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authorKarl Berry <karl@freefriends.org>2006-01-12 23:58:04 +0000
committerKarl Berry <karl@freefriends.org>2006-01-12 23:58:04 +0000
commit440d102927608f99ff10892dc8754b4f432f4aab (patch)
tree720c540625653f34e6870c8e446e63beb0ff368d /Master
parentb39b97b2d27cbfd91ecbb0669d02af08c3342a93 (diff)
lineno
git-svn-id: svn://tug.org/texlive/trunk@1041 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master')
-rw-r--r--Master/texmf-dist/tex/latex/lineno/ednmath0.sty202
-rw-r--r--Master/texmf-dist/tex/latex/lineno/edtable.sty571
-rw-r--r--Master/texmf-dist/tex/latex/lineno/lineno.sty3441
-rw-r--r--Master/texmf-dist/tex/latex/lineno/vplref.sty72
4 files changed, 4286 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/latex/lineno/ednmath0.sty b/Master/texmf-dist/tex/latex/lineno/ednmath0.sty
new file mode 100644
index 00000000000..363c6c6aa5c
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/lineno/ednmath0.sty
@@ -0,0 +1,202 @@
+%% Macro package `ednmath0.sty' for LaTeX2e,
+%% copyright (C) 2004 Uwe L\"uck,
+%% http://www.contact-ednotes.sty.de.vu
+%% --author-maintained;
+%% math support for `lineno.sty' and `ednotes.sty'.
+%%
+\def\fileversion{v0.2b} \def\filedate{2005/01/10}
+%% This program can be redistributed and/or modified under the
+%% terms of the LaTeX Project Public License distributed from
+%% CTAN archives in directory macros/latex/base/lppl.txt; either
+%% version 1.3a of the License, or any later version.
+%% The latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% There is NO WARRANTY.
+%% This code is very EXPERIMENTAL!
+%%
+%% Please report bugs, problems, and suggestions via
+%%
+%% http://www.contact-ednotes.sty@web.de
+%
+%% * MAIN FEATURE *
+%
+% lineno.sty's \linelabel and ednotes.sty's commands are enabled
+% to work in math mode if it's "entered in outer mode"
+% (including `displaymath' and `equation' environments).
+% (lineno.sty is the package by Stephan Boettcher.)
+% They will even work in tabular environments that are adjusted
+% to notes by package `edtable.sty'.
+%
+% CAVEATS:
+% -- Does not work yet in environments like LaTeX's
+% `eqnarray'. (This could probably repaired along the lines
+% of Edtable.sty--we're short of time and will try later.)
+% -- Useful error messages when (i) math mode is entered from
+% inner mode or when (ii) a math display gets not line number
+% are missing at present.
+%
+%% * USAGE: *
+%
+% * Most simple: *
+% --If you are working with ednotes and want to use its
+% commands in math mode, load ednotes.sty--version 0.8
+% onwards--with its package option `mathnotes'.
+% --If you don't work with ednotes, only with lineno, you
+% get the main feature of making \linelabel work in math mode
+% by loading lineno.sty--version 4.1 onwards--with its
+% package option `mathrefs'.
+%
+% * Switch off and on: *
+% To reduce danger resulting from missing error messages
+% ("caveat" above), you may switch these new math facilities
+% off by \NoNotesToMath where you don't expect to need them.
+% You may switch them on again by \NotesToMath where you want
+% to use them, being aware of the danger. Both commands work
+% locally, so you can replace one of them by enclosing it in
+% a group. E.g., even, after \NoNotesToMath you can use an
+% environment as follows:
+% \begin{NotesToMath}
+% <text>
+% \end{NotesToMath}
+% (I am not quite sure that this is useful.)
+%
+% * Customize ellipsis: *
+% ednotes' \lemmaellipsis is changed to expand to
+% \mathlemmaellipsis when entering math, and this is preset
+% to be LaTeX's \mathellipsis. (This is three dots as
+% \mathinner.) You can change this by redefining
+% \mathlemmaellipsis, e.g.:
+% \renewcommand{\mathlemmaellipsis}{\cdots}
+% If you need \cdots as the ellipsis at a single place only,
+% you may, of course, use the `<...>' option of \<, e.g.:
+% $ x = \Anote{a\<<\cdots>bcd\>e}{Indeed?} - y $
+%
+% * Customize note mode: *
+% For variant readings, you may want that the note is
+% usually set in math mode--so you may want that you
+% needn't type the dollar signs in the note text.
+% Note that you can do this by customizing \notefmt,
+% and you can do this by customizing \Anotefmt (e.g.)
+% to have this feature for \Anote only.
+%
+
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{ednmath0}[\filedate\space\fileversion\space
+ math support for lineno/ednotes (ul)]
+%
+%% User commands:
+\def\NotesToMath{\let\@LN@mathhook\@LN@labelinmath
+ \@bsphack \@esphack
+% For \begin{NotesToMath}
+}
+\def\NoNotesToMath{\@bsphack
+ \def\@LN@mathhook{\@parmoderr\@gobble}%
+ \@esphack
+}
+\def\endNotesToMath{\@bsphack\@Esphack}
+\let\endNoNotesToMath\endNotesToMath
+%
+%% Core code for lineno.sty:
+\@ifundefined{@LN@postlabel}{%
+ \PackageError{ednmath0}{%
+ Bad lineno.sty version%
+ }{%
+ lineno.sty from 2004/08/16 or later
+ must be loaded earlier.%
+ }%
+}{%
+ \def\@LN@labelinmath#1{%
+ \ifmmode
+ \@LN@postlabel{#1}%
+ \else
+ \@parmoderr
+ \fi
+ }
+}
+%
+%% Core code for ednotes.sty:
+\@ifundefined{@EN@note}{%
+% v0.01 sent a warning in this case. Considered superfluous now.
+}{%
+ \def\@EN@themathlemmatag{%
+ \ifmmode
+ \toks@\expandafter{\@EN@lemmatag}%
+ \edef\@EN@lemmatag{%
+ $%
+ \def\noexpand\lemmaellipsis{%
+ \noexpand\mathlemmaellipsis}%
+ \the\toks@
+ $%
+ }%
+% \expandafter \def \expandafter \@EN@lemmatag
+% \expandafter {\expandafter $\expandafter
+% \def \expandafter \lemmaellipsis \expandafter {%
+% \expandafter \mathlemmaellipsis \expandafter }%
+% \@EN@lemmatag $}%
+ \fi
+ }
+% To be sure, \lemmaellipsis doesn't need to be changed when
+% ednotes `\<...\>' feature is not used. Though I prefer to
+% use one hook only in ednotes for both situations, with and
+% without `\<...\>'.
+%
+% The final \unskip in ednotes' \@EN@lemmatag would undo a final
+% \quad. That's OK: outside math the same happens.
+% In v0.01, \NoNotesToMath undid ednotes changes for math mode.
+% However, re-appearence of \linelabel error messages suffices.
+%
+% Now add lemma switch to the left of \[No]NotesToMath:
+ \toks@\expandafter{\NotesToMath}
+ \edef\NotesToMath{%
+ \let \noexpand\@EN@mathlemmatag \noexpand\@EN@themathlemmatag
+ \the\toks@
+ }
+% \typeout{\string\NotesToMath: \meaning\NotesToMath}
+ \toks@\expandafter{\NoNotesToMath}
+ \edef\NoNotesToMath{%
+ \let \noexpand\@EN@mathlemmatag \relax
+ \the\toks@
+ }
+% \typeout{\string\NoNotesToMath: \meaning\NoNotesToMath}
+}
+% We need no extra device for a choice for users whether the *note*
+% should be set in math mode or in horizontal mode by default
+% (which might depend on the kind ["layer"] of notes).
