (with a \cw{showprogress} command), then
-\fn{docstrip} prints on screen a percent sign for each comment
-removed and a period for each line of code that is kept. This kind of
-visual feedback is not just frippery and ornamentation, bells and
-whistles. A typical user begins to get nervous if a running program
-allows several seconds to pass by without any observable change on
-screen. On a fast system, it's straightforward to deduce that such a
-pause means something has gone wrong, whereupon the user can press an
-interrupt key to investigate the problem without wasting time. But on
-a slow system the poor user faces the dilemma: Abort unnecessarily,
-and a restart will be required, with all the time consumed so far
-wasted; or continue waiting when the program might simply be spinning
-its wheels and accomplishing nothing. So when a task might take
-more than, say, five seconds, it's good programming practice to give
-some sort of progress reports.
-
-The progress reports of \fn{docstrip} use \cw{message} which,
-as discussed earlier, adds a space between consecutive messages if
-the second message is not too long to fit on the current line. So
-what you see on screen is something like
-\begin{verbatim}
-% % % % % % % % % % . . . % % . . . . . % % % . . % . % % . % . %
-. . . % % . % . % % % % % % % % % . . % . % % . % % % % . . . % .
-. . .
-\end{verbatim}
-produced by repeated \cw{message}\verb"{%}" or \cw{message}\verb"{.}".
-Recalling the newline behavior of \cw{immediate}\cw{write}, picture
-what would happen if it were used instead of \cw{message} to see
-why \cw{message} is necessary for this application.
-
-\section{Miscellaneous}
-
-\subsection{Checking a response for validity}
-Here is the (slightly condensed) text of Brian Hamilton Kelly's UK\tex/
-post that contained \fn{checknum.sty} \cite{checknum}, which asks the
-user for a number and checks to make sure that a valid number was
-entered.
-
-\verbatiminput{uktex91.1x}
-
-\subsection{em\tex/ 8-bit output}\label{ss:8bit}
-One interesting feature of em\tex/ \cite{emtex} is the 8-bit output
-option. On PCs, the characters between 176 and 223 are box-drawing
-characters; with the 8-bit output option of em\tex/, putting these
-characters into a \cw{message} or \cw{write} command allows you to
-draw some fairly elaborate boxes on screen, for embellishing menus and
-other bits of dialog. I have only experimented with this a very little.
-
-\subsection{User Help}
-There is a good deal of room for improvement in the amount and
-kind of help information available to the user from within \tex/.
-Help information provided externally through general help facilities
-such as Unix man pages is well and good, but any help system
-that's not \tex/-based has one disadvantage: lack of
-portability across the whole spectrum of computer systems that
-can run \tex/.
-
-\begin{itemize} \item Any program should have an announcement near
-the beginning of how to quit without destructive side effects; for
-\tex/ this means, among other things, that each version of the \tex/
-program should have in its opening message instructions on how to
-break out of an infinite loop or in general how to interrupt \tex/
-before it has finished its current run. In {\it Textures\/} this
-requirement is satisfied by the `Pause' button, always visible. In
-DOS versions of \tex/ the interrupt key is normally the
-Control-Break or Control-C key (depending partly on the particular implementation
-of \tex/); in VAX/VMS it is Control-C or Control-Y, with the latter
-reserved for emergency use only, since it will leave you without a
-log file for reference.
-
-\item Response to the prompt
-\[\parbox{.9\columnwidth}{\tt\raggedright
-I can't find file xxx. Please type another input file name:\endgraf}\]
-The novice user should be able to type the
-reasonable guesses \fn{help} and \fn{h} and \fn{?}; the easiest way
-to do this would be to put files \fn{help.tex}, \fn{h.tex} or
-\fn{?.tex} in the \tex/ inputs directory/folder/area. (Except that
-many OS's don't allow \fn{?.tex} as a file name). Already many
-systems have a file \fn{null.tex} or \fn{nul.tex} to allow you to
-abort reasonably gracefully if you know enough to enter {\tt null} or
-{\tt nul} in response to the prompt. Very
-few \tex/ users, however, will ever think of entering \fn{nul} without reading
-about it in the documentation or hearing about it from a more
-experienced user.
-
-\item Some of \tex/'s {\em built-in\/} error/help messages are
-specific to \fn{plain.tex}. Some big macro packages such as \latex/
-might prefer to change some of the wording at least. For example,
-there are references in some of \tex/'s compiled-in help messages to
-things like \cw{def} and \cw{eqalign} that are documented nowhere in
-the \latex/ book. And if you press \return/ at a \verb'*' prompt after
-getting into \tex/'s interactive mode (intentionally or accidentally),
-\tex/ urges you to enter a command or type \cw{end}---the latter being
-worse than useless in \latex/ (where \cw{stop} or
-\verb|\end{document}| are what is required): after typing \cw{end} and
-\return/, nothing happens because \latex/ is waiting for the argument
-of the \cw{end} command.
-
-\item Long help and error messages use string pool and main memory.
-Storing them in external files would provide more space (at the cost
-of slower access; but of course, once you get an error message,
-processing speed is scarcely relevant any longer).
-
-\end{itemize}
-
-\section{Summary}
-
-\subsection{Sending messages}
-
-Recommendations: Until versions of \tex/ earlier than 3.141 are
-sufficiently phased out, you had better use \cw{immediate}\cw{write}
-rather than \cw{message} for generic message-sending macros, so that
-all ``printable'' characters remain available for use in the message
-text. Use \cw{message} instead of \cw{immediate}\cw{write} for
-producing a prompt if you want the user's response to appear on the
-same line. Uncatcode all special characters while constructing the
-text of a message, if the message text is completely invariant between
-one use and the next. Use \cw{string} if you don't want a space after
-a control word, and use \cw{noexpand} if you do want a space.
-
-\subsection{Reading user input}
-
-Recommendations: Set the catcode of \cw{endlinechar} temporarily to
-$9$ while reading a response, to avoid getting an extra space at the
-end from the \ctrl{M}. Uncatcode all special characters, especially
-opening and closing braces. If it is not uncatcoded, remove the
-outerness from \verb;^^L;, at least while reading a user response, and
-similarly, if the backslash is not uncatcoded and you want to be
-supremely cautious, remove the outerness from any other outer control
-sequences (\eg., \cw{newif}) if they might reasonably, or even
-unreasonably, turn up in a user's response.
-
-\begin{thebibliography}{x}
-
-\bibitem[Cowan, 1987]{tables} Cowan, Ray. \fn{tables.sty}. 1987. This is
-derived from \fn{tables.tex}; I found it at
-\fn{sun\-.soe\-.clarkson\-.edu}, directory: \fn{pub\slash tex\slash
-latex-style}.
-
-\bibitem[Greene, 1989]{animals} Greene, Andrew Marc.
-``\tex/reation\Dash Playing games with \tex/'s mind.''
-\tugboat/ 10(4), pages 691\dash 705, 1989. Includes a listing
-of \fn{animals.tex}.
-
-\bibitem[Greene, 1990]{basix} Greene, Andrew Marc.
-``BaSiX: An interpreter written in \tex/.'' \tugboat/ 11(3),
-pages 381\dash 392, 1990.
-
-\bibitem[Hamilton Kelly, 1991]{checknum}
-{Hamilton Kelly}, Brian. \fn{checknum.sty}. {\it UK\tex/}
-91(1), 4 January 1991.
-
-\bibitem[Knuth, 1986b]{TeX} Knuth, Donald E. {\sl \tex/: The program}.
-Reading, Mass.: Addison-Wesley, 1986.
-
-\bibitem[Knuth, 1986c]{testfont} Knuth, Donald E. \fn{testfont.tex}.
-{\sl The META\-FONT\-book}, Appendix H, section 4. Reading, Mass.:
-Addison-Wesley, 1986. This file is included in all standard
-distributions of \mf/.
-
-\bibitem[Lamport, 1985]{latex} Lamport, Leslie. \fn{latex.tex}.
-Version 2.09 (1985--1992). Main source file for \latex/, included with
-any standard distribution.
-
-\bibitem[Mattes, 1992]{emtex} Mattes, Eberhard.
-em\tex/. Version 3.1415.
-A comprehensive suite of programs including \tex/,
-\mf/, printer drivers, previewers, Bib\tex/, \dots.
-Available by anonymous ftp from \fn{niord.shsu.edu} (USA) or
-\fn{ftp.uni-stuttgart.de} (Europe) and other fine archives.
-
-\bibitem[Mittelbach, 1991]{docstrip} Mittelbach, Frank.
-\fn{docstrip.tex}. Version 1.1l, 1991. This file is part of the
-\fn{multicol} package available by anonymous FTP from many archives,
-including \fn{ftp.uni-stuttgart.de} and
-\fn{ymir.claremont.edu}.
-
-\end{thebibliography}
-
-\appendix
-\renewcommand{\thesection}{Appendix \Alph{section}}
-\renewcommand{\thesubsection}{\Alph{section}.\arabic{subsection}}
-
-\section{Animals.tex}
-This I have cleaned up a bit by making uppercase and lowercase
-responses equally acceptable, and by making a loop so that
-you can repeat the game without restarting \tex/ each time.
-Source credit is in the bibliography \cite{animals}.
-
-\subsection{animals.tex}
-\verbatiminput{animals.tex}
-
-\subsection{animals2.tex}
-
-\verbatiminput{animals2.tex}
-
-\subsection{animal.dat}
-A typical file \fn{animal.dat} is shown here, in part. But the nature
-of the game is for you to create your own version of this file based
-on the answers that you give while playing.
-\begin{verbatim}
-1
-Does it have four legs?
-2
-3
-2
-Is it an amphibian?
-4
-5
-3
-Does it have six legs?
-6
-7
-4
-Does it have a tail?
-36
-37
-5
-Is it a big kind of cat?
-10
-11
-6
-Does it have big hind legs used for jumping?
-40
-41
-7
-Is it a fish?
-8
-9
-8
-...
-\end{verbatim}
-
-\section{Basix.tex}
-
-Another effort by Andrew Marc Greene, with clear relevance to the
-subject of dialog in \tex/, is his prototype Basic interpreter
-described in \cite{basix}. I had planned to give here a closer study
-of the dialog concepts used by \fn{basix.tex} but it seems I will not
-have enough time.
-
-\section{Tables.tex}
-
-The file \fn{tables.tex} \cite{tables}
-provides table macros with the unique property that a preamble
-line specifying the format of each row is not required; the
-format is determined automatically by an analysis of the table
-contents. The dialog part consists of a message such as
-\begin{verbatim}
-[Nrows=9, Ncols=2]
-\end{verbatim}
-that is printed on screen for each table. This provides confirmation
-at run-time for the user of the general structure of each table.
-In the worst case, if the number of rows or columns is
-wildly wrong, the user can press the interrupt
-key and go fix up the table before trying again.
-
-\section{Fontmenu.tex}\label{a:menu}
-
-The file \fn{fontmenu.tex} demonstrates a crude menu system based on
-the token deletion option after an error message. There are five
-tokens \cw{ComputerModern}, \cw{Garamond}, etc., corresponding to the
-five font choices. They are so defined and arranged that if the user
-enters, say, 2 to select Garamond fonts, then the deletion of two
-tokens will leave the \cw{Garamond} token showing on screen (as the
-last token deleted by the user), and then the next token
-(\cw{Helvetica}) will define the font base to be `Garamond' and gobble
-the remainder of the list. The effect of this arrangement is that the
-user sees the '\cw{Garamond}' on screen as a confirmation of their
-selection after they enter the number and before they press the
-\return/ key a second time.
-
-\verbatiminput{fontmenu.tex}
-
-And here is screen output of a typical run through \fn{fontmenu.tex}:
-
-\verbatiminput{fontmenu.log}
-
-\ifdim\textwidth>\textheight
-\typeout{^^J%
-*******************************************************************^^J%
-[*[*[*[*[ DON'T FORGET: print using LANDSCAPE orientation ]*]*]*]*]^^J%
-*******************************************************************^^J%
-}
-\fi
-
-\end{document}
diff --git a/Master/texmf-dist/doc/latex/dialogl/dia-driv.dvi b/Master/texmf-dist/doc/latex/dialogl/dia-driv.dvi
deleted file mode 100644
index 7563e972739..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/dia-driv.dvi
+++ /dev/null
Binary files differ
diff --git a/Master/texmf-dist/doc/latex/dialogl/dia-driv.tex b/Master/texmf-dist/doc/latex/dialogl/dia-driv.tex
deleted file mode 100644
index ed4d83d1c9d..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/dia-driv.tex
+++ /dev/null
@@ -1,246 +0,0 @@
-%%% ====================================================================
-%%% @LaTeX-file{
-%%% filename = "dia-driv.tex",
-%%% version = "1.0h",
-%%% date = "2-Dec-1994",
-%%% time = "15:21:37 EST",
-%%% checksum = "35247 246 1122 9059",
-%%% author = "Michael Downes",
-%%% address = "49 Weeks Street
-%%% North Smithfield, RI 02986, USA",
-%%% email = "mjd@math.ams.org (Internet)",
-%%% docstring = "The checksum field above contains: CRC-16
-%%% checksum, number of lines, number of words, and number of
-%%% characters, as produced by Robert Solovay's checksum utility.",
-%%% }
-%%% ====================================================================
-%
-% Originally published in TUGboat with ltugboat documentstyle.
-% Switched to generic article/twocolumn afterward.
-\documentstyle[doc,dialogl]{article}
-
-\title{Interaction tools: {\tt dialog.sty} and {\tt menus.sty}}
-\author{Michael Downes}
-%\address{49 Weeks Street\\North Smithfield, RI 02895\\U.S.A}
-%\netaddress{mjd@math.ams.org}
-\date{November 3, 1994}
-
-\hyphenation{pro-duces}
-
-\renewcommand{\thepart}{\arabic{part}}
-\renewcommand{\thesection}{\thepart.\arabic{section}}
-
-% Some customizations of doc.sty parameters.
-\def\PrintMacroName#1{}
-%
-%\renewcommand{\PrintDescribeMacro}[1]{}
-%\renewcommand{\PrintDescribeEnv}[1]{}
-
-\setlength{\MacroIndent}{0pt}
-\def\MacroFont{\verbatimfont}% doc.sty uses \MacroFont
-
-% No modules in the files to be processed; so don't bother checking.
-\DontCheckModules
-
-\multicoldefaultlayout
-\begin{document}
-\jobswitch % print only selected parts if \jobname so indicates; see
- % dialogl.sty
-\maketitle
-\thispagestyle{empty}
-
-\begin{multicols}{2}
-\section*{Introduction}
-
-\ifall
-This article describes
-\fn{dialog.sty} and \fn{menus.sty}, which
-provide functions for printing messages or menus on screen and reading
-users' responses. The file \fn{dialog.sty} contains basic message and
-input-reading functions; \fn{menus.sty} takes \fn{dialog.sty} for its
-base and uses some of its functions in defining more complex menu
-construction functions. These two files are set up in the form of
-\LaTeX{} documentstyle option files, but in writing them I spent some
-extra effort to try to make them usable with \plaintex/ or other
-common macro packages that include \plaintex/ in their base, such as
-\AmSTeX{} or \eplain/.
-
-The appendix describes \fn{grabhedr.sty}, required by \fn{dialog.sty},
-which provides two useful file-handling features: (1)~a command
-\cw{inputfwh} that when substituted for \cw{input} makes it possible to
-grab information such as file name, version, and date from standardized
-file headers in the style promoted by Nelson Beebe\Dash and to grab it
-in the process of first inputting the file, as opposed to inputting the
-file twice, or \cw{read}ing the information separately (unreliable due
-to system-dependent differences in the equivalence of \tex/'s \cw{input}
-search path and \cw{openin} search path). And (2)~functions
-\cw{localcatcodes} and \cw{restorecatcodes} that make it possible for
-\fn{dialog.sty} (or any file) to manage internal catcode changes
-properly regardless of the surrounding context.
-
-These files and a few others are combined in
-\else
-This package is part of
-\fi
-a suite of files that goes
-by the name of {\bf dialogl}, available on the Internet by anonymous ftp
-from CTAN (Comprehensive \tex/ Archive Network), e.g., \fn{ftp.shsu.edu}
-(USA), or \fn{ftp.uni-stuttgart.de} (Europe).
-%
-\ifall
-The file \fn{listout.tex} is a utility for verbatim printing of plain
-text files, with reasonably good handling of overlong lines, tab
-characters, other nonprinting characters, etc. It uses \fn{menus.sty} to
-present an elaborate menu system for changing options (like font size,
-line spacing, or how many spaces should be printed for a tab character).
-\else
-It includes the packages \pkg{dialog}, \pkg{menus}, and \pkg{grabhedr}
-and a utility file \fn{listout.tex} for verbatim printing of plain text
-files.
-\fi
-
-\ifmenus
-Here's an example from the menu system of \fn{listout.tex} to
-demonstrate the use of some features from \fn{dialog.sty} and
-\fn{menus.sty}. First, the menu that you would see if you wanted to
-change the font or line spacing:
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% This funny way of calling \samepage is (I think) the most
-% convenient way to avoid turning off page breaks for the preceding
-% paragraph.
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\def\next{\begin{verbatim}\samepage}\next
-===============================================
- F Change font
- S Change font size
- L Change line spacing
-
-Current settings: typewriter 8 / 10.0pt.
-
- Q Quit X Exit ? Help
-===============================================
-
-Your choice?
-\end{verbatim}
-Suppose you wanted to change line spacing to 9 points, so you entered
-\qc{\l} (lowercase \qc{\L}) and then \verb'9pt', except that on your
-first attempt you accidentally mistyped \verb'9pe' instead of
-\verb'9pt'. Here's what you would see on screen:
-\begin{verbatim}
-Your choice? l
-Desired line spacing [TeX units] ? 9pe
-?---I don't understand "9pe".