+% This can be done already by customization of ednotes' \notefmt.
+% However, we might change ednotes' default \notefmt to default
+% \renewcommand*{\notefmt}[1]{$#1$}
+%
+\let\mathlemmaellipsis\mathellipsis
+%% TODO: Since when has LaTeX provided \mathellipsis?
+%% -> \Needs...
+%
+% Default:
+\NotesToMath
+%
+\endinput
+
+%% TODO: Without \linenumberdisplaymath, in displaymath,
+%% an error should be shown. Use, e.g., that in a displaymath
+%% \ifinner is false.
+%% TODO: E.g., by changing \everymath, perhaps can be warned
+%% that the math group is in a box already, so the vertical
+%% items will get lost.
+%% TODO: Adjust `eqnarray' (in Edtable?) as well.
+
+%% VERSION HISTORY:
+v0.01 2004/08/16 First version, sent to Christian.
+v0.02 2004/08/16 Considerably simplified for ednotes.
+ 2004/08/19 Added ellipsis stuff, documentation, and
+ instructions. Uncapitalized package names.
+ Added \end[No]NotesToMath.
+ 2004/08/20 Added \@bsphack and \@esphack; corrected
+ ednotes extension (too much deleted, completely
+ wrong), introducing \@EN@themathlemmatag.
+v0.02b .../08/31 Rearranged preamble concerning maintenance.
+v0.1 2004/09/20 Removed mentions of `linenox0.sty'.
+v0.2 2004/10/07 Removed another mention of `linenox0.sty';
+ Instructions: `lineno' or `ednotes.sty' option.
+v0.2a 2004/11/07 LPPL v1.3a.
+v0.2b 2005/01/10 Contact via http.
+
+
diff --git a/Master/texmf-dist/tex/latex/lineno/edtable.sty b/Master/texmf-dist/tex/latex/lineno/edtable.sty
new file mode 100644
index 00000000000..206347539e7
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/lineno/edtable.sty
@@ -0,0 +1,571 @@
+%% `edtable.sty'---Uwe L"uck, direction Christian Tapp.
+%% LaTeX package for tables with line numbers and
+%% editorial notes.
+%%
+%% Copyright (C) 2003-2005 Uwe L"uck--author-maintained.
+%%
+\def\fileversion{1.3c} \def\filedate{2005/10/03}
+%%
+%% This file can be redistributed and/or modified under
+%% the terms of the LaTeX Project Public License; either
+%% version 1.3 of the License, or any later version.
+%% The latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% We did our best to help you, but there is NO WARRANTY.
+%%
+%% Please send your comments via
+%%
+%% http://www.contact-ednotes.sty.de.vu
+%%
+%% * USAGE: *
+%
+% *Requirements/overview:*
+%
+% The package is made for the background of the LaTeX2e macro
+% package and enhances functionality of the following packages:
+% 1.) Stephan I. B"ottcher's `lineno.sty' for printing line
+% numbers in the margin and a \label version \linelabel
+% relating labels to line numbers;
+% 2.) our `ednotes.sty' for indicating variant readings and
+% other editorial remarks in separate footnote apparatuses;
+% 3.) David Carlisle's `longtable.sty' for multi-page tables.
+% %% TODO: supertabular etc.!?
+% 4.) our `ltabptch.sty' for a patch of `longtable.sty'
+% (i.e., optionally, see below).
+%
+% Actually, only the first package is necessary for using the
+% present one. The present one needs your line numbering commands
+% according to the first one and its documentation to which we
+% refer here. We likewise refer to the remaining packages for the
+% details of their functionality.
+%
+% `lineno.sty' version 4.1 and (in case it is used) `ednotes.sty'
+% version 0.8 (onwards) are needed. For obtaining recent versions
+% of required packages, see the CTAN folder
+% /macros/latex/contrib/ednotes.
+%
+% *Install/load:*
+% 1.) To be used, the present file must be put into a folder
+% that (La)TeX searches. You should have obtained a file
+% containing more detailed hints about this.
+% 2.) We recommend loading this file *not* by
+% \usepackage[<options>]{edtable} but by loading `lineno.sty'
+% or `ednotes.sty' with package option `edtable'.
+% 3.) To use the package options `longtable' and
+% `nolongtablepatch' that are described below, enter them
+% as options for `lineno.sty' or `ednotes.sty'.
+%
+% *User Commands:*
+%
+% 1. The package defines an environment `edtable' -- for its
+% syntax we consider two cases:
+% (a) Let <stdtable> be a tabular environment "like `tabular'".
+% "Like" here means: (i) we have tested it with `tabular', but
+% it should work with many more (e.g., from the `array' and
+% `tabularx' packages) -- which share certain properties of
+% implementation and requirements. Sorry, you must try, or we
+% hope you will (and tell us). (For wizards: <stdtable> may
+% probably be anything using a single \halign and \tabskip=0pt.)
+% Definitively:
+% (ii) LaTeX's standard `array' and other environments are *not*
+% "like" `tabular'. Namely, environments that work only in math
+% mode are not meant here. They are considered below in `b.'.
+% (iii) `longtable' from the `longtable' package of the `tools'
+% bundle neither is meant. An option of the present package
+% deals with it as described below. Neither `supertabular' is
+% meant.
+% (iv) In general, usage with tabular environments that can
+% break across pages as in (iii) is not recommended, at least
+% when working with `ednotes.sty'. Even if some worked here, a
+% shortcoming with `ednotes.sty' would be that the footnotes can
+% appear on bad pages.
+% -- Now the syntax is:
+% \begin{edtable}{<stdtable>}<args><entries>\end{edtable}
+% -- where <args> and <entries> are usual arguments and entries
+% for <stdtable>. So an example is:
+% \begin{edtable}{tabular}{cc}
+% left upper & right upper \\ left lower & right lower
+% \end{edtable}
+% This produces just what <stdtable> does in an extra line,
+% only adding line numbers in the margin and processing `ednotes'
+% commands in the entries appropriately.
+% (b) Let <stdarray> be an "array environment" like -- standard
+% LaTeX's `array'! "Like" here means (i) ... analogously to
+% <stdtable> above. (ii) "Text" ... oh, sorry, this is not clear
+% to me at present, and I am in a hurry. %% TODO
+% (iii) Nothing from the `amsmath' package seems to work here,
+% sorry, I have tried a lot ... (iv) For standard LaTeX's
+% `eqnarray', it is better to try the `linenomath' environment
+% of `lineno.sty' [with package option `mathlines']. Its
+% modifications in `amsmath' produce (at best) a spurious line
+% number with the `linenomath' environment (up to now).
+% -- Now the syntax is:
+% \begin{edtable}[<$$$>]{<stdarray>}
+% <args><entries>\end{edtable}
+% -- where <args> and <entries> are usual arguments and entries
+% for <stdarray>. <$$$> can be one of `$' or `$$'. Indeed, the
+% <stdtable> syntax above (without [<$$$>]) *does not work*
+% inside $...$ or $$...$$. -- An example:
+% \begin{edtable}[$$]{array}{cc}
+% a_{11} & a_{12} \\ a_{21} & a_{22}
+% \end{edtable}
+% Now, this produces just what <stdarray> does in an extra line
+% etc. as with <stdtable>. However, \linelabel and `ednotes.sty'
+% footnotes may need the `mathrefs' option of `lineno.sty'. For
+% the difference between `[$]' and `[$$]', see below.
+%
+% 2. When working with `ednotes.sty', in
+% \Anote{L1\<L2\>L3}{NOTE}
+% L2 may contain &'s and \\'s, but L1, L3 must not! Analogously
+% for \Bnote, etc., \Anotelabel...\donote..., etc. -- Well this
+% holds for <stdtable>, hardly for <stdarray> ... %% TODO
+%
+% 3. On positioning: You may have wondered about `extra line'
+% above. This means that `edtable' starts a new line at
+% \begin{edtable} and at \end{edtable}. %% TODO: sure!?
+% (a) It should be placed within a `center', `flushleft', or
+% `flushright' environment for proper (vertical) spacing, but
+% also works without. However, with <stdarray> and optional
+% parameter `$$' of `edtable' (i.e., \begin{edtable}[$$]...),
+% you can obtain the usual math display spacing *within a
+% paragraph*; especially, the vertical space is less when the
+% previous line is short ... and so on.
+% (b) Horizontal positioning of line numbers (usually) needs a
+% second run (after changing a table)! %% TODO: automatic warning.
+% (For wizards: It may fail if some of \leftskip, \rightskip,
+% \linewidth, and \@totalleftmargin are used in an unusual way.)
+% A <dimen> register \ETextraoffset is provided whose value is
+% 0pt by default and which additionally moves line numbers
+% to the left (right) if given a positive (negative) value.
+% %% TODO: any use?
+%
+% *Package options:*
+%
+% 1. Option `longtable' adjusts the `longtable' environment
+% defined by David Carlisle's longtable.sty for use with
+% `lineno.sty' and `ednotes.sty'. The option makes `longtable'
+% environments appear with line numbers in the margin, according
+% to `lineno.sty', and process `ednotes.sty' commands if line
+% numbering is active according to `lineno.sty'.
+% [We maintain an alternative package with just this function
+% in a slightly different implementation.] %% -> ulnltab.sty.
+% Lemmas may go across table entries as with `edtable' (see above).
+% ---There might be options like `supertabular' for adjusting
+% other tabular environments that cannot be handled by the
+% `edtable' environment provided here---they have not been
+% implemented yet! %% TODO
+%
+% 2. Option `nolongtablepatch' avoids loading/asking for
+% `ltabptch.sty'. I.e.: according to LaTeX bugs database,
+% tools/3180 and tools/3485, there have been problems with
+% vertical spacing around `longtable' environments. By default
+% the present package loads our `ltabptch.sty' or asks for it.
+% Option `nolongtablepatch' overrides this. This is useful when
+% you don't want to have the patch, especially when you use an
+% "emergency stop" installation of TeX.
+%
+% *Wizard interface:*
+% Macros \@ET@makeLineNumber, \@ET@use@outerhook,
+% \@ET@execute@outerhook, \@ET@ampnotes \@ET@startlinewith,
+% \@ET@trivialize@linelabel are provided as tools for adjusting
+% tabular environments for use with `lineno.sty' and
+% `ednotes.sty'. \@ET@step@linenumber is \let \stepLineNumber
+% (from `lineno.sty'), but could be used as a hook for
+% something different. See Environment `edtable' and Option
+% `longtable' below for examples of application.
+% %% TODO: specification here.
+%
+%
+%% * Acknowledgements: *
+%
+% Stephan I. B"ottcher told us how to do it in extensive discussion
+% and by providing some first code lines. We changed these essentially
+% in some respects, but kept his general ideas and some parts of his
+% macros, the latter even without knowing what we are doing.
+%
+% v1.3 is due to a request by Martin Brandenburg.
+%
+% * Now for internals: *
+%
+\NeedsTeXFormat{LaTeX2e}[1994/12/01]
+% 1994/12/01: \newenvironment* etc. %% TODO: more recent needed?
+\ProvidesPackage{edtable}[\filedate\space v\fileversion\space
+ arrays with lineno + ednotes (ul)]
+%
+% Alternative ideas for implementation:
+% 1. There is a German package `TABMAC' enhancing `EDMAC' (cf.
+% documentation of `ednotes.sty'). We could have rewritten its
+% macros so it would work with `lineno.sty' and `ednotes.sty'
+% in place of `EDMAC'. [TODO: "tabmac.sty"]
+% 2. We redefine `longtable' by Option `longtable' because
+% there seems to be only one reasonable use of the `longtable'
+% environment in the course of a critical edition. This may be
+% different for environments like `array' and `tabular' which
+% can be used within text lines. Therefore, these environments
+% are not redefined.
+% 3. One might use \everycr, however: (a) it is executed
+% before the first row, (b) it is executed in fake lines that
+% `longtable' uses.
+% 4. As an alternative to \everycr, there is the approach of
+% redefining \cr and \crcr for setting \noalign. This needs
+% redefining \@tabularcr etc.---not nice. We use this approach
+% here for `longtable' which uses a stretching \tabskip.
+% For \tabskip=0pt, we attach line numbers by a template.
+%
+% \RequirePackage{lineno}[2004/10/06]
+% Wanted to check lineno version--causes unknown option error.
+% See LaTeX bug latex/3730.
+
+% Options:
+
+%% TODO: underful page with `longtable.sty'!?
+\let\if@ET@longtable\iffalse % \newif\if@ET@longtable@
+\DeclareOption{longtable}{\let\if@ET@longtable\iftrue}
+\let\if@ET@ltabptch\iftrue
+\DeclareOption{nolongtablepatch}{\let\if@ET@ltabptch\iffalse}
+\ProcessOptions
+
+% Redefine \longtable if option:
+\if@ET@longtable
+ % Stephan's direction for attaching a line number to each row
+ % is using \noalign in the course of \\.
+ % However, (1) the user should not worry about closing the table
+ % with \\ or without, and (2) the line number thing should not
+ % happen twice if \\ is the last token before \end{longtable}.
+ % Our solution: attach something to the beginning of \endlongtable
+ % which attaches line number unless an unsucceeded \\ has done it.
+ % This thing is activated by each row start and turned off by \\.
+ % Since the switch at row start may happen to be in a pbox,
+ % let it act globally on \endlongtable. (The \crcr at the beginning
+ % of \endlongtable must not be changed directly, since original
+ % \crcr may be required in table entries using \oalign etc.)
+ %
+ \RequirePackage{longtable}%
+% \IfFileExists{longtable.sty}{\RequirePackage{longtable}}%
+% {\RequirePackage{longtabl}}%
+% For Atari problem, it suffices to rename `longtable.sty'
+% into `longtabl.sty'.
+%
+% Patch for tools/3180 and tools/3485 of LaTeX bug database:
+ \if@ET@ltabptch
+ \IfFileExists{ltabptch.sty}{\RequirePackage{ltabptch}}{%
+ \PackageError{edtable}{%
+ ltabptch.sty (for improving spacing around\MessageBreak
+ longtable) missing! Be sure to use it always\MessageBreak
+ or never!%
+ }{%
+ To omit ltabptch.sty *and* escape this error,\MessageBreak
+ use package option `nolongtablepatch'.%
+ }%
+ }
+ \fi
+ \let\@ET@@longtable\longtable
+ \def\longtable{%
+ \ifLineNumbers
+ \expandafter\@ET@longtable
+ \else
+ \let\@ET@sw@cr\@ET@crcr % ... in \endlongtable.
+ \expandafter\@ET@@longtable
+ \fi
+ }
+ \def\@ET@longtable{%
+ % Since we have made it anyway, we use the method of redefining
+ % \halign for inserting the activating row start as well.
+ % However, redefinition must be repeated before every \LT@bchunk.
+ % \longtable and \LT@get@withs are good places for this.
+ \@ET@startlinewith\@ET@sw@cr@on
+ \@ET@trivialize@linelabel
+ \@ET@use@outerhook
+ \@ET@ampnotes
+ \let\LT@tabularcr\@ET@LT@tabularcr
+ \expandafter\def\expandafter\LT@get@widths\expandafter
+ {\LT@get@widths\@ET@startlinewith\@ET@sw@cr@on}
+ % Admittedly, we could make it less of a hack by using @{...}
+ % ---we could then leave \LT@get@widths untouched.