-Desired line spacing [TeX units] ? 9pt
-
-* New line spacing: 9.0pt
-\end{verbatim}
-Both lowercase \verb'l' and capital \verb'L' are acceptable responses,
-and the value given for line spacing is checked to make sure it's a
-valid \tex/ dimension. Before continuing, the internalized version of
-the user's value is echoed on screen to confirm that the entered value
-was read correctly.
-
-Now here's how the above menu is programmed in \fn{listout.tex}.
-A function \cw{menuF} is constructed using \cw{fxmenu}:
-\begin{verbatim}
-\fxmenu\menuF{}{
-F Change font
-S Change font size
-L Change line spacing
-}{
-Current settings: &\mainfont &\mainfontsize / %
-&\the&\normalbaselineskip.
-}
-%
-\def\moptionF{\lettermenu F}
-\end{verbatim}
-In the definition of \cw{moptionF}, \cw{lettermenu} is a high-level
-function from \fn{menus.sty} that prints \cw{menuF} on screen (given
-the argument \verb'F'), reads a line of input from the user, extracts
-the first character and forces it to uppercase, then branches to
-the next menu as determined by that character. The response of
-\verb'l' causes a branch to the function \cw{moptionFL}:
-\begin{verbatim}
-\def\moptionFL{%
- \promptmesj{%
- Desired line spacing [TeX units] ? }%
- \readline{Q}\reply
-\end{verbatim}
-If \verb'Q', \verb'X', or \verb'?' was entered, the test
-\cw{xoptiontest} will return `true'; then we should skip the dimension
-checking and go directly to \cw{optionexec}, which knows what to do
-with those responses:
-\begin{verbatim}
- \if\xoptiontest\reply
- \else
-\end{verbatim}
-Otherwise we check the given dimension to make sure it's usable. If so,
-echo the new value as confirmation.
-\begin{verbatim}
- \checkdimen\reply\dimen@
- \ifdim\dimen@>\z@
- \normalbaselineskip\dimen@\relax
- \normalbaselines
- \confirm{New line spacing:
- \the\normalbaselineskip}%
- \def\reply{Q}%
- \fi
-\end{verbatim}
-If \cw{reply} was changed to \verb'Q' during the above step,
-\cw{optionexec} will pop back up to the previous menu level (normal
-continuation); otherwise \cw{reply} retains its prior definition\Dash
-e.g., \verb'9pe'\Dash to which \cw{optionexec} will simply say ``I
-don't understand that'' and repeat the current prompt.
-\begin{verbatim}
- \fi
- \optionexec\reply
-}
-\end{verbatim}
-
-For maximum portability, \fn{listout.tex} uses in its menus only
-lowest-common-denominator ordinary printable ASCII characters in the
-range 32\dash 126. Fancier menus can be obtained at a cost of forgoing
-system independence, for instance by using em\tex/'s \verb'/o' option
-to output the box-drawing characters in the standard PC DOS character
-set.
-\fi
-
-\subsection*{Notation}
-
-Double-hat notation such as \verb'^^J' is used herein for
-control characters, as in \TB{}, although occasionally the alternate
-form `{\sc control}-J' is used when the emphasis is away from the
-character's tokenized state inside \tex/. A couple of abbreviations
-from \fn{grabhedr.sty} are used frequently in the macro code: \cw{xp@}
-= \cw{expandafter}, and \cw{nx@} = \cw{noexpand}. Standard
-abbreviations from \fn{plain.tex} such as \cw{z@} or \cw{toks@} are
-used without special comment.
-
-\ifall
-\part{Basic dialog functions: \fn{dialog.sty}}
-\fi
-\ifdialog\hDocInput{dialog.dtx}\fi
-
-\ifall
-\part{Menu functions: \fn{menus.sty}}
-\setcounter{section}{0}
-\fi
-\ifmenus\hDocInput{menus.dtx}\fi
-
-\ifall
-% It's hard to make this part title come out right without assuming
-% \partname is defined.
-\part*{Appendix\penalty-10000
-Miscellaneous support functions:
-\fn{grabhedr.sty}}
-\setcounter{section}{0}
-\renewcommand{\thepart}{A} % for use in \thesection
-\fi
-\ifgrabhedr\hDocInput{grabhedr.dtx}\fi
-
-\end{multicols}
-
-\ifdim\textwidth>\textheight
-\typeout{^^JWarning: remember to print using LANDSCAPE orientation^^J}
-\fi
-\end{document}
diff --git a/Master/texmf-dist/doc/latex/dialogl/diatest.tex b/Master/texmf-dist/doc/latex/dialogl/diatest.tex
deleted file mode 100644
index 4310bf1d6b6..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/diatest.tex
+++ /dev/null
@@ -1,162 +0,0 @@
-% Test of the `menus' package. You can run this file with (at least)
-% plain TeX, LaTeX (2e), and old LaTeX (2.09).
-%
-% Some chicanery to make this file work in several different contexts.
-\ifx\undefined\documentclass
- \def\NeedsTeXFormat#1{}\def\RequirePackage#1{\input #1.sty \relax}
- \def\ProvidesPackage#1[#2]{}
- \ifx\undefined\documentstyle
- \def\startup{\input menus.sty \relax}
- \else
- \def\startup{\documentstyle[menus]{article}}
- \fi
-\else
- \def\startup{%
- \documentclass{article}%
- \usepackage{menus}%
- }
-\fi
-
-\startup
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\mesj{
-The following series of tests is designed to cover most of the
-features that are provided by dialog.sty. If you compare what you
-see on screen with the contents of the file diatest.tex you will
-see how they correspond.
-
-Press the Return or Enter key to continue:}
-\readline{}\xyz
-
-\promptmesj{
-
-Testing \mesj:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\mesj{Give ~ me %^^L an &|
- \newif #}
-
-\promptmesj{
-Testing \xmesj:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\xmesj{Do we have \{\}\\ characters?
-And \iftrue\.true\else\.false\fi.
-Not to mention ampersand \&, since \string\iftrue.}
-
-\promptmesj{
-Testing \xmesj inside of a \def:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\def\next{\xmesj{Abc space:\ , control-M: \^^M, and percent:\%\
-and another line break.}}
-\next
-
-\promptmesj{
-Testing \promptmesj:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\promptmesj{Enter this or that: }
-\readline{}\xyz
-
-\promptmesj{
-Testing \storemesj:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\storemesj\foo{This is a fine old message, isn't it?:
-\mesj{Give ~ me %^^L an &|
- \newif }}
-\xmesj{\foo}
-
-\promptmesj{
-Testing \storexmesj now with an arg:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\storexmesj\foo#1{This is a fine old message, isn't it?:
-\\mesj{Give ~ me \%^^L an \&|#1
- \\newif \#}}
-\xmesj{\foo{KABLOO}}
-
-\promptmesj{
-Testing \fmesj:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\fmesj\foo{This is a fine old message, isn't it?:
-\mesj{Give ~ me %^^L an &|
- \newif}}
-\foo
-
-\promptmesj{
-Testing \fxmesj now with an arg:
-Press return to continue: }
-\readline{}\xyz\mesj{}
-\fxmesj\foo#1{This is a fine old message, isn't it?:
-\\mesj{Give ~ me \%^^L an \&|#1
- \\newif \#}}
-\foo{KABLOO}
-
-\promptmesj{
-Would you like to try out \readline? [yes or no]: }
-\readline{}\answer
-\xmesj{Well, if I understood you correctly, you answered `\answer'}
-
-\promptmesj{
-OK, now try give me an executable answer, such as
-"\iftrue yes\else no\fi": }
-\xreadline{}\answer
-\xmesj{Well, and now if I try to execute that: "\answer"}
-
-\promptmesj{
-OK, now let's try \readchar. Give me an arbitrary answer of
-one or more characters: }
-\readchar{}\answer
-\xmesj{Taking the first character from your answer, I get: "\answer"}
-
-\promptmesj{
-OK, now let's try \readChar. Give me an arbitrary answer of
-one or more letters: }
-\readChar{}\answer
-\xmesj{Taking the first character from your answer, and
-uppercasing it, I get: "\answer"}
-
-\promptmesj{
-OK, give me a number then, so that I can
-check it with \checkinteger: }
-\readline{}\answer
-\checkinteger\answer\fam
-\xmesj{\ifnum\fam=-\maxdimen%
-Gee, I don't think that was\else\.Got\fi%
- a valid number: "\answer"}
-
-\def\dimtest#1{\promptxmesj{#1}%
- \readline{}\answer
- \ifx\empty\answer
- \else
- \checkdimen\answer\vfuzz
- \ifdim\vfuzz=-\maxdimen%
- \xmesj{Sorry, that doesn't look like a TeX dimen to me: "\answer"}%
- \else
- \xmesj{Looks like a valid TeX dimen: "\answer" = \the\vfuzz}%
- \fi
- \expandafter\dimtestb
- \fi
-}
-
-\def\dimtesta{\dimtest{\
-OK, give me a dimen then, so that I can\
-check it with \\checkdimen:\
-}}
-
-\def\dimtestb{\dimtest{\
-How about another dimen: }}
-
-\def\empty{}
-
-% Iterate once with one prompt, then several times with a shorter
-% prompt.
-\dimtesta
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\csname stop\endcsname
-\end
diff --git a/Master/texmf-dist/doc/latex/dialogl/fontmenu.tex b/Master/texmf-dist/doc/latex/dialogl/fontmenu.tex
deleted file mode 100644
index 575a8344f3e..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/fontmenu.tex
+++ /dev/null
@@ -1,67 +0,0 @@
-\def\ComputerModern{\gdef\fontbase{Times}\gobble}
-\def\Garamond{\gdef\fontbase{Computer Modern}\gobble}
-\def\Helvetica{\gdef\fontbase{Garamond}\gobble}
-\def\Malibu{\gdef\fontbase{Helvetica}\gobble}
-\def\Times{\gdef\fontbase{Malibu}\gobble}
-
-\def\gobble#1\endgobble{}
-
-% Make sure we have a reasonable \newlinechar
-\newlinechar=`\^^J \catcode\newlinechar=12
-
-\begingroup
-\catcode`\<=1 \catcode`\ =2\relax
-\gdef\menustart{\errmessage<%
-....................................... }%
-\endlinechar\newlinechar\catcode`\ =12\relax
-\gdef\menutext{
- .......................................
- .......................................
-
- Select the font base you wish to use:
-
- [1] Computer Modern [4] Malibu
- [2] Garamond [5] Times
- [3] Helvetica
-
- (Default: Times)}%
-\endgroup% percent here to avoid extra \newlinechar
-
-\begingroup
-\immediate\write16{\menutext}
-% If the user accidentally types 33 instead of 3 they will get past
-% all the legitimate menu choices. So to keep that from causing
-% trouble, we throw in a bunch of ~ characters below to perform
-% error recovery. The standard maximum number of tokens that TeX
-% will delete at one time is 99.
-\catcode`\~=\active % just to make sure
-\def~{\newlinechar`\^^J% restore normal value
- \message{%
-Whoops! Well, you got Times as your font base, I think}%
- \gobble}
-% Minimize unwanted error context (note: setting
-% this to -1 doesn't suppress any more information)
-\errorcontextlines 0
-\newlinechar=`\! % to hide the automatic ! from \errmessage
-\gdef\fontbase{Times}
-% Inside the next group we make the space character
-% active so that we can use it to call \menustart,
-% and then we use \expandafter so that the first
-% space on the next line gets that catcode before
-% the \endgroup makes it revert to normal. All this
-% so that the user does not see `\menustart' on
-% screen, only a space.
-\begingroup
-\catcode`\ =\active\let =\menustart\expandafter\endgroup%
- % Enter a number (1...5) and press Return TWICE
-\ComputerModern% Press Return to continue
-\Garamond% Press Return to continue
-\Helvetica% Press Return to continue
-\Malibu% Press Return to continue
-\Times% Press Return to continue
-\gobble%
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
-\endgobble\endgroup%
-\show\fontbase
-\end
diff --git a/Master/texmf-dist/doc/latex/dialogl/listout.tex b/Master/texmf-dist/doc/latex/dialogl/listout.tex
deleted file mode 100644
index 9e225ebd058..00000000000
--- a/Master/texmf-dist/doc/latex/dialogl/listout.tex
+++ /dev/null
@@ -1,3130 +0,0 @@
-%%
-%% This is file `listout.tex',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% grabhedr.dtx
-%% dialog.dtx
-%% menus.dtx
-%% listout.dtx
-
-%%% ====================================================================
-%%% @LaTeX-style-file{
-%%% filename = "grabhedr.sty",
-%%% version = "0.9j",
-%%% date = "1994/11/08",
-%%% time = "16:15:00 EST",
-%%% author = "Michael Downes",
-%%% email = "mjd@math.ams.org (Internet)",
-%%% keywords = "TeX, file header,
-%%% supported = "yes",
-%%% abstract = "This file defines a function \inputfwh
-%%% to be used instead of \input, to allow TeX to grab
-%%% information from standardized file headers in the form
-%%% proposed by Nelson Beebe during his term as president of the
-%%% TeX Users Group. Of which all this here is an example.",
-%%% checksum = "60397 519 2589 19482",
-%%% docstring = "The checksum field above contains a CRC-16
-%%% checksum as the first value, followed by the equivalent of
-%%% the standard UNIX wc (word count) utility output of lines,
-%%% words, and characters. This is produced by Robert Solovay's
-%%% checksum utility.",
-%%% }
-%%% ====================================================================
-\begingroup
-\catcode96 12 % left quote
-\catcode`\= 12
-\catcode`\{=1 \catcode`\}=2 \catcode`\#=6
-\catcode`\$=3 \catcode`\~=13 \catcode`\^=7
-\catcode`\_=8 \catcode`\^^M=5 \catcode`\"=12
-\catcode`\@=11
-\gdef\@empty{}
-\long\gdef\@gobble#1{}
-\long\gdef\@gobbletwo#1#2{}
-\long\gdef\@gobblethree#1#2#3{}
-\long\gdef\@car#1#2\@nil{#1}
-\ifx\UndEFiNed\@@input % LaTeX not loaded.
- \edef\0{\meaning\input}\edef\1{\string\input}%
- \ifx\0\1%
- \global\let\@@input\input
- \else
- \errhelp{%
-Grabhedr.sty needs to know the name of the
-\input primitive in order to define \inputfwh
-properly. Consult a TeXnician for help.}
- \errmessage{%
- Non-primitive \noexpand\input detected}%
- \fi
-\fi
-\global\toksdef\toks@=0
-\long\gdef\afterfi#1\fi{\fi#1}
-\global\let\nx@\noexpand
-\global\let\xp@\expandafter
-\begingroup \lccode`\.=`\%%
-\lowercase{\gdef\@percentchar{.}}%
-\endgroup
-\gdef\fileversiondate#1#2#3{%
- \xp@\xdef\csname#1\endcsname{#2 (#3)}%
- \def\filename{#1}\def\fileversion{#2}%
- \def\filedate{#3}%
- \message{#1 \csname#1\endcsname}%
-}
-\xdef\@filehdrstart{%
- \@percentchar\@percentchar\@percentchar\space
- ==================================%
- ==================================}
-\gdef\@scanfileheader#1@#2#{\@xscanfileheader}
-\long\gdef\@xscanfileheader#1{%
- \@yscanfileheader#1{} version = "??",
- date = "??",\@yscanfileheader}
-\long\gdef\@yscanfileheader
- #1 filename = "#2",#3 version = "#4",%
- #5 date = "#6",#7\@yscanfileheader{%
- \endgroup
- \csname fileversiondate\endcsname{#2}{#4}{#6}%
-}
-\begingroup
-\lccode`\$=`\^^M
-\lowercase{\gdef\@readfirstheaderline#1$}{%
- \toks@{#1}%
- \edef\@tempa{\@percentchar\the\toks@}%
- \ifx\@tempa\@filehdrstart
- \endgroup \begingroup
- \catcode`\%=9 \catcode`\^^M=5 \catcode`\@=11
- \catcode`\ =10 \catcode`\==12 \catcode`\"=12
- \xp@\@scanfileheader
- \else
- \message{(* Missing file header? *)}%
- \afterfi\endgroup
- \fi}
-\endgroup
-\gdef\@xinputfwh{%
- \ifx\next\@readfirstheaderline
- \catcode`\%=12 \catcode`\{=12 \catcode`\}=12
- \catcode`\\=12 \catcode`\^^L=12
- \catcode`\^=12
- \catcode`\^^M=3\relax
- \else \endgroup\fi
-}
-\gdef\@inputfwh{\futurelet\next\@xinputfwh}
-\gdef\inputfwh#1{%
- \begingroup\catcode`\%=\active
- \endlinechar`\^^M\relax
- \lccode`\~=`\%\relax
- \lowercase{\let~}\@readfirstheaderline
- \xp@\@inputfwh\@@input #1\relax
-}
-\gdef\localcatcodes#1{%
- \ifx\@empty\@catcodestack
- \gdef\@catcodestack{{}}%
- \fi
- \def\do##1##2{%
- \ifnum##2>\z@
- \catcode\number`##1 \space
- \number\catcode`##1\relax
- \expandafter\do\fi}%
- \xdef\@catcodestack{{\do#1\relax\m@ne}%
- \@catcodestack}%
- \def\do##1##2{\catcode`##1 ##2\relax\do}%
- \do#1\ {\catcode32\let\do}%
-}
-\gdef\@catcodestack{{}}
-\gdef\restorecatcodes{%
- \begingroup
- \ifx\@empty\@catcodestack
- \errmessage{Can't pop catcodes;
- \nx@\@catcodestack = empty}%
- \endgroup
- \else
- \def\do##1##2\do{%
- \gdef\@catcodestack{##2}%
- \endgroup##1}%
- \xp@\do\@catcodestack\do
- \fi
-}
-\expandafter\gdef\csname trap.input\endcsname
- \input#1 \relax{%
- \expandafter\ifx\csname#1\endcsname\relax
- \afterfi\inputfwh{#1}\relax
- \fi}
-\endgroup
-%%% ====================================================================
-%%% @LaTeX-style-file{
-%%% filename = "dialog.sty",
-%%% version = "0.9y",
-%%% date = "1994/11/08",
-%%% time = "13:31:30 EST",
-%%% checksum = "20801 1436 7278 54732",
-%%% author = "Michael Downes",
-%%% email = "mjd@math.ams.org (Internet)",
-%%% codetable = "ISO/ASCII",
-%%% keywords = "TeX, dialog",
-%%% supported = "yes",
-%%% abstract = "This file provides functions for writing
-%%% messages and menus on screen, and reading user responses. It
-%%% can be used with LaTeX as a documentstyle option, or in
-%%% other forms of TeX by a standard \input statement.",
-%%% docstring = "The checksum field above contains a CRC-16
-%%% checksum as the first value, followed by the equivalent of
-%%% the standard UNIX wc (word count) utility output of lines,
-%%% words, and characters. This is produced by Robert Solovay's
-%%% checksum utility.",
-%%% }
-%%% ====================================================================
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% The line break is significant here:
-\localcatcodes{\@{11}\ {10}\
-{5}\~{13}\"{12}\#{6}\^{7}\`{12}}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begingroup
-\def\do{12 \catcode`}
-\catcode`\~\do\!\do\@\do\#\do\$\do\^\do\&
-\do\*\do\(\do\)\do\-\do\_\do\=\do\[\do\]
-\do\;\do\:\do\'\do\"\do\<\do\>\do\,\do\.