+ \@ET@@longtable
+ }
+ \def\@ET@sw@cr@on{\global\let\@ET@sw@cr\@ET@cr@attach}
+ % We are hacking a longtable version offering
+ % \def\LT@tabularcr{%
+ % \relax\iffalse{\fi\ifnum0=`}\fi
+ % \@ifstar
+ % {\def\crcr{\LT@crcr\noalign{\nobreak}}\let\cr\crcr
+ % \LT@t@bularcr}%
+ % {\LT@t@bularcr}}
+ % We need a redefinition of \cr which is not overridden by \@ifstar:
+ \def\@ET@LT@tabularcr{%
+ \relax\iffalse{\fi\ifnum0=`}\fi
+ \def\cr{\@ET@sw@cr}%
+ % So \crcr is affected by change of \@ET@sw@cr, cf. below.
+ \let\crcr\cr
+ \@ifstar
+ {\gdef\@ET@sw@nobreak{\nobreak
+ \global\let\@ET@sw@nobreak\relax}%
+ % {\def\cr{\@ET@sw@cr\noalign{\nobreak}}\let\cr\crcr
+ % Why didn't this work? %% TODO: try shorter again.
+ \LT@t@bularcr}%
+ \LT@t@bularcr
+ % {\let\cr\@ET@sw@cr \let\crcr\cr
+ % \LT@t@bularcr}% This accompanied \def\cr... above.
+ }
+ % Attach \@ET@sw@cr to beginning of \endlongtable:
+ \expandafter\def\expandafter\endlongtable\expandafter
+ {\expandafter\@ET@sw@cr\endlongtable}
+ \def\@ET@cr@attach{% Actually attaching line numbers.
+ \@ET@crcr\noalign{% Basically Stephan's approach.
+ % If we were not careful, following box containing line number
+ % could fool interline glue after longtable, even if tools/3485
+ % is repaired in some way. This box should have same depth as
+ % the line composed previously.
+ \nobreak %% \@ET@ex... might cause page break. 2003/10/30.
+ \setbox\z@\@ET@makeLineNumber
+ \ht\z@-\prevdepth \dp\z@\prevdepth \box\z@
+ \@ET@step@linenumber
+ \global\let\@ET@sw@cr\@ET@crcr % ... if called by \\.
+ % This also resets the \crcr starting \LT@echunk following
+ % \@xargarraycr or \@yargarraycr in \LT@argtabularcr.
+ % \let...\relax seems to suffice at well, but in case ...
+ \@ET@execute@outerhook %% 2003/10/30.
+ \@ET@sw@nobreak
+% \@ET@execute@outerhook
+ }%
+ }
+ \let\@ET@crcr\crcr
+ \global\let\@ET@sw@nobreak\relax % Just to remind ...
+\fi
+
+\let\@ET@step@linenumber\stepLineNumber
+% \def\@ET@step@linenumber{\global\advance\c@linenumber\@ne}
+\def\@ET@makeLineNumber{\hb@xt@\z@{\makeLineNumber}}
+%% TODO: export to lineno.sty!?
+% Special \halign:
+% For `array' etc., we insert line numbers by a leftmost template.
+% @{...} in the last argument of `array' etc. is difficult for this
+% since `tabular*' has an additional argument. So we redefine
+% \halign to put something to the right of the next \bgroup.
+% Now, as a macro, \halign would break in an \edef or \xdef.
+% Horribly, this danger has become quite real in longtable.sty's
+% definition of \LT@bchunk. Only its latest version 4.10 has
+% preceded \halign by a \noexpand (for mathtext.sty which
+% redefines \halign as well). We need not rely on such a
+% provision if we let \halign expand to \the<token register>
+% for some token register. However, using \toks@ or \@temptokena
+% is neither very safe---might be filled by macro ahead with
+% something new. So reserve an own token register.
+\newtoks\@ET@toks
+\@ET@toks{\@ET@specialhalign}
+% v1.3: In 'AMSmath', there are \halign's followed by explicit
+% left braces. Thus '\def\@ET@specialhalign#1\bgroup{%' broke.
+%% TODO ...
+\def\@ET@specialhalign{%
+ \ifmeasuring@ \expandafter\@firstoftwo
+% v1.3 2005/03/04, for `amsmath'.
+ \else \expandafter\@secondoftwo
+ \fi
+ {\let\halign\@ET@@halign \halign}%
+ {\@ifnextchar\bgroup\@ET@replace@arg\@ET@sphalign@to}}
+%% TODO: change back, commenting out code above, report
+%% error with `alignat'.
+% \@ifnextchar\bgroup\@ET@replace@arg\@ET@sphalign@to}
+% If `amsmath' not loaded (v1.3):
+\AtBeginDocument{\@ifundefined{measuring@true}{%
+ \let\ifmeasuring@\iffalse}\relax}
+\def\@ET@replace@arg#1{%
+ \def\@EN@tempa{#1}\def\@EN@tempb{\bgroup}% Corr. after v1.3b.
+ \ifx\@EN@tempa\@EN@tempb
+ \def\@EN@tempa{\@ET@sphalign@to\bgroup}%
+ \else
+ \def\@EN@tempa{\@ET@sphalign@to{#1}}%
+% This may be wrong, #1 might be `t' from `to' ...
+ \fi
+ \@EN@tempa}
+\def\@ET@sphalign@to#1\bgroup{%
+ \let\halign\@ET@@halign % Reset for nested arrays.
+ \halign#1\bgroup
+% \ifmeasuring@\else % For `amsmath', moved backwards.
+ \@ET@startline % [Wizard interface, via \@ET@starlinewith.]
+% \fi
+}
+% Wizard interface:
+\def\@ET@startlinewith{% Next token precedes preamble.
+% \let\@ET@@halign\halign % Or \AtBeginDocument?
+% ... indeed: bad loop with long longtable (\LT@get@widths!?)
+ \def\halign{\the\@ET@toks}%
+ \let\@ET@startline
+}
+\AtBeginDocument{\let\@ET@@halign\halign}
+% Or save it at start of environment only
+% (don't repeat inside longtable).
+%
+% Outer hook for inserts: (wizard interface)
+\def\@ET@execute@outerhook{% To be placed outside inner mode.
+ \@ET@outerhook \global\let\@ET@outerhook\@empty
+}
+\global\let\@ET@outerhook\@empty % Just to remind: global!
+% \@EN@hookfn (ednotes) sends to outer hook:
+\def\@ET@use@outerhook{% Wizard interface.
+ \def\@EN@hookfn{\g@addto@macro\@ET@outerhook}%
+}%% TODO: move last line to `ednotes', \let\@ET@use...\@empty.
+%% But this requires re-installing both packages
+%% at the same time. See the `ampnotes' thing as well.
+%
+% Trivialize \linelabel: (wizard interface)
+\def\@ET@trivialize@linelabel{\let\linelabel\@ET@linelabel}
+\def\@ET@linelabel{%
+ \protected@edef\@currentlabel{\theLineNumber}%
+ \label
+}
+% Change ampersand at \Anote etc.: (wizard interface)
+%% 2003/10/31.
+% & is changed by \Anote etc. No \begin...\endgroup,
+% next \\ or & after % note/donote command switches back.
+% ---Global change seems to break table setup.
+\begingroup
+\gdef\@ET@hideamps{\catcode`\&\active}
+\@ET@hideamps
+\gdef\@ET@ampnotes{%
+ \let&\@ET@hideamp
+ %% & would be undefined after \\ in lemma.
+ \let\@ET@EN@rnote\@EN@note
+ \def\@EN@note{\@ET@hideamps\@ET@EN@rnote}%
+ \let\@ET@EN@rnotelb\@EN@notelabel
+ \def\@EN@notelabel{\@ET@hideamps\@ET@EN@rnotelb}%
+}
+%% TODO: & and \\ in \@EN@lemmaexpands!?
+\endgroup
+\def\@ET@hideamp{&}
+
+\newenvironment*{edtable}[2][]{%
+% #1 $ or $$, #2 standard environment name.
+%% TODO: star version!? cf. lineno.sty's `numquote'.
+ \def\@ET@mode{#1}%
+ \def\@ET@currenvir{#2}%
+ \ifhmode \ifnum\the\lastpenalty=-\@M\else
+% \par must be executed for printing/stopping line numbers:
+ \@centercr\relax \noindent
+ \fi \fi
+ \ifvmode \noindent \fi % Otherwise linenumbers are indented
+% -- however, not recommended.
+ \@ET@use@outerhook
+ \@ET@trivialize@linelabel
+ \@ET@ampnotes
+ \@ET@startlinewith\@ET@normal@startline
+ \global\advance\c@linenumber\m@ne % Stepping correction.
+% (Must come after closing previous paragraph.)
+% Calculate offset:
+ \global\advance\c@ET@array\@ne
+% Saving/calling width of table (`longtable's algorithm).
+% Test if there is \@flushglue on the left (center or flushleft):
+ \edef\@EN@tempa{\the\@flushglue}%
+% ... v1.3: fool this for "$$".
+ \in@{$$}{#1\@nil}% \in@{#1}{#2} searches #1 in #2#1 ...
+ \edef\@EN@tempb{\the\ifin@\@flushglue\else\leftskip\fi}%
+ \ifx\@EN@tempa\@EN@tempb
+% Assume \@ET@offset is 0pt else here.
+ \@ET@offset\linewidth
+ \advance\@ET@offset-%
+ \@ifundefined\@ET@arraywidth@csn % Shortened for v1.3.
+ {\linewidth\G@refundefinedtrue
+ \PackageWarningNoLine{edtab}{^^JLine numbers at
+ \@ET@currenvir\space need \jobname.aux}}%
+ {\csname\@ET@arraywidth@csn\endcsname}%
+% Test if \@flushglue on the right (center):
+% ... v1.3: fool it again. Repeat \in@ in case ...
+ \in@{$$}{#1\@nil}%
+ \edef\@EN@tempb{\the\ifin@\@flushglue\else\rightskip\fi}%
+ \ifx\@EN@tempa\@EN@tempb \divide\@ET@offset\tw@ \fi
+ \fi
+ \advance\@ET@offset\@totalleftmargin
+ \advance\@ET@offset\ETextraoffset % Offset ready.
+ \setbox\@tempboxa\hbox\bgroup
+% v1.3: `alignat' complains later when this is \vbox instead.
+% \vbox\bgroup % Tried in vain.
+ \ifx\@ET@mode\@empty\else $\fi
+ \csname#2\endcsname
+}{%
+ \csname end\@ET@currenvir \endcsname
+ \ifx\@ET@mode\@empty\else $\fi
+ \egroup
+ \@ET@step@linenumber % Stepping correction.
+ \if@filesw
+ \immediate\write\@auxout{%
+ \gdef\expandafter\noexpand
+ \csname\@ET@arraywidth@csn\endcsname
+ {\the\wd\@tempboxa}}%
+%% TODO: warning if changed!?
+ \fi
+% No automatic line number at array line:
+ \nolinenumbers
+ \@ET@mode\ensuremath{\vcenter{\box\@tempboxa}}\@ET@mode % v1.3.
+ \@ET@execute@outerhook
+ \ifhmode \@centercr\relax \fi
+% \par must be executed for proper restart of printing line numbers
+% (think so).
+ \@endpetrue % Outside \@flushglue environment, avoid indent ahead.
+%% TODO: slightly change for math mode around? Or give an error
+%% in math mode.
+}
+%% TODO: make \edtable \outer!?
+\def\@ET@normal@startline{%
+ \@ET@step@linenumber
+ \llap{\@ET@makeLineNumber \hskip\@ET@offset}%
+}
+\newdimen\@ET@offset
+\newdimen\ETextraoffset
+%% TODO: export to lineno.sty!?
+\newcount\c@ET@array
+\def\@ET@arraywidth@csn{ET@a@\romannumeral\c@ET@array}
+%
+%% TODO: .dtx
+\endinput
+
+%% VERSION HISTORY:
+v0.22 2003/01/13 First version, named `edtab02.sty', sent around,
+ together with ednotes.sty.
+v0.23 2003/01/22 Added version history.
+v0.24 2003/01/27 Copyright notice.
+%%% v0.3 2003/03/03 Requires linenox0.sty. %% RETREATED
+%% TODO: reconsider, see `lineno[x].sty'.
+v0.25 2003/03/05 Added <ednotes.sty@web.de>.
+v0.26 2003/03/23 Added \@ET@startlinewith to wizard command list;
+ moved redefinition \LT@get@widths from option code
+ into \@ET@longtable so this really happens in
+ line number mode only; moved \let\@ET@@halign\halign
+ from \@ET@startlinewith to \AtBeginDocument.
+v0.27 2003/06/02 Added \ifvmode \noindent \fi to `edtable' definition;
+ 2003/06/10 added `lemma cannot run' to instructions.
+v0.28 2003/10/31 \@ET@cr@attach: moved \@ET@execu..., added \nobreak.
+ Added \@ET@ampnotes and documentation: now working
+ across entries.
+v1.0 2004/05/13 `ednotes.sty' etc., updated copyright. Renamed as
+ `edtable.sty' for TUGboat article.
+ \RequirePackage{lineno}, changed doc. accordingly.
+ Removed `may be released under different name'.
+v1.10 2004/07/27 Looking for `longtabl.sty' for my Atari!
+ 2004/08/22 Added warning (screen/documentation) concerning
+ ltabptch.sty.
+ 2004/08/23 Added suggestion of option `nolongtablepatch';
+ LPPL v1.3.
+v1.2 2004/08/31 Rearranged preamble concerning maintenance,
+ removed `preliminary release'.
+ 2004/10/06 \newif -> \let...; option `nolongtablepatch';
+ changed documentation accordingly and for
+ loading edtable.sty by lineno/ednotes option;
+ \let\@ET@step@linenumber\stepLineNumber; use
+ \ifLineNumbers.
+ 2004/10/07 Needed version numbers.
+ 2004/10/08 ltabptch warning -> error!
+ 2004/10/11 Disabled \RequirePackage{lineno}[...]; undid
+ the `longtabl.sty' thing from 2004/07/27.
+ 2004/10/12 latex/3730.
+v1.2a 2004/11/07 LPPL v1.3a.
+v1.2b 2005/01/10 Contact via http.
+v1.3b 2005/03/04 Support for environments like `array'
+ environment. The description of `edtable' was
+ wrong in this respect!
+v1.3 2005/03/07 Adaptations in documentation, and extended usage
+ instructions very much, correcting some
+ errors as well. Acknowledgement to M. B.
+v1.3a 2005/03/09 Corrected numbering in `usage'.
+v1.3c 2005/03/15 \@centercr\relax, TODO on math mode.
+ 2005/04/09 `editory' -> `editorial'.
diff --git a/Master/texmf-dist/tex/latex/lineno/lineno.sty b/Master/texmf-dist/tex/latex/lineno/lineno.sty
new file mode 100644
index 00000000000..f9cd1db616a
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/lineno/lineno.sty
@@ -0,0 +1,3441 @@
+ \iffalse; awk '/S[H]ELL1/' lineno.sty|sh;exit;
+ ... see bottom for .tex documentation ...