-\do\/\do\?\do\|12\relax
-\escapechar -1
-\edef\\{\string\\}
-\edef\{{\string\{}\edef\}{\string\}}
-\catcode`\ =12\catcode`\%=12
-\xdef\otherchars
-{ !"#$%&'()*+,-./:;<=>?[\\]^_`\{|\}~}
-\endgroup % ^ ^ ^
-\begingroup
-\endlinechar = -1
-\def\do{12 \catcode`}
-\catcode`\^^@\do\^^A\do\^^B\do\^^C
-\do\^^D\do\^^E\do\^^F\do\^^G\do\^^H\do\^^I
-\do\^^J\do\^^K\do\^^L\do\^^M\do\^^N\do\^^O
-\do\^^P\do\^^Q\do\^^R\do\^^S\do\^^T\do\^^U
-\do\^^V\do\^^W\do\^^X\do\^^Y\do\^^Z\do\^^[
-\do\^^\\do\^^]\do\^^^\do\^^_\do\^^? 12\relax
-\gdef\controlchars{^^@^^A^^B^^C^^D^^E^^F^^G
- ^^H^^I^^J^^K^^L^^M^^N^^O^^P^^Q^^R^^S^^T
- ^^U^^V^^W^^X^^Y^^Z^^[^^\^^]^^^^^_^^?}
-\endgroup
-\begingroup
-\def\do{12 \catcode`}
-\catcode`\^^80\do\^^81\do\^^82\do\^^83\do\^^84
-\do\^^85\do\^^86\do\^^87\do\^^88\do\^^89\do\^^8a
-\do\^^8b\do\^^8c\do\^^8d\do\^^8e\do\^^8f
-\do\^^90\do\^^91\do\^^92\do\^^93\do\^^94\do\^^95
-\do\^^96\do\^^97\do\^^98\do\^^99\do\^^9a\do\^^9b
-\do\^^9c\do\^^9d\do\^^9e\do\^^9f
-\do\^^a0\do\^^a1\do\^^a2\do\^^a3\do\^^a4\do\^^a5
-\do\^^a6\do\^^a7\do\^^a8\do\^^a9\do\^^aa\do\^^ab
-\do\^^ac\do\^^ad\do\^^ae\do\^^af
-\do\^^b0\do\^^b1\do\^^b2\do\^^b3\do\^^b4\do\^^b5
-\do\^^b6\do\^^b7\do\^^b8\do\^^b9\do\^^ba\do\^^bb
-\do\^^bc\do\^^bd\do\^^be\do\^^bf
-\do\^^c0\do\^^c1\do\^^c2\do\^^c3\do\^^c4\do\^^c5
-\do\^^c6\do\^^c7\do\^^c8\do\^^c9\do\^^ca\do\^^cb
-\do\^^cc\do\^^cd\do\^^ce\do\^^cf
-\do\^^d0\do\^^d1\do\^^d2\do\^^d3\do\^^d4\do\^^d5
-\do\^^d6\do\^^d7\do\^^d8\do\^^d9\do\^^da\do\^^db
-\do\^^dc\do\^^dd\do\^^de\do\^^df
-\do\^^e0\do\^^e1\do\^^e2\do\^^e3\do\^^e4\do\^^e5
-\do\^^e6\do\^^e7\do\^^e8\do\^^e9\do\^^ea\do\^^eb
-\do\^^ec\do\^^ed\do\^^ee\do\^^ef
-\do\^^f0\do\^^f1\do\^^f2\do\^^f3\do\^^f4\do\^^f5
-\do\^^f6\do\^^f7\do\^^f8\do\^^f9\do\^^fa\do\^^fb
-\do\^^fc\do\^^fd\do\^^fe\do\^^ff 12\relax
-\gdef\highchars{%
-^^80^^81^^82^^83^^84^^85^^86^^87^^88%
-^^89^^8a^^8b^^8c^^8d^^8e^^8f%
-^^90^^91^^92^^93^^94^^95^^96^^97^^98%
-^^99^^9a^^9b^^9c^^9d^^9e^^9f%
-^^a0^^a1^^a2^^a3^^a4^^a5^^a6^^a7^^a8%
-^^a9^^aa^^ab^^ac^^ad^^ae^^af%
-^^b0^^b1^^b2^^b3^^b4^^b5^^b6^^b7^^b8%
-^^b9^^ba^^bb^^bc^^bd^^be^^bf%
-^^c0^^c1^^c2^^c3^^c4^^c5^^c6^^c7^^c8%
-^^c9^^ca^^cb^^cc^^cd^^ce^^cf%
-^^d0^^d1^^d2^^d3^^d4^^d5^^d6^^d7^^d8%
-^^d9^^da^^db^^dc^^dd^^de^^df%
-^^e0^^e1^^e2^^e3^^e4^^e5^^e6^^e7^^e8%
-^^e9^^ea^^eb^^ec^^ed^^ee^^ef%
-^^f0^^f1^^f2^^f3^^f4^^f5^^f6^^f7^^f8%
-^^f9^^fa^^fb^^fc^^fd^^fe^^ff}
-\endgroup
-\def\actively#1#2{\catcode`#2\active
- \begingroup \lccode`\~=`#2\relax
- \lowercase{\endgroup#1~}}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\def\mesjsetup{\begingroup \count@=12
- \def\do##1{\catcode`##1\count@ \do}%
- \xp@\do\otherchars{a11 \@gobbletwo}%
- \xp@\do\controlchars{a11 \@gobbletwo}%
- \xp@\do\highchars{a11 \@gobbletwo}%
- \actively\edef\^^I{ \space\space\space
- \space\space\space\space}%
- \endlinechar=`\^^M\actively\let\^^M=\relax
- \catcode`\{=1 \catcode`\}=2 }
-\def\sendmesj{\newlinechar`\^^J%
- \actively\def\^^M{^^J}%
- \immediate\write\sixt@@n{\mesjtext}\endgroup}
-\def\mesj{\mesjsetup \afterassignment\sendmesj
- \def\mesjtext}
-\def\sendprompt{%
- \newlinechar`\!\relax \actively\def\^^M{!}%
- \message{\mesjtext}\endgroup}
-\def\promptmesj{\mesjsetup
- \afterassignment\sendprompt \def\mesjtext}
-\def\storemesj#1{\mesjsetup
- \catcode`\#=6 % to allow arguments if needed
- \afterassignment\endgroup
- \long\gdef#1}
-\def\fmesj#1#2#{\mesjsetup
- \catcode`\#=6 % restore to normal
- \toks@{\long\gdef#1#2}%
- \def\@tempa{%
- \edef\@tempa{%
- \the\toks@{%
- \begingroup\def\nx@\mesjtext{\the\toks2 }%
- \nx@\sendmesj}%
- }%
- \@tempa
- \endgroup % Turn off the \mesjsetup catcodes
- }%
- \afterassignment\@tempa
- \toks2=}
-\def\xmesjsetup{\mesjsetup
- \iffalse{\fi
- \catcode`\\=0 \catcode`\%=14
- \begingroup \lccode`\0=`\\\lccode`\1=`\{%
- \lccode`\2=`\}\lccode`\3=`\%%
- \lowercase{\endgroup \def\\{0}\def\{{1}%
- \def\}{2}\def\%{3}}%
- \iffalse}\fi
- \edef\&{\string &}%
- \actively\let\&=\noexpand
- \actively\let\^^M=\relax
- \def\.{}%
- \def\ { }\edef~{\string ~}%
- \begingroup \lccode`\~=`\^^M%
- \lowercase{\endgroup \def\^^M{~}}%
- \let\^^J\^^M \def\par{\^^M\^^M}%
-}
-\def\xmesj{\xmesjsetup \afterassignment\sendmesj
- \edef\mesjtext}
-\def\promptxmesj{\xmesjsetup
- \afterassignment\sendprompt \edef\mesjtext}
-\def\storexmesj#1#2#{\xmesjsetup
- \catcode`\#=6 % to allow arguments if needed
- \edef\#{\string##}%
- \afterassignment\endgroup
- \long\xdef#1#2}
-\def\fxmesj#1#2#{\xmesjsetup
- \catcode`\#=6 % restore to normal
- \edef\#{\string##}%
- \toks@{\long\xdef#1#2}%
- \def\@tempa{%
- \edef\@tempa{%
- \the\toks@{\begingroup
- \def\nx@\nx@\nx@\mesjtext{\the\toks\tw@}%
- \nx@\nx@\nx@\sendmesj}}%
- \@tempa % execute the constructed xdef
- \endgroup % restore normal catcodes
- }%
- \afterassignment\@tempa
- \toks\tw@=}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\def\readline#1#2{%
- \begingroup \count@ 12 %
- \def\do##1{\catcode`##1\count@ \do}%
- \xp@\do\otherchars{a11 \@gobbletwo}%
- \xp@\do\controlchars{a11 \@gobbletwo}%
- \xp@\do\highchars{a11 \@gobbletwo}%
- \catcode`\ =10 \catcode`\^^I=10 %
- \catcode`\^^M=9 % ignore
- \endlinechar`\^^M
- \read\m@ne to#2%
- \edef#2{\def\nx@#2{#2}}%
- \xp@\endgroup #2%
- \ifx\@empty#2\def#2{#1}\fi
-}
-\def\xreadline#1#2{%
- \begingroup
- \xp@\let\csname bye\endcsname\relax
- \xp@\let\csname newif\endcsname\relax
- \xp@\let\csname newcount\endcsname\relax
- \xp@\let\csname newdimen\endcsname\relax
- \xp@\let\csname newskip\endcsname\relax
- \xp@\let\csname newmuskip\endcsname\relax
- \xp@\let\csname newtoks\endcsname\relax
- \xp@\let\csname newbox\endcsname\relax
- \xp@\let\csname newinsert\endcsname\relax
- \xp@\let\csname +\endcsname\relax
- \actively\let\^^L\relax
- \catcode`\^^M=9 % ignore
- \endlinechar`\^^M% reset to normal
- \read\m@ne to#2%
- \toks@\xp@{#2}%
- \edef\@tempa{\def\nx@#2{\the\toks@}}%
- \xp@\endgroup \@tempa
- \ifx\@empty#2\def#2{#1}\fi
-}
-\def\readchar#1#2{%
- \readline{#1}#2%
- \edef#2{\xp@\@car#2#1{}\@nil}%
-}
-\def\readChar#1#2{%
- \readline{#1}#2%
- \changecase\uppercase#2%
- \edef#2{\xp@\@car #2#1{}\@nil}%
-}
-\def\changecase#1#2{\@casetoks\xp@{#2}%
- \edef#2{#1{\def\nx@#2{\the\@casetoks}}}#2}
-\newtoks\@casetoks
-\def\checkinteger#1#2{\let\scansign@\@empty
- \def\scanresult@{#2}%
- \xp@\scanint#1x\endscan}
-\def\scanint#1{%
- \ifodd 0#11 %
- \def\@tempa{\afterassignment\endscan
- \scanresult@=\scansign@#1}%
- \else
- \if -#1\relax
- \edef\scansign@{%
- \ifx\@empty\scansign@ -\fi}%
- \def\@tempa{\scanint}%
- \else
- \if +#1\relax
- \def\@tempa{\scanint}%
- \else % not a valid number
- \def\@tempa{%
- \scanresult@=-\maxdimen\endscan}%
- \fi\fi\fi
- \@tempa
-}
-\def\endscan#1\endscan{}
-\newcount\dimenfirstpart
-\newtoks\dimentoks
-\def\scandimen#1{%
- \ifodd 0#11
- \def\@tempa{\def\@tempa{\scandimenb}%
- \afterassignment\@tempa
- \dimenfirstpart#1}%
- \else
- \if \if,#1.\else#1\fi.%
- \def\@tempa{\scandimenc}%
- \else
- \if -#1% then flipflop the sign
- \edef\scansign@{%
- \ifx\@empty\scansign@ -\fi}%
- \def\@tempa{\scandimen}%
- \else
- \if +#1% then ignore it
- \def\@tempa{\scandimen}%
- \else % not a valid dimen
- \def\@tempa{%
- \scanresult@=-\maxdimen\endscan}%
- \fi\fi\fi\fi
- \@tempa
-}
-\def\scandimenb#1{%
- \if \if,#1.\else#1\fi.%
- \def\@tempa{\scandimenc}%
- \else
- \def\@tempa{\scanunitsa#1}%
- \fi
- \@tempa
-}
-\def\scandimenc#1{%
- \ifodd 0#11 \dimentoks\xp@{%
- \the\dimentoks#1}%
- \def\@tempa{\scandimenc}%
- \else
- \def\@tempa{\scanunitsa#1}%
- \fi
- \@tempa
-}
-\def\scanunitsa#1\endscan{%
- \def\@tempa##1true##2##3\@tempa{##2}%
- \lowercase{%
- \xp@\ifx\xp@\end
- \@tempa#1true\end\@tempa
- }%
- \let\dimentrue@\@empty
- \def\@tempa{\scanunitsb#1\endscan}%
- \else
- \def\dimentrue@{true}%
- \def\@tempa##1true##2\@tempa{%
- \def\@tempa{##1}%
- \ifx\@tempa\@empty
- \def\@tempa{\scanunitsb##2\endscan}%
- \else
- \def\@tempa{\scanunitsb xx\endscan}%
- \fi}%
- \@tempa#1\@tempa
- \fi
- \@tempa
-}
-\def\scanunitsb#1#2{%
- \def\@tempa##1#1#2##2##3\@nil{##2}%
- \def\@tempb##1{T\@tempa
- pcTptTcmTccTemTexTinTmmTddTspT##1F\@nil}%
- \lowercase{%
- \if\@tempb{#1#2}%
- }%
- \scanresult@=\scansign@
- \number\dimenfirstpart.\the\dimentoks
- \dimentrue@#1#2\relax
- \else
- \scanresult@=-\maxdimen
- \fi
- \endscan
-}
-\def\checkdimen#1#2{%
- \let\scansign@\@empty \def\scanresult@{#2}%
- \let\dimentrue@\@empty
- \dimenfirstpart\z@ \dimentoks{}%
- \xp@\scandimen#1xx\endscan
-}
-\restorecatcodes
-%%% ====================================================================
-%%% @LaTeX-style-file{
-%%% filename = "menus.sty",
-%%% version = "0.9x",
-%%% date = "1994/11/08",
-%%% time = "13:32:59 EST",
-%%% checksum = "38585 989 4295 33156",
-%%% keywords = "TeX, menus",
-%%% author = "Michael Downes",
-%%% email = "mjd@math.ams.org (Internet)",
-%%% supported = "yes",
-%%% abstract = "This file provides functions for writing
-%%% messages and menus on screen, and reading user responses. It
-%%% can be used with LaTeX as a documentstyle option, or in
-%%% other forms of TeX by a standard \input statement.",
-%%% docstring = "The checksum field above contains a CRC-16
-%%% checksum as the first value, followed by the equivalent of
-%%% the standard UNIX wc (word count) utility output of lines,
-%%% words, and characters. This is produced by Robert Solovay's
-%%% checksum utility.",
-%%% }
-%%% ====================================================================
-\localcatcodes{\@{11}%
- \~{13}\"{12}\#{6}\^{7}\`{12}\${3}\:{12}}
-\storexmesj\menuprefix{
-======================================================================
-}
-\let\menusuffix=\menuprefix
-\storemesj\inmenuA{
-}
-\storemesj\inmenuB{
-}
-\storemesj\menuline{ }
-\def\menutopline{}
-\def\menubotline{}
-\storemesj\endmenuline{
-}%
-\def\menunumber#1{[#1] }
-\def\menuprompt{\promptmesj{Your choice? }}
-\newtoks\menufirstpart
-\newtoks\menuchoices
-\newtoks\menulastpart
-\def\fmenu#1#2#{\mesjsetup
- \catcode`\#=6 % for parameters
- \toks@{\fxmenub{\gdef}{\begingroup}{}#1{#2}}%
- \def\@tempa##1##{%
- \def\@tempa####1####{%
- \def\@tempa{\the\toks@}%
- \afterassignment\@tempa \menulastpart}%
- \afterassignment\@tempa \menuchoices}%
- \afterassignment\@tempa \menufirstpart
-}
-\begingroup % localize \lccode change
-\lccode`\~=`\^^M
-\lowercase{%
-\long\gdef\stripM#1$~#2#3\stripM#4{%
- \ifx$#2%
- \stripMa#1\stripMa#4%
- \else
- \stripMb#2#3\stripMb#4%
- \fi
-}
-}% end lowercase
-\lowercase{%
-\long\gdef\stripMa $#1\stripMa#2{%
- \stripMb#1$~$$\stripMb#2}
-}% end lowercase
-\lowercase{%
-\long\gdef\stripMb#1~$#2#3\stripMb#4{%
- \ifx$#2%
- \stripMc#1\stripMc#4%
- \else
- \stripMd#1\stripMd#4%
- \fi
-}
-}% end lowercase
-\long\gdef\stripMc#1$#2\stripMc#3{%
- \stripMd#1\stripMd#3}
-\long\gdef\stripMd#1\stripMd#2{#2{#1}}
-\endgroup
-\begingroup \lccode`\~=`\^^M
-\lowercase{%
-\gdef\stripcontrolMs#1{\xp@\stripM
- \xp@$\the#1$~$$\stripM#1}
-}% end lowercase
-\lowercase{%
-\gdef\addmenulines#1#2#3{%
- \def ~##1~##2{%
- #1\xp@{\the#1#2##1#3}%
- \ifx\end##2\xp@\@gobbletwo\fi~##2}%
- \edef\@tempa{\nx@~\the#1\nx@~}#1{}%
- \@tempa\end}
-}% end lowercase
-\endgroup % restore lccode of ~
-\def\fxmenub#1#2#3#4#5{%
- \stripcontrolMs\menufirstpart
- \stripcontrolMs\menulastpart
- \stripcontrolMs\menuchoices
- \addmenulines\menuchoices\menuline\endmenuline
- \actively\let\^^M\relax % needed for \xdef
- \toks@{\long#1#4#5}% e.g. \xdef\foo##1##2
- \edef\@tempa{\the\menufirstpart}%
- \ifx\@tempa\@empty
- \let\nxa@\@gobble
- \else
- \addmenulines\menufirstpart
- \menutopline\endmenuline
- \let\nxa@\nx@
- \fi
- \edef\@tempa{\the\menulastpart}%
- \ifx\@tempa\@empty
- \let\nxb@\@gobble
- \else
- \addmenulines\menulastpart
- \menubotline\endmenuline
- \let\nxb@\nx@
- \fi
-\edef\@tempa{{#3\nx@#3#2%
- \def#3\nx@#3\mesjtext{%
- #3\nx@#3\menuprefix
- \the\menufirstpart #3\nxa@#3\inmenuA
- \the\menuchoices #3\nxb@#3\inmenuB
- \the\menulastpart #3\nx@#3\menusuffix}%
- #3\nx@#3\sendmesj