+
+Macro file lineno.sty for LaTeX: attach line numbers, refer to them.
+ \fi
+\def\fileversion{v4.32} \def\filedate{2005/10/17} %VERSION
+
+%%% Copyright 1995--2003 Stephan I. B"ottcher <boettcher@physik.uni-kiel.de>;
+%%% Copyright 2002--2005 Uwe L"uck, http://www.contact-ednotes.sty.de.vu
+%%% for version 4 and code from former Ednotes bundle
+%%% --author-maintained.
+%%%
+%%% This file can be redistributed and/or modified under
+%%% the terms of the LaTeX Project Public License; either
+%%% version 1.3a of the License, or any later version.
+%%% The latest version of this license is in
+%%% http://www.latex-project.org/lppl.txt
+%%% We did our best to help you, but there is NO WARRANTY.
+%
+%%% $Id: lineno.sty,v 3.14.2.2 2004/09/13 19:30:39 stephan Exp $ %% was v4.00.
+% \title{\texttt{\itshape
+%% %% (UL 2004/10/09:) Italic TT is evil
+%% %% ... or nice front page layout!?
+%%
+% lineno.sty \ \fileversion\ \filedate
+% \unskip}\\\ \\
+% A \LaTeX\ package to attach
+% \\ line numbers to paragraphs
+% \unskip}\author{%
+% Stephan I. B\"ottcher
+% \\ Uwe L\"uck
+% \unskip}\date{%
+% boettcher@physik.uni-kiel.de
+% \\ http://contact-ednotes.sty.de.vu
+%% \\ stephan@nevis.columbia.edu
+%% \\ Stephan.Boettcher@cern.ch
+% \\}
+%
+% \documentclass[a4paper,12pt]{article}%D
+% \usepackage{lineno}%D
+%% %% (New v4.00)
+% \catcode`\_\active\let_~
+%% %% Beware math!? (/New v4.00)
+% \def~{\verb~}
+% \let\lessthan<
+% \catcode`\<\active
+% \def<#1>{$\langle${\itshape#1}\/$\rangle$}
+% \catcode`\|\active
+%% (New v4.1: \tt star; in box anyway.)
+% \def|#1{\ttfamily\string#1}
+%% \def|#1{{\ttfamily\string#1}}
+%% (/New v4.1)
+% \newenvironment{code}
+% {\par\runninglinenumbers
+% \modulolinenumbers[1]%
+% \linenumbersep.3em
+% \footnotesize
+% \def\linenumberfont
+% {\normalfont\tiny\itshape}}
+% {}
+%% %% (New v4.00)
+% {\makeatletter \gdef\scs#1{\texttt
+% {\protect\@backslashchar#1}}}
+% \def\old{\par\footnotesize}
+%% %% (/New v4.00)
+%% %% (New v4.1)
+% {\catcode`\/\active
+% \gdef\path{\begingroup\catcode`\/\active
+% \let/\slash\dopath}
+% \gdef\dopath#1{\slash\unpenalty#1\endgroup}}
+%% %% (/New v4.1)
+%
+% \begin{document}%D
+%% \DocInput{lineno}%D
+% \pagewiselinenumbers
+% \maketitle
+% \pagestyle{headings}
+% \tableofcontents
+% \sloppy
+%
+%% %% New v4.00: `...section{%' + \unskip
+% \section{%
+% Introductions
+%% %% New v4.00: `s'
+% \unskip}
+%
+% (New v4.00) Parts of former first section
+% have been rendered separate subsections for package
+% version_v4.00. (/New v4.00)
+%
+% \subsection{%
+% Introduction to versions $\textrm{v}\lessthan4$
+% \unskip}
+%
+% This package provides line numbers on paragraphs.
+% After \TeX\ has broken a paragraph into lines there will
+% be line numbers attached to them, with the possibility to
+% make references through the \LaTeX\ ~\ref~, ~\pageref~
+% cross reference mechanism. This includes four issues:
+% \begin{itemize}
+% \item attach a line number on each line,
+% \item create references to a line number,
+% \item control line numbering mode,
+% \item count the lines and print the numbers.
+% \end{itemize}
+% The first two points are implemented through patches to
+% the output routine. The third by redefining ~\par~, ~\@par~
+% and ~\@@par~. The counting is easy, as long as you want
+% the line numbers run through the text. If they shall
+% start over at the top of each page, the aux-file as well
+% as \TeX s memory have to carry a load for each counted line.
+%
+% I wrote this package for my wife Petra, who needs it for
+% transcriptions of interviews. This allows her to
+% precisely refer to passages in the text. It works well
+% together with ~\marginpar~s, but not too well with displaymath.
+% ~\footnote~s are a problem, especially when they
+% are split, but we may get there.
+% (New v4.00 UL) Version v4.00 overcomes the problem, I believe.
+% (/UL /New v4.00)
+%
+% lineno.sty works
+% surprisingly well with other packages, for
+% example, ~wrapfig.sty~. So please try if it
+% works with whatever you need, and if it does,
+% please tell me, and if it does not, tell me as
+% well, so I can try to fix it.
+%
+% \subsection{%
+% Introduction to versions v4.00ff. (UL)
+% \unskip}
+%
+% ~lineno.sty~ has been maintained by Stephan until version_v3.14.
+% From version_v4.00 onwards, maintenance is shifting towards
+% Uwe L\"uck (UL), who is the author of v4\dots code and of v4\dots
+% changes in documentation. This came about as follows.
+%
+% Since late 2002, Christian Tapp and Uwe L\"uck have employed
+% ~lineno.sty~ for their ~ednotes.sty~, a package supporting
+% critical editions---cf.
+% \[\mbox{\tt
+% http://ednotes.sty.de.vu
+% \unskip}\]
+% ---while you find ~ednotes.sty~ and surrounding files in
+% CTAN folder \path{macros/latex/contrib/ednotes}.
+%
+% Soon, some weaknesses of ~lineno.sty~ showed up, mainly since
+% Christian's critical editions (using ~ednotes.sty~) needed lots
+% of ~\linelabel~s and footnotes. (These weaknesses are due to
+% weaknesses of \LaTeX's ~\marginpar~ mechanism that Stephan
+% used for ~\linelabel~.) So we changed some ~lineno.sty~
+% definitions in some extra files, which moreover offered new
+% features. We sent these files to Stephan, hoping he would take
+% the changes into ~lineno.sty~. However, he was too short of time.
+%
+% Writing a TUGboat article on Ednotes in 2004, we hoped to
+% reduce the number of files in the Ednotes bundle and so asked
+% Stephan again. Now he generously offered maintenance to me, so
+% I could execute the changes on my own.
+%
+% The improvements are as follows:
+% \begin{itemize}\item
+% [(i)] Footnotes placement approaches intentions better
+% (footnotes formerly liked to pile up at late pages).
+% \item
+% [(ii)] The number of ~\linelabel~s in one paragraph is no longer
+% limited to 18.
+% \item
+% [(iii)] ~\pagebreak~, ~\nopagebreak~, ~\vspace~, and the star
+% and optional versions of ~\\~ work as one would expect
+% (section_\ref{s:MVadj}). %% Added for v4.1
+% \item
+% [(iv)] A command is offered which chooses the first line number
+% to be printed in the margin
+% (subsection_\ref{ss:Mod}). %% Added for v4.1
+% \item
+% [(v)] (New v4.1) \LaTeX\ tabular environments (optionally)
+% get line numbers as well, and you can refer to them in the
+% usual automatic way. (It may be considered a shortcoming that,
+% precisely, \emph{rows} are numbered, not lines.---See
+% subsection_\ref{ss:Tab}.)