- #3\nx@#3\menuprompt}}%
- \toks2 \xp@{\@tempa}%
- \edef\@tempa{\the\toks@\the\toks2 }%
- \let\menutopline\relax \let\menuline\relax
- \let\menubotline\relax \let\endmenuline\relax
- \let\menunumber\relax
- \@tempa % finally, execute the \gdef or \xdef
- \endgroup % matches \mesjsetup done by \fxmenu
-}% end \fxmenub
-\def\fxmenu#1#2#{\xmesjsetup
- \toks@{\fxmenub{\xdef}{\xmesjsetup}\nx@#1{#2}}%
- \def\@tempa##1##{%
- \def\@tempa####1####{%
- \def\@tempa{\the\toks@}%
- \afterassignment\@tempa \menulastpart}%
- \afterassignment\@tempa \menuchoices}%
- \afterassignment\@tempa \menufirstpart
-}
-\def\notyet#1{%
- \errmessage{Not yet implemented: \string#1}}
-\long\def\nmenu#1#2#3#4#5{\notyet\nmenu}
-\long\def\nxmenu#1#2#3#4#5{\notyet\nxmenu}
-\newtoks\optionstack
-\let\curmenu\@empty
-\let\estart\relax
-\let\eend\relax
-\def\pushoptions#1{%
- \edef\pushtemp{\estart
- \def\nx@\curmenu{\curmenu}%
- \eend
- \the\optionstack}%
- \global\optionstack\xp@{\pushtemp}%
- \edef\curmenu{\curmenu#1}%
-}
-\def\popoptions{%
- \edef\@tempa{\the\optionstack}%
- \ifx\@empty\@tempa
- \errmessage{Can't pop empty stack
- (\string\optionstack)}%
- \else
- \def\estart##1\eend##2\@nil{%
- \global\optionstack{##2}%
- \let\estart\relax##1}%
- \the\optionstack\@nil
- \fi
-}
-\fmesj\moptionX{Exiting . . .}
-\def\repeatoption{%
- \csname moption\curmenu\endcsname}
-\def\moptionQ{\popoptions \repeatoption}
-\fxmesj\badoptionmesj#1{%
-?---I don't understand "#1".}
-\def\optionexec#1{%
- \if ?#1\relax \let\@tempa\moptionhelp
- \else \if Q#1\relax
- \ifx\curmenu\@empty \let\@tempa\moptionX
- \else \let\@tempa\moptionQ \fi
- \else \if X#1\relax \let\@tempa\moptionX
- \else
- \xp@\let\xp@\@tempa
- \csname moption\curmenu#1\endcsname
- \ifx\@tempa\relax
- \badoptionmesj{#1}\let\@tempa\repeatoption
- \else
- \pushoptions{#1}%
- \fi
- \fi\fi\fi
- \@tempa
-}
-\def\optionfileexec#1{\notyet\optionfileexec}
-\def\xoptiontest#1{TT\fi
- \begingroup \def\0{?}\def\1{Q}%
- \def\2{q}\def\3{x}\def\4{X}%
- \aftergroup\if\aftergroup T%
- \ifx\0#1\aftergroup T%
- \else\ifx\1#1\aftergroup T%
- \else\ifx\2#1\aftergroup T%
- \else\ifx\3#1\aftergroup T%
- \else\ifx\4#1\aftergroup T%
- \else \aftergroup F%
- \fi\fi\fi\fi\fi
- \endgroup
-}
-\fxmesj\menuhelpmesj{&\menuprefix%
-A response of Q will usually send you back to %
-the previous menu.
-A response of X will get you entirely out of %
-the menu system.
-&\menusuffix%
-Press the <Return> key ( Enter ) to continue:
-}
-\def\moptionhelp{%
- \menuhelpmesj \readline{}\reply \repeatoption}
-\def\moptionhelp{%
- \menuhelpmesj \readline{}\reply \repeatoption}
-\xp@\def\csname moption?\endcsname{%
- \moptionhelp}
-\def\specialhelp#1#2{%
- \let\specialhelpreply=#1\def#1{?}\begingroup
- \def\menuhelpmesj{\let#1\specialhelpreply
- \promptxmesj{#2\
-Press <return> to continue:}\endgroup}%
-}
-\def\specialhelpreply{}
-\def\lettermenu#1{%
- \csname menu#1\endcsname
- \readChar{Q}\reply \optionexec\reply
-}
-\restorecatcodes
-%%% ====================================================================
-%%% @TeX-file{
-%%% filename = "listout.tex",
-%%% version = "1.4r",
-%%% date = "1994/12/02",
-%%% time = "15:22:30 EST",
-%%% author = "Michael Downes",
-%%% address = "49 Weeks Street
-%%% North Smithfield, RI 02986, USA",
-%%% email = "mjd@math.ams.org (Internet)",
-%%% checksum = "55045 5069 16082 147112",
-%%% keywords = "tex, verbatim",
-%%% abstract = "The purpose of this macro file is to print
-%%% verbatim listings of arbitrary text files, fitting as much
-%%% text per sheet of paper as possible. The default settings
-%%% are for US letter size paper 8.5 x 11 inches, two `pages'
-%%% per sheet, landscape mode, but extensive customization
-%%% facilities are provided. To conserve even more paper, you
-%%% should take advantage of any two-sided capabilities your
-%%% printer may happen to have.",
-%%% docstring = "The checksum field above contains a CRC-16
-%%% checksum as the first value, followed by the equivalent of
-%%% the standard UNIX wc (word count) utility output of lines,
-%%% words, and characters. This is produced by Robert Solovay's
-%%% checksum utility.",
-%%% }
-%%% ====================================================================
-\localcatcodes{\@{11}\~{13}\"{12}\:{12}}
-\def\xmeaning#1{\xp@\xmeaningtrim\meaning#1}
-\def\xmeaningtrim#1->{}
-\def\TRUE{TT}
-\def\FALSE{TF}
-\def\@empty{}
-\def\@iden#1{#1}
-\def\datesepchar{ }
-\let\keepleadingzeros\FALSE
-\def\twodigits#1{\ifnum#1<10 0\fi
- \xp@\@iden\xp@{\number#1}}
-\edef\themonth{\number\month}
-\edef\theday{\number\day}
-\edef\theyear{\number\year}
-\edef\yearmodC{\xp@\@gobbletwo\number\year}
-\def\Jan{January} \def\Feb{February}
-\def\Mar{March} \def\Apr{April}
-\def\May{May} \def\Jun{June}
-\def\Jul{July} \def\Aug{August}
-\def\Sep{September} \def\Oct{October}
-\def\Nov{November} \def\Dec{December}
-\def\datesetup{%
- \edef\themonthname{%
- \ifcase\month ?% case 0---THIS CAN'T HAPPEN
- \or\Jan\or\Feb\or\Mar\or\Apr\or\May\or\Jun
- \or\Jul\or\Aug\or\Sep\or\Oct\or\Nov\or\Dec
- \else ?\fi}%
- \def\do##1##2##3##4\od{##1##2##3}%
- \edef\themon{\xp@\do\themonthname\od}%
- \let\theMON\themon \changecase\uppercase\theMON
- \if\keepleadingzeros
- \edef\themonth{\twodigits\month}%
- \edef\theday{\twodigits\day}%
- \else
- \edef\themonth{\number\month}%
- \edef\theday{\number\day}%
- \fi
-}
-\datesetup
-\def\dateA{%
- \theyear\datesepchar\themonth\datesepchar\theday}
-\def\dateB{%
- \yearmodC\datesepchar\themonth\datesepchar\theday}
-\def\dateC{%
- \themonth\datesepchar\theday\datesepchar\yearmodC}
-\def\dateD{%
- \themonth\datesepchar\theday\datesepchar\theyear}
-\def\dateE{%
- \theday\datesepchar\themon\datesepchar\yearmodC}
-\def\dateF{%
- \theday\datesepchar\themon\datesepchar\theyear}
-\def\dateG{%
- \theday\datesepchar\theMON\datesepchar\yearmodC}
-\def\dateH{%
- \theday\datesepchar\theMON\datesepchar\theyear}
-\def\dateI{%
- \themonthname\space\number\day, \theyear}
-\def\dateJ{%
- \theday\datesepchar\themonthname\datesepchar\theyear}
-\def\todaysdate{\dateJ}
-\count@=\time \divide\count@ 60
-\edef\thehour{\twodigits\count@}
-\multiply\count@ -60 \advance\count@\time
-\edef\theminute{\twodigits\count@}
-\def\ampmpunct{.}
-\count@=\thehour\relax
-\ifnum\count@>11 \def\ampm{p}%
- \ifnum\count@>12
- \begingroup \advance\count@ -12
- \aftergroup\edef\aftergroup\thehourmodtwelve
- \aftergroup{\xp@
- \endgroup \number\count@}%
- \else
- \edef\thehourmodtwelve{12}%
- \fi
-\else
- \def\ampm{a}%
- \ifnum\count@=0 \count@=12 \fi
- \edef\thehourmodtwelve{\number\count@}%
-\fi
-\let\AMPM\ampm \changecase\uppercase\AMPM
-\def\midnoon#1{\ifnum\time=0 midnight\else
- \ifnum\time=720 noon\else#1\fi\fi}
-\def\timesepchar{:}
-\def\timeA{\thehour\theminute}
-\def\timeB{\thehour\timesepchar\theminute}
-\def\timeC{\thehourmodtwelve\timesepchar\theminute
- \space\midnoon{\ampm m}}
-\def\timeD{\thehourmodtwelve\timesepchar\theminute
- \space\midnoon{\ampm\ampmpunct m\ampmpunct}}
-\def\timeE{\thehourmodtwelve\timesepchar\theminute
- \space\midnoon{\AMPM M}}
-\def\timeF{\thehourmodtwelve\timesepchar\theminute
- \space\midnoon{\AMPM\ampmpunct M\ampmpunct}}
-\def\nowtime{\timeB}
-\chardef\curcol=1
-\chardef\totalcols=2
-\countdef\firstpageno=1
-\countdef\lastpageno=2
-\newbox\prevcolsbox
-\newdimen\paht \newdimen\pawd
-\newdimen\fullwd
-\newdimen\colwd
-\let\dependentcolwd\TRUE
-\newdimen\leftmargin
-\newdimen\rightmargin
-\let\dependentrightmargin\TRUE
-\def\computerfc{\relax \rightmargin=\leftmargin
- \computefc }
-\def\computefc{\fullwd=\pawd
- \advance\fullwd-\leftmargin
- \advance\fullwd-\rightmargin
- \colwd\fullwd
- \advance\colwd \intercolspace
- \divide\colwd \totalcols
- \advance\colwd -\intercolspace
- \edef\columnwidth{\the\colwd}%
-}
-\def\computefr{\fullwd\colwd
- \advance\fullwd \intercolspace
- \multiply\fullwd \totalcols
- \advance\fullwd -\intercolspace
- \rightmargin\pawd
- \advance\rightmargin-\leftmargin
- \advance\rightmargin-\fullwd
-}
-\newdimen\colht
-\newdimen\intercolspace \newdimen\overrun
-\newdimen\runheadht \newdimen\runfootht
-\newdimen\bottommargin \newdimen\topmargin
-\def\computebc{\bottommargin=\topmargin \computec}
-\def\computec{%
- \colht\paht \advance\colht -\topmargin
- \advance\colht -\bottommargin
- \advance\colht -\runheadht
- \advance\colht -\runfootht
- \roundcolht
- \bottommargin\paht
- \advance\bottommargin -\topmargin
- \advance\bottommargin -\colht
-}
-\def\roundcolht{%
- \advance\colht .5\baselineskip
- \divide\colht\baselineskip
- \edef\columnheight{\number\colht\space lines}%
- \multiply\colht\baselineskip
- \advance\colht\topskip
- \advance\colht -\baselineskip
-}
-\let\dependentcolht\TRUE
-\let\dependentbottommargin\TRUE
-\def\computeb{%
- \roundcolht
- \bottommargin\paht
- \advance\bottommargin -\topmargin
- \advance\bottommargin -\colht
-}
-\ifx\UndEFiNed\pageno \countdef\pageno=0 \fi
-\def\pagenumber{[\number\pageno]\thinspace{%
- \csname\pagenumberfont
- \pagenumberfontsize\endcsname
- \number\lastpageno}}
-\let\landscape=\TRUE
-\def\pagenumbermessage{%
- \ifnum\totalcols>\@ne
- \message{%
-Printing `pages' \the\firstpageno--\the\lastpageno
-\space on \if\landscape landscape \fi sheet
-\the\pageno}%
- \fi}
-\def\Ncols{\relax
- \ifnum\curcol=\totalcols
- \pagenumbermessage
- \shipout\hbox to\fullwd{%
- \unhbox\prevcolsbox\curcolbox}%
- \global\advance\pageno\@ne
- \global\chardef\curcol \z@
- \ifnum\totalcols>\@ne
- \global\advance\lastpageno \@ne
- \global\firstpageno\lastpageno
- \fi
- \else
- \global\setbox\prevcolsbox\hbox{%
- \unhbox\prevcolsbox\curcolbox
- \hskip\intercolspace plus1fil\relax}%
- \ifnum\totalcols>\@ne
- \global\advance\lastpageno \@ne
- \fi
- \fi
- \edef\next{\global\mathchardef\curcol=
- \ifcase\curcol
- 1\or 2\or 3\or 4\or 5\or 6\or 7\or 8\or 9\or
- 10\or 11\or 12\or 13\or 14\or 15\or 16\or
- 17\or 18\or 19\or 20%
- \else "7FFF\fi\relax
- }%
- \next
-}
-\newtoks\runhead \newtoks\runfoot
-\def\loheadline#1{\relax
- \if\ifdim#1=\colwd T\else
- \ifnum\curcol=\@ne T\else F\fi\fi T%
- \vbox to\runheadht{\rlap{\hbox to#1{%
- \csname\runheadfont\runheadfontsize\endcsname
- \the\runhead}}\vss}%
- \nointerlineskip
- \fi
-}
-\def\lofootline#1{\relax
- \if \ifdim#1=\colwd T\else
- \ifnum\curcol=1 T\else F\fi\fi T%
- \nointerlineskip
- \vbox to\runfootht{\vfil\rlap{\hbox to#1{%
- \csname\runheadfont\runheadfontsize\endcsname
- \the\runfoot}}\kern-\prevdepth
- \vfilneg\vss}%
- \fi
-}
-\def\setupheadlineandfootline{%
- \gdef\hfwd{\colwd}%
- \if\runheads
- \setbox\z@\hbox{%
- \csname\runheadfont\runheadfontsize\endcsname
- \the\runhead}%
- \ifdim\wd\z@>\colwd \gdef\hfwd{\fullwd}\fi
- \fi
- \if\runfeet
- \setbox\z@\hbox{%
- \csname\runfootfont\runfootfontsize\endcsname
- \the\runfoot}%
- \ifdim\wd\z@>\colwd \gdef\hfwd{\fullwd}\fi
- \fi
- \if\runheads
- \if\runfeet
- \gdef\curcolbox{\vtop{\loheadline\hfwd
- \vbox to\vsize{\unvbox255 \vss}%
- \lofootline\hfwd}}%
- \else
- \gdef\curcolbox{%
- \vtop{\loheadline\hfwd \vtop{\unvbox255 }}}%
- \fi
- \else
- \if\runfeet
- \gdef\curcolbox{\vtop{\null\nointerlineskip
- \vbox to\vsize{\unvbox255 \vss}%
- \lofootline\hfwd}}%
- \else
- \gdef\curcolbox{%
- \vtop{\null\unvbox255 }}%
- \fi
- \fi
-}
-\newbox\tableaderbox
-\chardef\spacespertab=8
-\newdimen\tabwidth
-\def\printtaba{%
- \hfil\egroup
- \setbox\z@\hbox{\unhbox\z@ \unskip}%
- \dimen@\wd\z@ \divide\dimen@\tabwidth
- \multiply\dimen@\tabwidth
- \advance\dimen@\tabwidth
- \advance\dimen@ -\wd\z@
- \setbox\z@\hbox to \hsize\bgroup \unhbox\z@
- \spacebreak\hbox to\dimen@{%
- \leaders\copy\tableaderbox\hfil}%
-}
-\def\newfileprinttab{\printtaba
- \message{%
-Say, this file contains a tab character}%
- \global\let\printtab\printtaba}
-\let\printtab=\newfileprinttab
-\newdimen\charwidth
-\def\inittabs{%
- \setbox\z@\hbox{m}\charwidth\wd\z@
- \tabwidth\spacespertab\charwidth
- \ifcase\tabselect % case 0: blank tabs option.
- \setbox\tableaderbox\hbox to\charwidth{}%
- \or % case 1: dots option.
- \setbox\tableaderbox\hbox to.2em{%
- \hskip\z@ plus2\p@ minus3\p@
- \mathhexbox 201% \cdot character
- \kern.1em }%
- \or % case 2: dashed option.
- \setbox\tableaderbox\hbox to.3em{%
- \hskip-.1em plus2sp minus2sp%
- \vrule width.25em height.25em\kern.15em }%
- \or % case 3: hrule option.
- \setbox\tableaderbox\hbox{%
- \vrule width\charwidth height2\p@ depth-1.5\p@}%
- \else % case 4: tiny TAB option.
- \setbox\tableaderbox\hbox to.5em{\hss
- \vbox to6\p@{%
- \offinterlineskip\csname roman5\endcsname
- \hbox to7\p@{T\hss}\vss
- \hbox to7\p@{\hss\kern-.1em A\hss}\vss
- \hbox to7\p@{\hss B}\kern-2\p@}%
- \hss}%
- \fi
- \let\printtab\newfileprinttab
- }
-\def\tabstyle{\ifcase\tabselect blank space\or
- dots\or dashed lines\or horizontal rules\else
- tiny TABs\fi}
-\newdimen\charboxsidekern
-\charboxsidekern=.3pt
-\newbox\charboxstrut
-\def\characterbox#1{%
- \hbox to.5em{\hss
- \dimen@.22\p@ \dimen@ii -.11\p@
- \vrule width\dimen@ \kern\dimen@ii
- \vbox{\hrule height\dimen@
- \kern\charboxsidekern
- \hbox{\kern\charboxsidekern
- #1\kern\charboxsidekern
- \copy\charboxstrut}%
- \dimen4 \prevdepth
- \advance\dimen4 \charboxsidekern
- \advance\dimen@ \dimen4
- \hrule depth\dimen@ height -\dimen4
- }%
- \kern\dimen@ii\vrule width\dimen@\hss}}
-\def\controlchara#1{%
- \message{Warning:
-Invisible control character, printing boxed letter}%
- \characterbox{#1}%
- \gdef\controlchar##1{%
- \message{@}\characterbox{##1}}%
-}
-\def\controlchar{\controlchara}
-\newtoks\controlcharassignments
-\begingroup
-\def\do#1{\count@=`#1 \next \do}
-\def\next{\lccode`\~=\count@ \advance\count@ 64
- \ifnum\count@>127 \advance\count@ -128 \fi
- \lccode`\.=\count@
- \lowercase{\let~\relax
- \global\controlcharassignments\xp@{%
- \the\controlcharassignments
- \def~{\controlchar{.}}}}%
-}
-\xp@\do\controlchars{a \@gobbletwo}
-\endgroup
-\def\unknownchara{%
- \xmesj{Warning: Unspecified character
- (system-dependent interpretation);\
- printing question mark instead}%
- \characterbox{?}%
- \gdef\unknownchar{\message{?}\characterbox{?}}%
-}
-\def\unknownchar{\unknownchara}
-\def\eightbitaction{B}
-\newtoks\highASCIIassignments
-\newtoks\highBSCIIassignments
-\highASCIIassignments{%
- \def\do{\catcode\count@=12 \advance\count@\@ne
- \ifnum\count@>\@cclv \expandafter\@gobble\fi\do}%
- \count@=128 \do}
-\begingroup
-\def\do{%
- \global\catcode\count@\active
- \lccode`\~\count@
- \lowercase{\global\highBSCIIassignments
- \xp@{\the\highBSCIIassignments
- \def~{\unknownchar}}}%
- \ifnum\count@<255\relax
- \advance\count@ 1\relax
- \xp@\do % tail recursion
- \fi}
-\count@=128\relax \do \endgroup
-\def\thisfilename{??}
-\let\printtitles=\TRUE
-\def\@dogobble#1\do{}
-\def\nonttfont#1{%
- \def\do##1{\mathcode`##1`##1 \do}%
- \xp@\do\otherchars{.`.\relax \@dogobble}%
- \mathcode`\<"268 \mathcode`\>"269
- \mathcode`\\"26E \mathcode`\_"8000
- \mathcode`\{"266 \mathcode`\|"26A
- \mathcode`\}"267 \mathcode`\~"218
- \mathcode`\""8000
- \actively\def\_{%
- \leavevmode\kern.06em\vbox{%
- \hrule width.4em height.06em}}%
- \actively\def\"{^{\prime\prime}}%
- \textfont\z@
- \csname\titlefont\titlefontsize\endcsname
- \everymath{}\mathsurround\z@
- $\fam\z@#1$%
-}
-\escapechar=-1
-\edef\DOSdirsepchar{\string\\}
-\escapechar=`\\
-\def\Macintoshdirsepchar{:}
-\def\Unixdirsepchar{/}
-\xp@\def\csname VAX/VMSdirsepchar\endcsname{]}
-\def\chopname#1{%
- \edef\dirsepchar{%
- \csname\systemtype dirsepchar\endcsname}%
- \edef\@tempa{%
- \def\nx@\do####1\dirsepchar}%
- \@tempa
- ##2{%
- \toks@\xp@{\next@}%
- \ifx\end##2% then just add ##1 at the end
- \edef\next@{\the\toks@##1}%
- \else
- \edef\next@{\the\toks@##1%
- \dirsepchar\nx@\allowbreak}%
- \afterfi\do##2%
- \fi
- }%
- \edef\@tempa{\toks@{}\def\nx@\next@{}%
- \nx@\do#1\dirsepchar\nx@\end}%
- \@tempa
- \let#1\next@
- \ifx\@empty\dirprefix
- \else
- \edef#1{\xmeaning\dirprefix\allowbreak#1}%
- \fi
-}
-\def\printtitle{%
- \bigskip
- \centerline{%
- \csname\titlefont\titlefontsize\endcsname
- \chopname\thisfilename
- \ifdim\fontdimen3\font=\z@
- \csname\titlecase\endcsname
- \xp@{\thisfilename}%
- \else
- \csname\titlecase\endcsname
- \xp@{\xp@
- \nonttfont\xp@{\thisfilename}}%
- \fi
- }% end \centerline
- \if S\newfileoption \smallskip
- \else\bigskip\fi
-}
-\def\newfileoption{P}
-\def\newfileS{%
- \dimen@\pagegoal \advance\dimen@-\pagetotal
- \ifdim\dimen@<3\baselineskip
- \xp@\eject\fi
-}
-\def\newfileC{\vfil\eject}
-\def\newfileP{%
- \vfil\eject
- \loop
- \ifnum\curcol>\@ne
- \hbox to\colwd{%
- \vrule width\z@ depth\vsize\hfil}%
- \eject
- \repeat
-}
-\def\newfileR{\vfil\eject
- \ifnum\curcol=\@ne
- \hbox to\colwd{%
- \vrule width\z@ depth\vsize\hfil}%
- \xp@\eject
- \fi
-}
-\newcount\linenumberfreq \linenumberfreq=1
-\newcount\linecount
-\newcount\linesubcount
-\def\printlinenumber{\llap{%
- \global\advance\linecount\@ne
- \global\advance\linesubcount\@ne
- \ifnum\linesubcount=\linenumberfreq
- \lnfnt \the\linecount\space
- \global\linesubcount\z@
- \fi
-}}%
-\def\spacebreak{}
-\def\markedbreak{\penalty\z@}
-\let\noextralinebreaks=\TRUE
-\def\newunnumberedline{\hskip\rightskip \egroup
- \box\z@ \controlLbreak
- \setbox\z@\hbox to\hsize\bgroup}%
-\def\newnumberedline{%
- \newunnumberedline\printlinenumber}%
-\def\unnumberedbreakingline{\relax
- \ifnum\lastpenalty=\@ne \null\fi
- \hskip\rightskip\egroup
- \hfuzz \p@
- \noindent\unhbox\z@ %
- {\hangindent1em
- \parfillskip\z@ plus1fil \endgraf}%
- \hfuzz\maxdimen
- \controlLbreak
- \setbox\z@\hbox to\hsize\bgroup \penalty\@ne
-}%
-\def\numberedbreakingline{%
- \unnumberedbreakingline\printlinenumber}
-\lowercase{\let\@sptoken= } %
-\let\CR\newunnumberedline
-\def\CRSPsetup{%
- \setupbreakingchars
- \if\noextralinebreaks
- \overrun\rightmargin
- \actively\let\ = \@sptoken\relax
- \if\linenumbers
- \let\CR\newnumberedline
- \else
- \let\CR\newunnumberedline
- \fi
- \else
- \actively\edef\ {\spacebreak\space}%
- \if\linenumbers
- \let\CR\numberedbreakingline
- \else
- \let\CR\unnumberedbreakingline
- \fi
- \fi
- \actively\let\^^M\CR
- \rightskip\z@ plus\hsize minus\overrun
- \parfillskip\z@skip
-}
-\def\listout#1{\endgraf
- \begingroup
- \listoutsetup
- \gdef\thisfilename{#1}%
- \xdef\thisfilename{\xmeaning\thisfilename}%
- \if\printtitles \printtitle \fi
- \listoutmoresetup
- \CRSPsetup
- \hfuzz\maxdimen
- \setbox\z@\hbox to\hsize\bgroup \penalty\@ne
- \input#1 \hfil\egroup
- \hfuzz\p@
- \penalty0 %
- \csname newfile\newfileoption\endcsname
- \ifvoid\prevcolsbox
- \else
- \savelistoutimage
- \fi
- \endgroup }
-%% Restore the previous output routine. Interestingly,
-%% \cw{the}\cw{output} returns an extra pair of braces
-%% (as hinted at in the \tex/book); so the extra step
-%% with \cw{toks@} here is slightly better than simply
-%% \cw{global}\cw{output}{\cw{the}\cw{output}}.
-%%\showthe\output
-\def\savelistoutimage{%
- \xdef\listoutimage{%
- \let\nx@\landscape%
- \if\landscape\nx@\TRUE
- \else\nx@\FALSE\fi
- \pawd\the\pawd \paht\the\paht
- \topmargin\the\topmargin
- \bottommargin\the\bottommargin
- \leftmargin\the\leftmargin
- \rightmargin\the\rightmargin
- \normalbaselineskip\the\normalbaselineskip
- \normalbaselines
- \mathchardef\curcol\number\curcol\relax
- \chardef\totalcols\number\totalcols\relax
- \colwd\the\colwd \colht\the\colht
- \fullwd\the\fullwd
- \intercolspace\the\intercolspace
- \overrun\the\overrun
- \def\nx@\todaysdate{\todaysdate}%
- \def\nx@\nowtime{\nowtime}%
- \def\nx@\pagenumberfont{\pagenumberfont}%
- \def\nx@\pagenumberfontsize{%
- \pagenumberfontsize}
- \pageno\the\pageno
- \lastpageno\the\lastpageno
- \firstpageno\the\firstpageno
- \def\nx@\hfwd{\hfwd}%
- \def\nx@\thisfilename{\thisfilename}%
- \let\nx@\runheads%
- \if\runheads\nx@\TRUE
- \else\nx@\FALSE\fi
- \runhead{\the\runhead}%
- \def\nx@\runheadfont{\runheadfont}%
- \def\nx@\runheadfontsize{%
- \runheadfontsize}%
- \runheadht\the\runheadht
- \let\nx@\runfeet%
- \if\runfeet\nx@\TRUE
- \else\nx@\FALSE\fi
- \runfoot{\the\runfoot}%
- \def\nx@\runfootfont{\runfootfont}%
- \def\nx@\runfootfontsize{%
- \runfootfontsize}%
- \runfootht\the\runfootht
- \hoffset\the\hoffset \voffset\the\voffset
- \relax
- }%
-}
-\fxmesj\reportlayout{
-Using paper size &\the&\pawd x &\the&\paht%
- (&\paperwidth x &\paperheight),
-&\number&\totalcols columns, intercolumnspace%
- = &\the&\intercolspace,
-column width = &\the&\colwd, column height%
- = &\the&\colht,
-top margin = &\the&\topmargin, left margin%
- = &\the&\leftmargin.