+% \item
+% [(vi)] We are moving towards referring to math items
+% (subsection_\ref{ss:MathRef} and the hooks in
+% subsection_\ref{ss:LL}).
+% (/New v4.1)
+% \end{itemize}
+% (Thanks to Stephan for making this possible!)
+%
+%% Unpublish:
+%% You may trace the earlier developments of these changes by
+%% requesting our files ~linenox0.sty~, ~linenox1.sty~, and
+%% ~lnopatch.sty~. Most of our changes have been in ~linenox0.sty~.
+%% Our ~linenox1.sty~ has extended ~linenox0.sty~ for one single
+%% purpose in a not very stable way.
+%%% (See ~\linenumberpar~ below).
+%% ~lnopatch.sty~ has done the first line number thing referred
+%% to in case_(iv) up to now.
+%% (New v4.1)
+%% Case_(v) earlier was provided by our ~edtab02.sty~---now
+%% called ~edtable.sty~.
+%% (/New v4.1)
+%
+% Ednotes moreover profits from Stephan's offer with regard
+% to the documentation of our code which yielded these
+% improvements formerly. This documentation now becomes
+% printable, being part of the ~lineno.sty~ documentation.
+%
+% Of course, Stephan's previous ~lineno.sty~ versions were a great
+% and ingenious work and exhibit greatest \TeX pertise. I never
+% could have done this. I learnt a lot in studying the code when
+% Christian pointed out strange output results and error
+% messages, and there are still large portions of ~lineno.sty~
+% which I don't understand (consider only pagewise numbering of
+% lines). Fortunately, Stephan has offered future help if
+% needed.---My code for attaching line numbers to \emph{tabular
+% environments} (as mentioned above, now still in
+% ~edtable.sty~) %% %% TODO
+% developed from macros which Stephan and Christian experimented
+% with in December 2002. Stephan built the basics.
+% (However, I then became too proud to follow his advice only to
+% use and modify ~longtable.sty~.)
+%
+% There are some issues concerning use of counters on which I
+% don't agree with Stephan and where I would like to change the
+% code if ~lineno.sty~ is ``mine'' as Stephan offered. However,
+% Stephan is afraid of compatibility problems from which, in
+% particular, his wife could suffer in the near future. So he
+% demanded that I change as little as possible for my first
+% version. Instead of executing changes that I plan I just offer
+% my opinions at the single occasions. I hope to get in touch
+% this way with users who consider subtle features vital which I
+% consider strange.
+%
+% On the other hand, the sections on improvements of the
+% implementation have been blown up very much and may be tiring
+% and litte understandable for mere \emph{users}. These users
+% may profit from the present presentation just by jumping to
+% sections_\ref{s:Opts} and_\ref{s:UserCmds}. There is a user's
+% guide ulineno.tex which may be even more helpful, but it has
+% not been updated for a while. %% TODO
+%
+% \subsection{%
+% Availability
+% \unskip}
+%
+% In case you have found the present file otherwise than from
+% CTAN: A recent version and documentation of this package
+% should be available from CTAN folder
+% \path{macros/latex/contrib/lineno}.
+% Or mail to one of the addresses at top of file.
+%
+% \subsection{%
+% Introductory code
+% \unskip}
+%
+% This style option is written for \LaTeXe, November 1994 or later,
+% since we need the ~\protected@write~ macro.
+%
+% (New v4.00) And we use ~\newcommand*~ for
+% controlling length of user macro arguments, which has been
+% available since December 1994.
+%%
+
+\NeedsTeXFormat{LaTeX2e}[1994/12/01]
+%% [1994/11/04]
+\ProvidesPackage{lineno}
+ [\filedate\space line numbers on paragraphs \fileversion]
+% (/New v4.00)
+%%
+%% History of versions:
+%% v1.00 1995/03/31 SIB: first release for Petra's interview transcriptions
+%% v1.01 1995/10/28 SIB: added ~pagewise~ mode
+%% v1.02 1995/11/15 SIB: added ~modulo~ option
+%% v1.03 1995/12/05 SIB: pagewise: try to reduce the hash-size requirements
+%% v2.00 1995/12/06 SIB: .. it works, new user interface
+%% v2.01 1996/09/17 SIB: put into CVS
+%% v2.02 1997/03/17 SIB: add: \@reinserts, for footnotes
+%% v2.04 1998/03/09 SIB: add: linenomath environment
+%% v2.05 1998/04/26 SIB: add: prevgraf test
+%% v2.06 1999/03/02 SIB: LPPL added
+%% v3.00 1999/06/11 SiB: include the extension in the main file
+%% v3.01 1999/08/28 SiB: \@reinserts -> \holdinginserts
+%% v3.02 2000/03/10 SiB: \@LN@output
+%% v3.03 2000/07/01 SiB: \@LN@ExtraLabelItems, hyperref
+%% v3.04 2000/12/17 SiB: longtable compatibility.
+%% v3.05 2001/01/02 SiB: [fleqn] detection.
+%% v3.05a 2001/01/04 SiB: [fleqn] detection reverted for eqnarray.
+%% v3.06 2001/01/17 SiB: [twocolumn] mode support.
+%% v3.07 2001/07/30 SiB: [hyperref] option obsoleted.
+%% v3.08 2001/08/02 SiB: linenomath wrapping for \[ \]
+%% v3.08a 2001/08/04 SiB: linenomath wrapping for \[ \] fixed
+%% v3.08b 2002/01/27 SiB: enquotation typo fix
+%% v3.09 2003/01/14 SIB: hyperref detection fix
+%% v3.10 2003/04/15 FMi: \MakeLineNo fix for deep boxes
+%% v3.10a 2003/11/12 Uwe Lück: \lineref typo fix
+%% v4.00 2004/09/02 UL: included linenox0, linenox1, lnopatch code with
+%% documentation, usually indicated by `New v4.00';
+%% discussions of old code, indicated by `UL';
+%% LPPL v.1 -> LPPL v1.3, `program' -> `file';
+%% first lines with \filedate and \fileversion,
+%% according nawk lines; `November 1994 or later',
+%% some earlier documentation typos (including a few
+%% bad minus signs), { -> {% and } -> \unskip} at
+%% line ends (so, e.g., alignment in TOC works); \scs.
+%% 2004/09/03 UL: removed everything which indicated that the
+%% present file were named `lineno4.sty'.
+%% v4.1 2004/09/19 UL: Inserted Stephan's identification line, removed
+%% some TODOs and remarks from v4.00.
+%% 2004/10/04 UL: Added acknowledgement for Daniel Doherty;
+%% `(New v4.00)' with [|\firstlinenumber]; changed
+%% TODOs; Refining -> Redefining (\vadjust).
+%% 2004/10/05 UL: ednmath0 -> mathrefs; \catcode`\~ -> \active;
+%% \path; refined section on options `mathrefs';
+%% changes in introduction.
+%% 2004/10/06 UL: Changed/removed TODOs, e.g., for edtable.sty.
+%% 2004/10/11 UL: Reminders: linenox0/1/lnopatch.sty obsolete;
+%% \tt star in list of commands.
+%% 2004/10/12 UL: Corrected blank lines in lineno.tex.
+%% 2004/10/19 UL: Fixed minor typos; remark on \if@LN@edtable.
+%% v4.1a 2004/11/07 UL: LPPL v1.3a.
+%% v4.1b 2004/11/13 UL: Comment on \outputpenalty values.
+%% v4.1c 2005/01/10 UL: Contact via http.
+%% v4.11 2005/02/20 UL: Error message with \linelabel when not numbering.
+%% 2005/03/07 UL: Removed \linelabel from ss:Tab heading, consider
+%% marginal line numbers as well, revised ss:Tab.