-}
-\def\listoutsetup{%
- \output{\Ncols}%
- \loadfonts
- \csname\mainfont\mainfontsize\endcsname
- \xp@\let\xp@\lnfnt
- \csname\linenumberfont
- \linenumberfontsize\endcsname
- \normalbaselines
- \if\dependentcolht
- \if\dependentbottommargin \computebc
- \else \computec\fi
- \else
- \computeb
- \fi
- \vsize\colht
- \parskip \z@\relax
- \if\dependentcolwd
- \if\dependentrightmargin \computerfc
- \else \computefc \fi
- \else
- \computefr
- \fi
- \hsize\colwd
- \parindent\z@
- \ifdim\overfullrule>\z@ \overfullrule 2\p@\fi
- \setupheadlineandfootline
- \datesetup
- \voffset\m@ne truein \hoffset\voffset
- \advance\voffset\topmargin \advance\hoffset\leftmargin
- \setbox\charboxstrut\hbox{%
- \vrule height.5emwidth\z@}%
- \inittabs
- \clubpenalty\@M \widowpenalty\@M
- \count@12\relax
- \def\do##1{\catcode`##1\count@ \do}%
- \xp@\do\otherchars{a11 \@gobbletwo}%
- \count@\active
- \xp@\do\controlchars{a11 \@gobbletwo}%
- \the\controlcharassignments
- \global\let\controlchar\controlchara
- \if L\controlLaction
- \actively\let\^^L\linespaceL
- \else
- \if N\controlLaction
- \actively\let\^^L\ejectL
- \fi
- \fi
- \the\csname high\eightbitaction SCIIassignments\endcsname
- \global\let\unknownchar\unknownchara
- \actively\def\`{\kern\z@`}%
- \hfuzz\p@
-}
-\def\linespaceL{\message{Found a ^L character}\CR}
-\def\ejectL{%
- \message{Found a ^L character}%
- \gdef\controlLbreak{\eject}\CR\global\let\controlLbreak\relax
-}
-\let\controlLbreak\relax
-\def\controlLaction{N}
-\actively\let\^^L=\ejectL
-\def\listoutmoresetup{%
- \global\linecount\z@ \global\linesubcount\z@
- \ifnum\totalcols>\@ne
- \global\firstpageno\@ne
- \global\lastpageno\@ne
- \fi
- \relax
- \frenchspacing
- \global\let\printtab\newfileprinttab
- \actively\def\^^I{\printtab}%
- \langnohyphens
-}
-\def\DVImesj{}
-\fxmesj\landscapereminder{%
-********************************************%
-***********************
-* REMINDER: print in LANDSCAPE mode %
- *
-********************************************%
-***********************}
-\def\listoutfinish{%
- \ifvoid\prevcolsbox
- \else
- \wlog{Clearing out previous file}%
- \begingroup
- \listoutimage \output{\Ncols}%
- \def\newfileoption{P}%
- \hbox to\colwd{}%
- \csname newfile\newfileoption\endcsname
- \DVImesj
- \if\landscape
- \landscapereminder
- \fi
- \endgroup
- \fi
-}
-\def\xfont#1={%
- \xp@\font\csname#1\endcsname=}
-\def\ftypewriter{cmtt}
-\def\fbold{cmbx}
-\def\froman{cmr}
-\def\fitalic{cmti}
-\def\fsansserif{cmss}
-\def\loadfont#1#2{%
- \relax\ifnum#2>100 \loadscaledfont{#1}{#2}%
- \else
- \global\xfont#1#2=\csname f#1\endcsname
- \ifnum#2=14 10 scaled\magstep2
- \else\ifnum#2=12 10 scaled\magstep1
- \else\ifnum#2=11 10 scaled\magstephalf
- \else#2\fi\fi\fi
- \relax
- \fi
-}
-\def\loadscaledfont#1#2{\global\xfont#1#2=#1 scaled #2\relax}
-\loadfont{typewriter}{8} % for main text
-\loadfont{bold}{10} % for titles
-\loadfont{roman}{5} % for line numbers
-\loadfont{roman}{6} % for running heads
-\def\mainfont{typewriter}
-\def\mainfontsize{8}
-\csname\mainfont\mainfontsize\endcsname
-\def\titlefont{bold}
-\def\titlefontsize{10}
-\def\linenumberfont{typewriter}
-\def\linenumberfontsize{8}
-\def\pagenumberfont{bold}
-\def\pagenumberfontsize{7}
-\def\runheadfont{roman}
-\def\runheadfontsize{7}
-\def\runfootfont{roman}
-\def\runfootfontsize{7}
-\def\loadfonts{\relax
- \xp@\ifx\csname\mainfont\mainfontsize\endcsname\relax
- \loadfont\mainfont\mainfontsize
- \fi
- \xp@\ifx\csname\pagenumberfont
- \pagenumberfontsize\endcsname\relax
- \loadfont\pagenumberfont\pagenumberfontsize
- \fi
- \if\printtitles
- \xp@\ifx\csname\titlefont
- \titlefontsize\endcsname\relax
- \loadfont\titlefont\titlefontsize
- \fi
- \fi
- \if\linenumbers
- \xp@\ifx\csname\linenumberfont
- \linenumberfontsize\endcsname\relax
- \loadfont\linenumberfont\linenumberfontsize
- \fi
- \fi
- \if\runheads
- \xp@\ifx\csname\runheadfont
- \runheadfontsize\endcsname\relax
- \loadfont\runheadfont\runheadfontsize
- \fi
- \fi
- \if\runfeet
- \xp@\ifx\csname\runfootfont
- \runfootfontsize\endcsname\relax
- \loadfont\runfootfont\runfootfontsize
- \fi
- \fi
-}
-\tracingstats=1
-\ifx\undefined\language
- \def\langnohyphens{\hyphenchar\font\m@ne}
-\else
- \xp@\ifx\csname newlanguage\endcsname\relax
- \def\langnohyphens{\language\@cclv}
- \else
- \csname newlanguage\endcsname
- \nohyphenslanguage
- \def\langnohyphens{%
- \language\nohyphenslanguage}%
- \fi
-\fi
-\def\setupbreakingchars{%
- \ifx\breakingchars\@empty
- \ifx\spacebreak\@empty
- \let\noextralinebreaks\TRUE
- \else
- \let\noextralinebreaks\FALSE
- \fi
- \else
- \let\noextralinebreaks\FALSE
- \def\do##1{\ifx\end##1\else
- \xp@\actively\xp@
- \def\csname##1\endcsname{##1\markedbreak}%
- \xp@\do\fi}%
- \xp@\do\breakingchars\end
- \let\spacebreak\markedbreak
- \fi
- \exhyphenpenalty\@M
-}
-\def\iwlos#1{\immediate\write#1}
-\storexmesj\losfirstline{%
-\% &\losname.los &\todaysdate &\nowtime
-\% Option settings for listout.tex.}%
-\def\addmonth#1{%
- \toks4 \xp@{#1}%
- \edef\next{\the\toks2
- \string\def\string#1{\the\toks4 }}%
- \toks2 \xp@{\next}%
-}
-\begingroup
-\endlinechar13 \catcode\endlinechar13
-\gdef\logoptionsettings#1{\begingroup%
- \newlinechar13\relax\actively\let\^^M\relax%
- \toks2 {}%
- \addmonth\Jan \addmonth\Feb \addmonth\Mar%
- \toks2 \xp@{\the\toks2\relax
- }%
- \addmonth\Apr \addmonth\May \addmonth\Jun%
- \toks2 \xp@{\the\toks2\relax
- }%
- \addmonth\Jul \addmonth\Aug \addmonth\Sep%
- \toks2 \xp@{\the\toks2\relax
- }%
- \addmonth\Oct \addmonth\Nov \addmonth\Dec%
- \iwlos{#1}{%
- \losfirstline
- \the\toks2\relax
- }%
- \iwlos{#1}{%
- \string\let\string\landscape=%
- \if\landscape\string\TRUE
- \else\string\FALSE\fi
- \string\pawd=\the\pawd
- \string\def\string\paperwidth{\paperwidth}
- \string\paht=\the\paht
- \string\def\string\paperheight{\paperheight}
- \string\topmargin=\the\topmargin
- \string\bottommargin=\the\bottommargin
- \string\leftmargin=\the\leftmargin
- \string\rightmargin=\the\rightmargin
- \string\normalbaselineskip=%
- \the\normalbaselineskip\string\relax
- \string\def\string\mainfontsize{\mainfontsize}
- \string\def\string\mainfont{\mainfont}
- \string\chardef\string\totalcols=%
- \number\totalcols\string\relax
- \string\colwd=\the\colwd
- \string\def\string\columnwidth{\columnwidth}
- \string\let\string\dependentcolwd=%
- \if\dependentcolwd\string\TRUE
- \else\string\FALSE\fi
- \string\let\string\dependentrightmargin=%
- \if\dependentrightmargin\string\TRUE
- \else\string\FALSE\fi
- \string\colht=\the\colht
- \string\def\string\columnheight{\columnheight}
- \string\let\string\dependentcolht=%
- \if\dependentcolht\string\TRUE
- \else\string\FALSE\fi
- \string\let\string\dependentbottommargin=%
- \if\dependentbottommargin\string\TRUE
- \else\string\FALSE\fi
- \string\intercolspace=\the\intercolspace
- \string\overrun=\the\overrun
- \string\fullwd=\the\fullwd
- }%
- \iwlos{#1}{%
- \string\def\string\newfileoption{%
- \newfileoption}
- \string\let\string\printtitles=%
- \if\printtitles\string\TRUE
- \else\string\FALSE\fi
- \string\def\string\titlefont{\titlefont}
- \string\def\string\titlefontsize{%
- \titlefontsize}
- \string\def\string\titlecase{\titlecase}
- \string\def\string\datesepchar{\datesepchar}
- \string\def\string\todaysdate{%
- \xp@\string\todaysdate}
- \string\def\string\nowtime{%
- \xp@\string\nowtime}
- \string\def\string\timesepchar{\timesepchar}
- \string\def\string\ampmpunct{\ampmpunct}
- \string\let\string\keepleadingzeros=%
- \if\keepleadingzeros\string\TRUE
- \else\string\FALSE\fi
- \string\def\string\linenumberfontsize{%
- \linenumberfontsize}
- \string\def\string\linenumberfont{%
- \linenumberfont}
- \string\let\string\linenumbers=%
- \if\linenumbers\string\TRUE
- \else\string\FALSE\fi
- \string\linenumberfreq=%
- \number\linenumberfreq\string\relax
- \string\def\string\pagenumberfont{%
- \pagenumberfont}
- \string\def\string\pagenumberfontsize{%
- \pagenumberfontsize}
- \string\let\string\runheads=%
- \if\runheads\string\TRUE
- \else\string\FALSE\fi
- \string\runhead={\the\runhead}
- \string\def\string\runheadfont{\runheadfont}
- \string\def\string\runheadfontsize{%
- \runheadfontsize}
- \string\runheadht=\the\runheadht
- \string\let\string\runfeet=%
- \if\runfeet\string\TRUE\else\string\FALSE\fi
- \string\runfoot={\the\runfoot}
- \string\def\string\runfootfont{\runfootfont}
- \string\def\string\runfootfontsize{%
- \runfootfontsize}
- \string\runfootht=\the\runfootht
- \string\def\string\spacebreak{\spacebreak}
- \string\def\string\breakingchars{%
- \breakingchars}
- \string\let\string\noextralinebreaks=%
- \if\noextralinebreaks\string\TRUE
- \else\string\FALSE\fi
- \string\def\string\controlLaction{\controlLaction}
- \string\def\string\eightbitaction{\eightbitaction}
- \string\def\string\systemtype{\systemtype}
- \string\def\string\losdir{\losdir}
- \string\storemesj\string\dirprefix{\dirprefix}
- \string\chardef\string\spacespertab=%
- \number\spacespertab\string\relax
- \string\chardef\string\tabselect=%
- \number\tabselect\string\relax
-}\endgroup}%
-\endgroup% percent to avoid catcode 12 endlinechar
-\def\Jan{January}\def\Feb{February}\def\Mar{March}\relax
-\def\Apr{April}\def\May{May}\def\Jun{June}\relax
-\def\Jul{July}\def\Aug{August}\def\Sep{September}\relax
-\def\Oct{October}\def\Nov{November}\def\Dec{December}\relax
-\let\landscape=\TRUE
-\pawd=794.96999pt
-\def\paperwidth{11in}
-\paht=614.295pt
-\def\paperheight{8.5in}
-\topmargin=18.06749pt
-\bottommargin=19.22751pt
-\leftmargin=21.68121pt
-\rightmargin=21.68121pt
-\normalbaselineskip=10.0pt\relax
-\def\mainfontsize{10}
-\def\mainfont{typewriter}
-\chardef\totalcols=2\relax
-\colwd=369.38373pt
-\def\columnwidth{369.38373pt}
-\let\dependentcolwd=\TRUE
-\let\dependentrightmargin=\TRUE
-\colht=577.0pt
-\def\columnheight{64 lines}
-\let\dependentcolht=\TRUE
-\let\dependentbottommargin=\TRUE
-\intercolspace=12.0pt
-\overrun=21.68121pt
-\fullwd=751.60756pt
-\def\newfileoption{P}
-\let\printtitles=\TRUE
-\def\titlefont{bold}
-\def\titlefontsize{10}
-\def\titlecase{none}
-\def\datesepchar{/}
-\def\todaysdate{\dateA}
-\def\nowtime{\timeB}
-\def\timesepchar{:}
-\def\ampmpunct{.}
-\let\keepleadingzeros=\TRUE
-\def\linenumberfontsize{5}
-\def\linenumberfont{roman}
-\let\linenumbers=\FALSE
-\linenumberfreq=1\relax
-\def\pagenumberfont{bold}
-\def\pagenumberfontsize{7}
-\let\runheads=\TRUE
-\runhead={\todaysdate \space \nowtime \space \hfil
- \thisfilename \space \hfil \pagenumber }
-\def\runheadfont{roman}
-\def\runheadfontsize{7}
-\runheadht=24.0pt
-\let\runfeet=\FALSE
-\runfoot={}
-\def\runfootfont{roman}
-\def\runfootfontsize{6}
-\runfootht=24.0pt
-\def\spacebreak{\penalty \z@ }
-\def\breakingchars{}
-\let\noextralinebreaks=\FALSE
-\def\controlLaction{N}
-\def\systemtype{DOS}
-\def\losdir{}
-\storemesj\dirprefix{}
-\chardef\spacespertab=8\relax
-\chardef\tabselect=1\relax
-\def\losname{default}
-\edef\losfile{\losdir\losname.los }
-\openin15=\losfile \relax
-\ifeof15 \closein15 \expandafter\@gobbletwo
-\else
-\immediate\write16{Reading option settings from `\losname.los' . . .}
-\closein15 \fi
-\input\losfile % try entering "nul" if file not found
-\datesetup
-\normalbaselines
-\ifx\undefined\interactive
- \def\next{listout}%
- \edef\next{\xmeaning\next}%
- \edef\jobname{\jobname}%
- \ifx\next\jobname
- \let\interactive\TRUE
- \else
- \let\interactive\FALSE
- \fi
-\else
- \let\interactive\TRUE
-\fi
-\if\interactive
-\else \restorecatcodes \endinput \fi
-\def\printfiles{%\reportlayout
- \mesj{OK, let's print some files.}%
- \begingroup
- \listoutsetup \let\listoutsetup\relax
- \fileloop
- \endgroup
- \listoutfinish
- \csname \string @\string @end\endcsname
- \end
-}%
-\newcount\numberoffiles
-\def\fileloop{%
- \promptmesj{!File name? (<return> to stop): }%
- \readline{}\reply
- \ifx\reply\@empty
- \else
- \global\advance\numberoffiles 1 \relax
- \afterfi
- \xp@\listout\xp@{\reply}%
- \fileloop
- \fi
-}
-\fxmesj\DVImesj{%
-*******************************************************************
-* DVI file name is \jobname.dvi *
-*******************************************************************}
-\mesj{
-:---------------------------------------------------------------------
-: This is listout.tex: a tool for printing out `verbatim' listings of
-: text files with reasonably robust, and customizable, handling of
-: overlong lines, tab characters and other special characters, number
-: of columns, font size/line spacing, et cetera.
-:---------------------------------------------------------------------
-: For additional information (e.g., about noninteractive use), or to
-: change option settings, enter
-: m or M
-: to enter the listout.tex menu system. Otherwise just press the
-: <return> key to continue:
-:}
-\message{:?: }
-\readChar{X}\reply
-\if M\reply \else\xp@\printfiles\fi
-\message{Starting up the listout.tex menu system . . .}
-\storexmesj\menuprefix{
-======================================================================
-}
-\storexmesj\menusuffix{
- Q Quit X Exit ? Help
-======================================================================
-}
-\storexmesj\inmenuA{
-}
-\storexmesj\inmenuB{
-}
-\fxmesj\menuhelpmesj{%
-======================================================================
---- <return> means the carriage return, or `Enter', key.
---- When selecting items from a menu with letter labels, you can enter
-your choice in lowercase or uppercase.
---- A prompt that asks for `TeX units' requires in response a
-measurement using the units recognized by TeX, for example
-
- cm mm in pt pc dd cc
-
---- A response of Q will usually send you back to the previous menu.
---- A response of X will get you entirely out of the menu system.
-======================================================================
-To continue, press the <return> key . . .}
-\def\confirm#1{\xmesj{\
-* #1}}
-\fmenu\mainmenu{
- MAIN MENU
-}{
-A Action for new files L Line numbers
-B Breaking lines M Margins
-C Column width/height N Number of columns
-D Date/time form O Orientation
-E Expectoration P Paper size
-F Font, line spacing R Running heads/feet
-G General information S System info
-H Heading/title for each file T Tab treatment
-I Info about current settings V Various other things
-}{}
-\def\moption{\mainmenu \readChar{Q}\reply
- \let\prevmenu\@empty \let\curmenu\@empty \optionexec\reply}
-\fmenu\menuA#1{
-The various actions possible at the beginning of a new file are:
-}{
-S Space (one line of blank space, but not a new column,
- at the beginning of each new file)
-C New column
-P New page
-R New page and right-hand column
-}{
-These options are mutually exclusive. The currently selected option
-is #1. See also option H in the main menu.
-}
-\def\moptionA{\menuA{\newfileoption}%
- \readChar{Q}\reply \optionexec\reply}
-\def\moptionAS{\def\newfileoption{S}%
- \confirm{%
- Each file will start immediately after the preceding file, with\
-* some intervening blank space.}%
- \popoptions\moptionQ}
-\def\moptionAC{\def\newfileoption{C}%
- \confirm{%
- Each file will start at the top of the next column.}%
- \popoptions\moptionQ}
-\def\moptionAP{\def\newfileoption{P}%
- \confirm{%
- Each file will start on a new page.}%
- \popoptions\moptionQ}
-\def\moptionAR{\def\newfileoption{R}%
- \confirm{%
- Each file will start on a new page, in the right-hand column.}
- \popoptions\moptionQ}
-\def\menuBtest{%
- \ifx\spacebreak\@empty
- \ifx\breakingchars\@empty
-Long lines will not be broken.%
- \else
-Extra line breaks will be allowed after the characters\
-\
-\ \ \ \ \ \breakingchars\
- \ifdim\overrun=\z@
- \else\
-(with overrun of \the\overrun\space allowed).%
- \fi
- \fi
- \else
- \ifx\breakingchars\@empty
-Extra line breaks will be allowed at spaces.%
- \else
-Extra line breaks will be allowed at spaces and\
-after the characters\
-\
-\ \ \ \ \ \breakingchars\
- \fi
- \ifdim\overrun=\z@
- \else\
-(with overrun of \the\overrun\space allowed).%
- \fi
- \fi
-}
-\fxmenu\menuB{
-Files being printed sometimes contain unusually long lines.
-You can choose the action that will be taken for overlong lines:
-}{
-N No line breaking allowed
-S Allow breaks at spaces only
-C Allow line breaks at other characters
-O Change the overrun amount
-}{
-Current setting: &\menuBtest
-}
-\def\moptionB{\lettermenu{B}}
-\def\moptionBS{%
- \let\spacebreak\markedbreak \let\breakingchars\@empty
- \overrun\rightmargin \let\noextralinebreaks\FALSE
- \confirm{\menuBtest}\popoptions\moptionQ
-}
-\def\moptionBN{%
- \let\spacebreak\@empty \let\breakingchars\@empty
- \overrun=\rightmargin
- \confirm{\menuBtest}\popoptions\moptionQ
-}
-\def\moptionBO{%
- \promptmesj{Desired overrun value [TeX units] ? }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \overrun\reply\relax
- \confirm{New overrun value = \the\overrun.}%
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionBC{%
- \xmesj{%
-Enter a list of characters. Line breaks will be allowed after any\
-character in the list.\
-Note: if this list is nonempty breaks will be allowed at spaces,\
-even if you didn't include a space in the list.}%
- \readline{}\breakingchars
- \ifx\@empty\breakingchars
- \else \let\spacebreak\markedbreak\fi
- \let\noextralinebreaks\FALSE
- \overrun=\rightmargin
- \confirm{\menuBtest}%
- \popoptions\moptionQ
-}
-\fxmenu\menuC{
-Column width is normally computed automatically, from the specified
-paper width, number of columns, margins, and intercolumn space.
-However, if you provide an explicit value for column width it will
-be used and the right margin will be adjusted as necessary.
-Similarly, column height is computed automatically from the
-paper height and the top and bottom margins, unless you provide an
-explicit value.
-}{
-W Change column width
-H Change column height
-I Change intercolumn space
-}{
-Current column width: &\columnwidth.
-Current column height: &\columnheight.
-Current intercolumn space: &\the&\intercolspace.
-}
-\def\moptionC{\lettermenu C}
-\def\moptionCW{%
- \xmesj{%
-For width in characters, enter just a number; otherwise enter a\
-measurement using standard TeX units. To revert to automatic computing\
-of the column width, give an empty reply (i.e., just press <return>).}%
- \message{Column width: }%
- \readline{}\reply
- \ifx\reply\@empty
- \let\dependentcolwd\TRUE
- \if\dependentrightmargin \computerfc \else \computefc \fi
- \def\reply{A}% report new value through \moptionCWA
- \fi
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \checkinteger\reply\count@
- \ifnum\count@=-\maxdimen
- \else
- \colwd.5em \multiply\colwd\count@\relax
- \edef\columnwidth{\the\count@\space characters}%
- \let\dependentcolwd\FALSE
- \def\reply{A}%
- \fi
- \else
- \colwd\dimen@ \let\columnwidth\reply \let\dependentcolwd\FALSE
- \def\reply{B}%
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionCWA{%
- \confirm{Column width set to \columnwidth.}%
- \popoptions\moptionQ}
-\def\moptionCWB{%
- \confirm{Column width set to \columnwidth\space (= \the\colwd)}%
- \popoptions\moptionQ}
-\def\moptionCH{%
- \xmesj{%
-For height in lines, enter just a number; otherwise enter a\
-measurement using standard TeX units. To revert to automatic computing\
-of the column height, give an empty reply (i.e., just press <return>).}%
- \message{Column height: }%
- \readline{}\reply
- \ifx\reply\@empty
- \let\dependentcolht\TRUE
- \if\dependentbottommargin \computebc \else \computec \fi
- \def\reply{A}% report new value through \moptionCWA
- \fi
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \checkinteger\reply\count@
- \ifnum\count@=-\maxdimen
- \else
- \let\dependentcolht\FALSE
- \colht\baselineskip \multiply\colht\count@
- \advance\colht -\baselineskip \advance\colht\topskip
- \computeb
- \edef\columnheight{\the\count@\space lines}%
- \def\reply{A}%
- \fi
- \else
- \colht\dimen@ \let\columnheight\reply
- \let\dependentcolht\FALSE \computeb
- \def\reply{B}%
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionCHA{%
- \confirm{Column height set to \columnheight.\
-* (Bottom margin adjusted to \the\bottommargin.)}%
- \popoptions\moptionQ}
-\def\moptionCHB{%
- \confirm{Column height set to \columnheight\space (= \the\colht)\
-* (Bottom margin adjusted to \the\bottommargin.)}%
- \popoptions\moptionQ}
-\def\moptionCI{%
- \promptmesj{Enter desired intercolumn space [TeX units]: }%
- \readline{Q}\reply
- \ifx\optiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \intercolspace=\dimen@
- \confirm{%
-Intercolumn space set to \reply\space (= \the\intercolspace).}%
- \if\linenumbers\ifdim\intercolspace<12\p@
- \confirm{\
-* Warning: small intercolumn space, might not be big enough\
-* for line numbers to fit ...}%
- \fi\fi
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmenu\menuD{}{
-D Change date format
-S Change separator character
-Z &\if&\keepleadingzeros\.Omit&\else\.Add&\fi %
-leading zeros in the day and month
-T Change time format
-}{
-Current date and time format is `&\todaysdate &\nowtime'.
-}
-\def\moptionD{\lettermenu D}
-\fxmenu\menuDD{
-Date options:
-}{
-A &\dateA
-B &\dateB
-C &\dateC
-D &\dateD
-E &\dateE
-F &\dateF
-G &\dateG
-H &\dateH
-I &\dateI
-J &\dateJ
-}{
-Current date format is &\todaysdate.
-}
-\def\moptionDD{\menuDD \readChar{Q}\reply
- \count@=\xp@`\reply\relax
- \ifnum\count@>64 \ifnum\count@<75
- \xp@\def\xp@\todaysdate\xp@{\csname date\reply\endcsname}%
- \confirm{New date form: \todaysdate}%
- \def\reply{Q}%
- \fi\fi
- \optionexec\reply
-}
-\def\moptionDS{\promptmesj{!%
-Current separator character between the parts of a date is
-`\datesepchar'.!%
-New separator: }%
- \readchar{}\reply
- \if Q\reply
- \confirm{Date separator char unchanged.}%
- \else
- \if ?\reply
- \else
- \if X\reply
- \confirm{Date separator char unchanged.}%
- \else
- \let\datesepchar\reply
- \confirm{New date format: \todaysdate.}%
- \def\reply{Q}%
- \fi
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionDZ{%
- \if\keepleadingzeros
- \let\keepleadingzeros\FALSE
- \edef\themonth{\number\month}\edef\theday{\number\day}%
- \else
- \let\keepleadingzeros\TRUE
- \edef\themonth{\twodigits\month}\edef\theday{\twodigits\day}%
- \fi
- \confirm{Leading zeros will
- \if\keepleadingzeros NOT \else \fi
- be omitted in day and month numbers}%
- \def\reply{Q}\optionexec\reply
-}
-\fxmenu\menuDT{
-Time format options:
-}{
-A &\timeA (HoursMinutes, 24-hour cycle)
-B &\timeB (Hours:Minutes, 24-hour cycle)
-C &\timeC (12-hour cycle)
-D &\timeD
-E &\timeE
-F &\timeF
-}{
-Current time format is &\nowtime.
-}
-\def\moptionDT{\menuDT \readChar{Q}\reply
- \if A\if B\reply A\else\if C\reply A\else\if D\reply A\else
- \if E\reply A\else\if F\reply A\else\reply\fi\fi\fi\fi\fi
- \xp@\def\xp@\nowtime\xp@{\csname time\reply\endcsname}%
- \def\reply{Z}%
- \fi
- \optionexec\reply
-}
-\def\moptionDTZ{\confirm{New time format: \nowtime}%
- \popoptions\moptionQ}
-\fmenu\menuE{
-This option allows you to save all the current option settings in a
-file for later reuse. If you use the file name `default.los' the saved
-settings will be used as defaults for future runs. Or you can use
-different file names to have multiple saved sets of option settings.
-}{
-S Save settings
-L Load saved settings from file
-D Specify a default directory/folder for .los files
-}{
-The last option allows you to specify a location if you want to
-keep listout.tex and all its .los files in a particular directory or
-folder. This works best if the given location is one searched
-automatically by TeX (e.g., by being included in the `TeX inputs path').
-}
-\def\moptionE{\lettermenu{E}}
-\def\losname{default}
-\def\losdir{}
-
-\def\lossorrymessage{\message{%
-? Could not create `\losdir\losname.los';
-maybe there was a system problem.}}
-\def\currentdir{}
-\def\moptionES{\xmesj{\
-Enter the desired file name. The default name (if you just press the\
-<return> key) is `default'. A file extension `.los' will be added\
-automatically:}%
- \readline{default}\reply
- \edef\losname{\reply}%
- \def\next##1.los##2##3\next{\ifx\relax##2\else
- \def\losname{##1}\fi}
- \xp@\next\losname.los\relax\next
- \confirm{%
-File name: `\losname.los' ---OK? If not, enter n or N to cancel:}%
- \readChar{Y}\reply
- \if Y\reply
- \edef\losfirstline{\xp@\@gobble\string
-\% Option settings for listout.tex, \todaysdate\space\nowtime}%
- \immediate\openout15=\losdir\losname.los \relax
- \logoptionsettings{15}%
- \immediate\closeout15 \relax
- \openin15=\losdir\losname.los \relax
- \ifeof15 \lossorrymessage
- \else \testlocation \fi
- \closein15 \relax
- \fi
- \popoptions\moptionQ
-}
-\def\testlocation{%
- \begingroup
- \catcode`\%=12 \catcode`\\=12 \catcode\endlinechar=9
- \read15 to\next
- \ifx\next\losfirstline
- \confirm{%
-New `\losname.los' file successfully created}%
- \ifx\losdir\@empty
- \testinputtable
- \else
- \message{%
-(in location `\losdir')}%
- \fi
- \else
- \lossorrymessage
- \fi
- \endgroup
-}
-\def\testinputtable{%
- \actively\def\%##1@{%
- \edef\next{\xp@\@gobble\string\%##1}%
- \ifx\next\losfirstline
- \else
- \message{%
-... but guess what: it seems to be inaccessible for \nx@\input by TeX%
- }%
- \fi
- \endinput}%
- \endlinechar`\@ \relax
- \input\losname.los \relax
-}
-\def\moptionEL{\xmesj{\
-Enter the name of the desired option file:}%
- \readline{}\reply
- \ifx\@empty\reply
- \else
- \def\next##1.los##2##3\next{\ifx\relax##2\else
- \def\reply{##1}\fi}
- \xp@\next\reply.los\relax\next
- \xmesj{\
-Attempting to load \reply.los . . .}%
- \input\reply.los\space\relax
- \fi
- \def\reply{Q}\optionexec\reply
-}
-\def\moptionED{\xmesj{\
-Current location name is `\losdir'.\
-Enter a new location name (directory or folder or whatever, depending\
-on your system). For Unix or DOS, make sure you include the final\
-slash. (For DOS, use slashes instead of backslashes.) Just press\
-<return> if you want to leave the current location unchanged:}%
- \readline{}\reply
- \ifx\@empty\reply
- \else
- \let\losdir\reply
- \confirm{Location name is now: `\losdir'}%
- \fi
- \def\reply{Q}\optionexec\reply
-}
-\fxmenu\menuF{}{
-F Change font
-S Change font size
-L Change line spacing
-T Test font availability
-N Add new font
-}{
-Current settings: &\mainfont &\mainfontsize / &\the&\baselineskip.
-}
-\def\moptionF{\lettermenu F}
-\fxmenu\genfontmenu{
-&\firstpart
-Font choices:
-}{
-R Roman
-B Bold
-I Italic
-T Typewriter
-S Sans serif
-}{
-Current choice is `&\fonttoget'.
-}
-\def\getfont#1#2#3{%
- \let\fonttoget#1\def\firstpart{#2}%
- \genfontmenu \readChar{Q}\reply
- \edef\next{\if R\reply roman%
- \else\if B\reply bold%
- \else\if I\reply italic%
- \else\if S\reply sansserif%
- \else\if T\reply typewriter%
- \fi\fi\fi\fi\fi}%
- \ifx\next\@empty
- \else
- \let#1\next \def\reply{Q}%
- \confirm{#3 font is now `#1'.}%
- \fi
- \optionexec\reply
-}
-\def\moptionFF{\getfont\mainfont{%
-Note: Font style `typewriter' is recommended for printing computer\
-program code verbatim because the character set of most non-typewriter\
-fonts lacks certain characters such as { } | \string~ and \\ .}%
-{Main}}
-\fmesj\wholepointsizes{
-Note: Currently only whole point sizes are supported; the fractional
-part in a fractional point size will be ignored. If a font/size
-combination is not available on your system there will be an error
-message later on when we try to load the font.
-}%
-\def\getfontsize#1#2{\wholepointsizes
- \mesj{Current #2 font size is #1.}%
- \promptmesj{Desired font size? }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkinteger\reply\count@
- \ifnum\count@>\z@
- \edef#1{\the\count@}%
- \confirm{New font size for #2: #1}%
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionFS{\getfontsize\mainfontsize{main text}}
-\def\moptionFL{\promptmesj{Desired line spacing [TeX units] ? }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@>\z@
- \normalbaselineskip\dimen@\relax \normalbaselines
- \confirm{New line spacing: \the\normalbaselineskip}%
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmenu\menuFT{
-Font to test load?
-}{
-M main font
-T title font
-L line number font
-P page number font
-H running head font
-F running foot font
-A all of the above
-}{}
-\def\moptionFT{\menuFT
- \readChar{Q}\reply
- \if M\reply
- \testload\mainfont\mainfontsize
- \def\reply{Q}%
- \else\if T\reply
- \testload\titlefont\titlefontsize
- \def\reply{Q}%
- \else\if L\reply
- \testload\linenumberfont\linenumberfontsize
- \def\reply{Q}%
- \else\if P\reply
- \testload\pagenumberfont\pagenumberfontsize
- \def\reply{Q}%
- \else\if H\reply
- \testload\runheadfont\runheadfontsize
- \def\reply{Q}%
- \else\if F\reply
- \testload\runfootfont\runfootfontsize
- \def\reply{Q}%
- \else\if A\reply
- \testload\mainfont\mainfontsize
- \testload\pagenumberfont\pagenumberfontsize
- \testload\titlefont\titlefontsize
- \testload\linenumberfont\linenumberfontsize
- \testload\runheadfont\runheadfontsize
- \testload\runfootfont\runfootfontsize
- \def\reply{Q}%
- \fi\fi\fi\fi\fi\fi\fi
- \optionexec\reply
-}
-\def\testload#1#2{\loadfont#1#2\relax
- \xp@\ifx\csname#1#2\endcsname\nullfont
- \confirm{Unsuccessful font load...}%
- \else
- \confirm{Font successfully loaded.}%
- \fi
-}
-\fxmesj\menuFN{
-To use a custom font you must give two pieces of information: the
-name of the font metrics file (.tfm file), not including the .tfm
-extension, and a magnification (using TeX's standard notation: 1000 =
-100\%, 1200 = 120\%, ...).
-}
-\def\moptionFN{\menuFN
- \promptmesj{OK, first give the font name: }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \let\mainfont\reply
- \def\reply{Q}%
- \promptmesj{Font magnification? [default=1000]: }%
- \readline{1000}\reply
- \if\xoptiontest\reply
- \else
- \checkinteger\reply\count@
- \ifnum\count@>100 %
- \let\mainfontsize\reply
- \def\reply{Q}%
- \fi
- \fi
- \xmesj{\
-Attempting to load new font `\mainfont\ scaled \mainfontsize'; if you\
-get an error message, press RETURN to continue, and try again.\
- }%
- \testload\mainfont\mainfontsize
- \fi
- \optionexec\reply
-}
-\fmesj\menuGa{
-: General information on a couple of subjects:
-:
-: ---Non-interactive usage: Create a driver file containing
-:
-: \input listout
-: % Change options here, if desired
-: \listout{first.file}
-: \listout{second.file}
-: ...
-: \listoutfinish
-: \end
-:
-: The \listoutfinish command is required to support the possibility
-: where multiple files are printed running together without intervening
-: page breaks. To find out how to change options, look at the file
-: default.los.
-:
-: Press <return> to continue . . .}
-\fmesj\menuGb{
-: ---Treatment of control characters and eight-bit characters: The
-: default behavior is to assume no knowledge about the meaning of
-: characters in the range 0--31 and 127--255, because depending on the
-: source, the intended meaning of one of these characters in a given
-: file can vary widely. And the default main font (cmtt) can't handle
-: characters above 127 anyway. In order to preserve vertical alignment
-: when printing with a monospace font (the usual case) control
-: characters aren't printed as multicharacter sequences (e.g. ^^F), but
-: as boxed letters. The first control character encountered in a file
-: will generate a warning/explanatory message on screen. Similarly,
-: characters above ASCII 126 are printed simply as boxed question
-: marks. This behavior can be overridden by changing the main font to a
-: 256-character font and choosing the 8-bit option in the V menu.
-:
-: Press <return> to continue . . .}
-
-\def\moptionG{\menuGa\readline{}\reply\menuGb\readline{}\reply \moptionQ}
-\fxmenu\menuH{}{
-T Turn filename titles&\if&\printtitles off&\else on&\fi
-F Change font of titles
-S Change font size
-C Change capitalization
-}{
-Current settings: %
-&\titlefont &\titlefontsize, capitalization = &\titlecase.
-}
-\def\moptionH{\lettermenu H}
-\def\moptionHT{%
- \if\printtitles \let\printtitles\FALSE
- \else \let\printtitles\TRUE \fi
- \confirm{%
-The name of each file \if\printtitles WILL \else will NOT \fi
-be printed as a title at the\
-* beginning of the file.
-}%
- \if\printtitles\else\popoptions\fi
- \moptionQ
-}%
-\def\moptionHF{\getfont\titlefont{}{Title}}
-\def\moptionHS{\getfontsize\titlefontsize{titles}}
-\fxmenu\menuHC{
-Title capitalization choices:
-}{
-N None
-L Lowercase
-U Uppercase
-}{
-Current choice is &\titlecase.
-}
-\def\moptionHC{\menuHC \readChar{Q}\reply
- \if L\reply
- \def\titlecase{lowercase}%
- \confirm{Capitalization is now: lowercase.}%
- \def\reply{Q}%
- \else\if U\reply
- \def\titlecase{uppercase}%
- \confirm{Capitalization is now: uppercase.}%
- \def\reply{Q}%
- \else\if N\reply
- \def\titlecase{none}%
- \confirm{Capitalization is now: none.}%
- \def\reply{Q}%
- \fi\fi\fi
- \optionexec\reply}
-\fxmesj\menuIa{
-Current option settings:
-Orientation: &\if&\landscape landscape&\else portrait&\fi
-Paper size: &\paperwidth x &\paperheight (&\the\pawd x &\the\paht)
-Margins: Top &\the\topmargin, bottom &\the\bottommargin,
- left &\the\leftmargin, right &\the\rightmargin
-&\number\totalcols columns, column width = &\columnwidth (&\the\colwd),
-Column height: &\columnheight (&\the\colht)
-Intercolumn space: &\the\intercolspace
-Full width of text area: &\the\fullwd
-Main font: &\mainfont &\mainfontsize
-Linespacing: &\the\normalbaselineskip
-Each new file starts%
-&\if\.S&\newfileoption%
- immediately after the previous file.
-&\else&\if\.C&\newfileoption%
- at the top of a new column.
-&\else&\if\.P&\newfileoption%
- on a new page.
-&\else&\if\.R&\newfileoption%
- on the right-hand-side of a new page.
-&\else ??? unknown.
-&\fi&\fi&\fi&\fi%
-File names are &\if&\printtitles&\else\.not&\fi%
- printed as titles at the beginning of each file.
-&\if&\printtitles%
-File name font: &\titlefont &\titlefontsize
-File name capitalization: &\titlecase
-&\fi%
-Date and time print in the form &\todaysdate and &\nowtime.
-Line numbers are turned%
-&\if&\linenumbers ON, font &\linenumberfont &\linenumberfontsize,
- every &\number\linenumberfreq line%
-&\ifnum&\linenumberfreq=1 &\else s&\fi
-&\else OFF&\fi
-Press <return> to continue: }
-\fxmesj\menuIb{
-Page number font: &\pagenumberfont&\pagenumberfontsize
-Running heads are turned &\if&\runheads ON:
- &\the\runhead,
- font &\runheadfont &\runheadfontsize,
- runhead takes up &\the\runheadht from column height.
-&\else OFF &\fi
-Running feet are turned &\if&\runfeet ON:
- &\the\runfoot,
- font &\runfootfont &\runfootfontsize,
- runfoot takes up &\the\runfootht from column height.
-&\else OFF &\fi
-Tabs are printed &\number\spacespertab characters wide, %
-in style `&\tabstyle'.
-&\if&\noextralinebreaks%
-Line breaks are preserved exactly as in the original file.
-&\else%
-Extra line breaks are allowed at spaces and/or other characters.
-Text is allowed to overrun right margin by &\the\overrun.
-&\fi%
-Control-L is defined to &\if\.N&\controlLaction%
-end the current column.
-&\else print as &\if\.L&\controlLaction%
-a one-line vertical space.
-&\else%
-a boxed L.
-&\fi&\fi%
-System type is set to &\systemtype.
-Directory for .los files: &\losdir
-Directory prefix for file name titles: &\dirprefix
-Press <return> to continue: }
-\def\moptionI{\menuIa \readline{}\reply \menuIb
- \readChar{Q}\reply \optionexec\reply}
-\fxmenu\menuL{}{
-T Turn line numbers&\if&\linenumbers off&\else on&\fi
-F Change font of line numbers
-S Change font size of line numbers
-N Change numbering frequency
-}{&\if&\linenumbers
-Current settings: &\linenumberfont &\linenumberfontsize, %
-numbering every&\ifnum&\linenumberfreq=1 line%
-&\else &\the&\linenumberfreq lines&\fi.%
-&\fi%
-}
-\def\moptionL{\lettermenu L}
-\def\moptionLT{%
- \if\linenumbers
- \let\linenumbers\FALSE
- \else
- \let\linenumbers\TRUE
- \fi
- \confirm{Line numbers are switched \if\linenumbers on\else off\fi.}%
- \if\if\linenumbers\ifdim\leftmargin<12\p@ T
- \else\ifnum\totalcols>\@ne
- \ifdim\intercolspace<12\p@ T\else F\fi
- \else F\fi\fi\else F\fi T%
- \confirm{\
-* You might want to check the left margin and/or intercolspace\
-* to make sure there's enough room for the line numbers.}%
- \else\popoptions\fi
- \moptionQ
-}
-\def\moptionLF{\getfont\linenumberfont{}{Line number}}
-\def\moptionLS{\getfontsize\linenumberfontsize{line numbers}}
-\def\moptionLN{%
- \xmesj{%
-Current line numbering frequency is every
-\ifnum\linenumberfreq=1 line%
-\else\ \number\linenumberfreq\ lines\fi.\
-New line numbering frequency? (1 = every line, 2 = every 2 lines,\
-and so forth):}%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkinteger\reply\count@
- \ifnum\count@>\z@
- \linenumberfreq=\count@
- \confirm{New line numbering frequency: \the\linenumberfreq}%
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmenu\menuM{
-Current margin settings: top &\the&\topmargin, left &\the&\leftmargin,
-bottom &\the&\bottommargin, right &\the&\rightmargin.
-}{
-L Change left margin
-T Change top margin
-B Change bottom margin
-R Change right margin
-}{}
-\def\moptionM{\lettermenu M}
-\fxmesj\menuMB#1{
-Current bottom margin is #1.
-If you specify a new bottom margin, column height will be recomputed to
-come as close as possible to the desired value (nearest integer multiple
-of line spacing), taking the currently specified paper height and top
-margin into consideration. To revert to automatic computing of bottom
-margin, give an empty reply (i.e., just press the <return> key).
-Otherwise enter a measurement using TeX units:}
-\def\moptionMB{\menuMB{\the\bottommargin}%
- \readline{}\reply
- \ifx\@empty\reply
- \let\dependentbottommargin\TRUE
- \if\dependentcolht
- \computebc
- \fi
- \def\reply{Q}%
- \else
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen % not a valid dimension
- \else
- \bottommargin\dimen@
- \computec
- \confirm{New column height: \the\colht\
-* New bottom margin: \the\bottommargin}%
- \def\reply{Q}%
- \fi
- \fi
- \fi
- \optionexec\reply
-}
-\fxmesj\menuML#1{
-Current left margin is #1 (measured from the left edge of the
-paper to the left edge of the text).
-<return> to keep the current value, or enter a new value:}
-\def\moptionML{\menuML{\the\leftmargin}%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \leftmargin\dimen@
- \confirm{New left margin: \the\leftmargin}%
- \if\linenumbers\ifdim\leftmargin<12\p@
- \confirm{\
-* Warning: small left margin, might not be big enough for line\
-* numbers to fit ...}%
- \fi\fi
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmesj\menuMR#1{
-Current right margin is #1 (measured from the right edge of the
-paper to the right edge of the text). To revert to automatic
-computation of the right margin, give an empty reply; or enter a new
-value using TeX units (or enter Q or X or ? to quit/exit/get-help).
-New right margin:}
-\def\moptionMR{\menuMR{\the\rightmargin}%
- \readline{}\reply
- \ifx\@empty\reply
- \let\dependentrightmargin\TRUE
- \rightmargin=\leftmargin
- \confirm{New right margin: \the\rightmargin}%
- \def\reply{Q}%
- \fi
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \rightmargin\dimen@
- \confirm{New right margin: \the\rightmargin}%
- \let\dependentrightmargin\FALSE
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmesj\menuMT#1{
-Current top margin is #1 (measured from the top edge of the
-paper to the top of the running head or the text).
-<return> to keep the current value, or enter a new value:}
-\def\moptionMT{\menuMT{\the\topmargin}%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \topmargin\dimen@
- \confirm{New top margin: \the\topmargin}%
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmesj\menuN#1{
-Number of columns: #1.
-<return> to keep the current value, or enter a new value
-(a number greater than 0):}
-\def\moptionN{\menuN{\number\totalcols}%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkinteger\reply\count@
- \ifnum\count@=-\maxdimen
- \else
- \if\ifnum\count@>\z@
- \ifnum\count@<\sixt@@n T\else F\fi\else F\fi T%
- \chardef\totalcols=\count@
- \if\dependentcolwd
- \if\dependentrightmargin \computerfc \else \computefc \fi
- \else
- \computefr
- \fi
- \confirm{%
- Number of columns: \number\totalcols\space
- (column width: \the\colwd, %
-\ifnum\totalcols>\@ne intercolumn space: \the\intercolspace,\
-* \fi total width: \the\fullwd)}
- \def\reply{Q}%
- \else
- \ifnum\count@>20
- \specialhelp\reply
- {Maximum number of columns is 20, sorry...}%
- \else
- \specialhelp\reply
- {Number of columns must be greater than 0}%
- \fi
- \fi
- \fi
- \fi
- \optionexec\reply
-}
-\fxmenu\menuO{
-Current orientation: &\if&\landscape\.landscape.&\else\.portrait&\fi
-}{
-P Switch to portrait orientation
-L Switch to landscape orientation
-}{}
-\def\moptionO{\menuO \readChar{Q}\reply
- \if P\reply
- \if\landscape \let\landscape\FALSE
- \dimen@\paht \paht\pawd \pawd\dimen@
- \fi
- \confirm{Orientation is now: portrait}%
- \def\reply{Q}%
- \else
- \if L\reply
- \if\landscape \else \let\landscape\TRUE
- \dimen@\paht \paht\pawd \pawd\dimen@
- \fi
- \confirm{Orientation is now: landscape}%
- \def\reply{Q}%
- \fi
- \fi
- \optionexec\reply
-}
-\fxmenu\menuP{
-Current paper size: &\paperwidth x &\paperheight
-}{
-W Change paper width
-H Change paper height
-U U.S. letter size paper: 8.5in x 11in
-A A4 paper: 21cm x 29.7cm
-}{}
-\def\moptionP{\lettermenu P}
-\def\moptionPW{\promptmesj{New paper width: }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \ifdim\dimen@>1cm
- \let\paperwidth\reply
- \pawd\dimen@
- \confirm{New paper width: \paperwidth\space(\the\pawd)}%
- \def\reply{Q}%
- \else
- \specialhelp\reply{%
-Sorry, I can't believe you really want a width of \reply!}%
- \fi
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionPH{\promptmesj{New paper height: }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkdimen\reply\dimen@
- \ifdim\dimen@=-\maxdimen
- \else
- \ifdim\dimen@>1cm
- \let\paperheight\reply
- \paht\dimen@
- \confirm{New paper height: \paperheight\space(\the\paht)}%
- \def\reply{Q}%
- \else
- \specialhelp\reply{%
-Sorry, I can't believe you really want a height of \reply!}%
- \fi
- \fi
- \fi
- \optionexec\reply
-}
-\def\moptionPU{%
- \if\landscape
- \paht=8.5truein \pawd=11truein
- \def\paperheight{8.5in}\def\paperwidth{11in}%
- \else
- \paht=11truein \pawd=8.5truein
- \def\paperheight{11in}\def\paperwidth{8.5in}%
- \fi
- \confirm{New paper width: \paperwidth\space(\the\pawd)\
-* New paper height: \paperheight\space(\the\paht)%
-\if\landscape\
-(landscape)\fi}%
- \moptionQ
-}
-\def\moptionPA{%
- \if\landscape
- \paht=21cm \pawd=29.7cm
- \def\paperheight{21cm}\def\paperwidth{29.7cm}%
- \else
- \paht=29.7cm \pawd=21cm
- \def\paperheight{29.7cm}\def\paperwidth{21cm}%
- \fi
- \confirm{New paper width: \paperwidth\space(\the\pawd)\
-* New paper height: \paperheight\space(\the\paht)%
- \if\landscape\
- (landscape)\fi}%
- \moptionQ
-}
-\fxmenu\menuR{
-Running heads are turned &\if&\runheads\.on.
-Running head contents:
-&\the&\runhead
-&\else\.off.
-&\fi%
-Running feet are turned &\if&\runfeet\.on.
-Running foot contents:
-&\the&\runfoot
-&\else\.off.
-&\fi%
-}{
-H Change running heads
-F Change running feet
-}{}
-\def\moptionR{\lettermenu R}
-\fmenu\menuRHorF#1{}{
-C Change running #1 contents
-F Change running #1 font
-S Change running #1 font size
-}{}
-\def\moptionRH{\menuRHorF{head}\readChar{Q}\reply \optionexec\reply}
-\fxmesj\menuRHC{
-Current running head contents:
-&\the&\runhead
-Enter new running head contents (to turn off running heads,
-just press <return>):}
-\def\moptionRHC{\menuRHC
- \xreadline{}\reply
- \if\xoptiontest\reply
- \else
- \global\runhead\xp@{\reply}%
- \ifx\reply\@empty
- \global\let\runheads\FALSE
- \else
- \global\let\runheads\TRUE
- \confirm{New running head:\
- \the\runhead}%
- \fi
- \def\reply{Q}%
- \fi
- \optionexec\reply
-}
-\def\moptionRHF{\getfont\runheadfont{}{Running head}}
-\def\moptionRHS{\getfontsize\runheadfontsize{running heads}}
-\def\moptionRF{\menuRHorF{foot}\readChar{Q}\reply \optionexec\reply}
-\fxmesj\menuRFC{
-Current running foot contents:
-&\the&\runfoot
-Enter new running foot contents (to turn off running feet,
-just press <return>):}
-\def\moptionRFC{\menuRFC
- \xreadline{}\reply
- \if\xoptiontest\reply
- \else
- \global\runfoot\xp@{\reply}%
- \ifx\reply\@empty
- \global\let\runfeet\FALSE
- \else
- \global\let\runfeet\TRUE
- \confirm{New running foot:\
- \the\runfoot}%
- \fi
- \def\reply{Q}%
- \fi
- \optionexec\reply
-}
-\def\moptionRFF{\getfont\runfootfont{}{Running foot}}
-\def\moptionRFS{\getfontsize\runfootfontsize{running feet}}
-\fxmenu\menuS{
-System information. Current system type is &\systemtype;
-directory prefix to be used for all files printed in this run is
-&\ifx&\@empty&\dirprefix\.null.&\else
-&\dirprefix&\fi
-}{
-S Change system type
-D Change directory prefix
-}{}
-\def\moptionS{\lettermenu{S}}
-\fxmenu\menuSS{
-System type options:
-}{
-D DOS
-M Macintosh
-U Unix
-V VAX/VMS
-O Other
-}{
-Currently this information is only used to help in printing directory
-names that may occur in the titles printed at the beginning of each
-file. Current system type is &\systemtype.
-}
-\def\moptionSS{\menuSS
- \readChar{Q}\reply
- \if D\reply \def\systemtype{DOS}\def\currentdir{./}\def\reply{Q}%
- \else\if M\reply
- \def\systemtype{Macintosh}\def\currentdir{}\def\reply{Q}%
- \else\if U\reply
- \def\systemtype{Unix}\def\currentdir{./}\def\reply{Q}%
- \else\if V\reply
- \def\systemtype{VAX/VMS}%
- \edef\currentdir{sys\string $disk:[]}\def\reply{Q}%
- \else \def\systemtype{other}\def\currentdir{}\def\reply{Q}%
- \fi\fi\fi\fi
- \optionexec\reply
-}
-\fxmesj\menuSD{
-Current directory/folder prefix for all file names is
-&\ifx&\@empty&\dirprefix\.null.&\else
- `&\dirprefix'
-&\fi
-Enter the new directory prefix below.
-(Enter Q to quit without changing the prefix.)}
-\def\moptionSD{%
- \menuSD
- \readline{}\reply
- \let\next\reply \changecase\uppercase\next
- \if\xoptiontest\next
- \let\reply\next
- \else
- \let\dirprefix\reply
- \ifx\dirprefix\@empty
- \confirm{Directory prefix is now null.}%
- \else
- \confirm{New directory name:\
- \dirprefix\
- }%
- \fi
- \def\reply{Q}%
- \fi
- \optionexec\reply
-}
-\fxmenu\menuT{
-Currently tabs will print as &\tabstyle.
-The horizontal extent of each tab will be %
-&\number&\spacespertab spaces.
-}{
-T Change tab representation
-N Change the number of spaces per tab
-}{}
-\def\moptionT{\lettermenu T}
-\fmenu\menuTT#1{
-Tab representation choices:
-}{
-B Blank space
-. Dots
-- Dashed line
-H Hrulefill
-T Tiny`TAB's fill
-}{
-These are better understood by trying them out than by having them
-explained in words. Current tab style is `#1'.
-}
-\def\reportnewtabstyle#1{%
- \chardef\tabselect=#1 \relax
- \confirm{Tab style is now `\tabstyle'}%
- \def\reply{Q}%
-}
-\def\moptionTT{\menuTT\tabstyle
- \readChar{Q}\reply
- \if B\reply
- \reportnewtabstyle{0}%
- \else\if .\reply
- \reportnewtabstyle{1}%
- \else\if -\reply
- \reportnewtabstyle{2}%
- \else\if H\reply
- \reportnewtabstyle{3}%
- \else\if T\reply
- \reportnewtabstyle{4}%
- \fi\fi\fi\fi\fi
- \optionexec\reply
-}
-\def\moptionTN{%
- \promptmesj{Enter the desired number of spaces per tab: }%
- \readline{Q}\reply
- \if\xoptiontest\reply
- \else
- \checkinteger\reply\count@
- \ifnum\count@=-\maxdimen
- \else
- \ifnum\count@<256
- \chardef\spacespertab=\count@
- \confirm{%
- The number of spaces per tab is now \number\spacespertab.}%
- \def\reply{Q}%
- \else
- \mesj{Sorry, spaces per tab cannot be more than 255.}%
- \def\reply{}% repeat the prompt
- \fi
- \fi
- \fi
- \optionexec\reply
-}
-\fmenu\menuV{}{
- 8 Treatment of 8-bit characters
- L Treatment of Control-L characters
-}{}
-\def\moptionV{\lettermenu{V}}
-\fxmenu\menuVL{
-Three choices are offered for the treatment of Control-L characters:
-}{
- B Print a boxed L (same treatment as other control characters)
- L Print one line of space
- N End current text column, start a new column
-}{
-Current setting is &\controlLaction.
-}
-\def\moptionVL{\menuVL
- \readChar{Q}\reply
- \if B\reply
- \let\controlLaction\reply
- \confirm{Control-L characters will print as boxed L's}%
- \else\if L\reply
- \let\controlLaction\reply
- \confirm{Control-L characters will print as a one-line space}%
- \else\if N\reply
- \let\controlLaction\reply
- \confirm{%
-Control-L characters will perform a `formfeed' [new column] action}%
- \fi\fi\fi
- \def\reply{Q}\optionexec\reply
-}
-\expandafter\fxmenu\csname menuV8\endcsname{
-Two choices are offered for the treatment of 8-bit characters, that
-is, characters in the range 128--255:
-}{
- A Print according to the current font
- B Print a boxed question mark
-}{
-Current setting is &\eightbitaction.
-For option A, you must be careful to also select a font that is capable
-of printing 8-bit characters (see option F in the main menu); otherwise,
-8-bit characters will disappear silently from the printed output with
-nothing more than a warning in the TeX log.
-}
-\expandafter\def\csname moptionV8\endcsname{%
- \csname menuV8\endcsname
- \readchar{Q}\reply
- \if A\reply \def\eightbitaction{A}%
- \else\if B\reply \def\eightbitaction{B}%
- \fi\fi
- \def\reply{Q}\optionexec\reply
-}
-\moption
-\printfiles
-\endinput
-%%
-%% End of file `listout.tex'.