+%% Added a few lines on missing explanations to
+%% s:UserCmds. Corrected some code alignments.
+%% 2005/03/08 UL: Require recent edtable.sty.
+%%
+
+%% v4.2 2005/03/21 UL: "Physical page" counter works with \include.
+%% 2005/04/17 UL: Raised options section above extensions section
+%% (v4.00 disabled `displaymath' option);
+%% third arg for \@ifundefined{mathindent};
+%% "bunch of options";
+%% 2005/04/24 UL: compatibility with tamefloats; vplref.sty.
+%% 2005/04/25 UL: \number -> \the; wondered -> $$; subsec. appbas;
+%% CrtlLN sec -> subsec.; \newcommand* wherever ...;
+%% doc. on `other output routines' and `addpageno'
+%% (this changed from `varioref').
+%% 2005/04/27 UL: =1\relax -> =\@ne, 0\relax ..., \hb@xt@,
+%% \ifx\@@par\@@@par -> \ifLineNumbers, typos,
+%% \pagestyle{headings}, LaTeX -> \LaTeX.
+%% v4.21 2005/04/28 UL: linenomath section: removed wrong \else's,
+%% \holding...: \thr@@, \@LN@outer@holdins, \global.
+%% v4.22 2005/05/01 UL: \unvbox\@outputbox; \@LN@col without #1,
+%% 2005/05/08 UL: global/local \internall..., \resetl... global,
+%% shortened discussions of this and of \newcounter.
+%% 2005/05/09 UL: corr.: doc. typo, version history, bad lines;
+%% percent; \chardef for modulo,
+%% \value{firstlinenumber}.
+%% v4.3 2005/05/10 UL: \@backslashchar -> \char`\\ in \scs.
+%% 2005/05/11 UL: \linenumbers sets ...outer@holdins; tidied up
+%% documentation regarding earlier versions.
+%% 2005/05/12 UL: `linenomath' without spurious number above;
+%% `displaymath' default; edmac homepage ->
+%% ednotes.sty.de.vu, \endlinenomath without
+%% numbers: no change of \holdinginserts;
+%% \linelabel doesn't go to .aux or mark,
+%% hyperref detected; undone 2005/05/10 (bad mark).
+%% 2005/05/13 UL: Reworked hyperref detection (new subsec.).
+%% 2005/05/15 UL: More typo fixes, corrected terrible confusions in
+%% the discussion (v4.22/v4.3) of \new/\stepcounter;
+%% new subsec. in `Line number ...'; another
+%% implementation of `hyperref' detection.
+%% 2005/05/16 UL: Final minor changes.
+%% v4.31b /06/14 UL: Extended explanation of \firstlinenumbers
+%% and package options; \@LN@ifgreat@critical;
+%% \modulolinenumbers*. Sent to Ednotes.news only.
+%% v4.31 2005/06/15 UL: \modulolinenumbers* with \firstlinenumber{1};
+%% " -> ``/''; more doc. on \firstlinenumber .
+%% 2005/06/20 UL: Typo fix.
+%% 2005/10/01 UL: Warning about \mod...* with pagewise mode.
+%% v4.31a /10/02 UL: Minor changes of appearance of doc., e.g.,
+%% \[ for $$.
+%% v4.32b /10/15 UL: Support for \addvspace; removed comments that
+%% had been invisible already for some time;
+%% made clear with which environments the
+%% linenomath environment is not needed.
+%% v4.32ab /10/15 UL: Observe \if@nobreak with support for \addvspace.
+%% v4.32 2005/10/17 UL: Just made it official and sent it to CTAN.
+%%
+%% Acknowledgements:
+%% v3.06: Donald Arseneau, pointed to mparhack.sty.
+%% v3.07+: Frank Mittelbach, points out inconsistencies in the
+%% user interface.
+%% v3.10: Frank Mittelbach \MakeLineNo fix for deep boxes
+%% v4.00: Daniel Doherty points out clash of \pagewise... with resetting
+%% page number.
+%% v4.21: Much testing work by Erik Luijten.
+%% v4.3: `displaymath' default by Erik Luijten's suggestion.
+%% v4.31: \modulolinenumbers* is an idea of Hillel Chayim Yisraeli's.
+%% v4.32: Support for \addvspace due to Saravanan M.'s observation.
+%
+% \section{%
+% Put the line numbers to the lines
+% \unskip}
+%
+% (New v4.00) This section contained the most
+% basic package code previously. For various purposes of
+% version_4\dots, much of these basics have been to be modified.
+% Much of my (UL's) reasoning on these modifications has been to
+% be reported. Sorry, the present section has been blown up
+% awfully thus and contains ramifications that may be difficult
+% to trace. We add some ~\subsection~ commands in order to cope
+% with the new situation. (/New v4.00)
+%
+% \subsection{%
+% Basic code of \texttt{lineno.sty} \scs{output}
+% \unskip}\label{ss:output}
+%
+% The line numbers have to be attached by the output
+% routine. We simply set the ~\interlinepenalty~ to $-100000$.
+% The output routine will be called after each line in the
+% paragraph, except the last, where we trigger by ~\par~.
+% The ~\linenopenalty~ is small enough to compensate a bunch of
+% penalties (e.g., with ~\samepage~).
+%
+% (New v3.04) Longtable uses
+% ~\penalty~$-30000$. The lineno penalty range was
+% shrunk to $-188000 \dots -32000$. (/New v3.04)
+% (New v4.00) New values are listed below (11111f.). (/New v4.00)
+
+\newcount\linenopenalty\linenopenalty=-100000
+
+%% TODO v4.3+:
+% (UL) Hm. It is never needed below
+% that this is a counter. ~\def\linenopenalty{-100000\relax}~
+% would do. (I guess this consumes more memory, but it
+% is more important to save counters than to save memory.)
+% I was frightened by ~-\linenopenalty~ below, but indeed
+% \TeX\ interprets the string ~--100000~ as 100000.
+% Has any user or extension package writer ever called
+% ~\linenopenalty=xxx~, or could I really change this?---The
+% counter is somewhat faster than the macro. Together with the
+% compatibility question this seems to support keeping the
+% counter. (???)
+%% Note that Stephan chose ~\mathchardef~ below,
+%% so his choice above seems to have been deliberate.
+%% <- no point, \mathchardef token is fast.
+% (/UL)
+
+\mathchardef\linenopenaltypar=32000
+
+% So let's make a hook to ~\output~, the direct way. The \LaTeX\
+% macro ~\@reinserts~ puts the footnotes back on the page.
+%
+% (New v3.01) ~\@reinserts~ badly
+% screws up split footnotes. The bottom part is
+% still on the recent contributions list, and the
+% top part will be put back there after the bottom
+% part. Thus, since lineno.sty does not play well
+% with ~\inserts~ anyway, we can safely experiment
+% with ~\holdinginserts~, without making things
+% much worse.
+%
+% Or that's what I thought, but: Just activating
+% ~\holdinginserts~ while doing the ~\par~ will
+% not do the trick: The ~\output~ routine may be
+% called for a real page break before all line
+% numbers are done, and how can we get control
+% over ~\holdinginserts~ at that point?
+%
+% Let's try this: When the ~\output~ routine is
+% run with ~\holdinginserts=3~ for a real page
+% break, then we reset ~\holdinginserts~ and
+% restart ~\output~.
+%
+% Then, again, how do we keep the remaining
+% ~\inserts~ while doing further line numbers?
+%
+% If we find ~\holdinginserts~=$-3$ we activate it again
+% after doing ~\output~. (/New v3.01)
+%
+% (New v3.02) To work with
+% multicol.sty, the original output routine is now
+% called indirectly, instead of being replaced.
+% When multicol.sty changes ~\output~, it is a
+% toks register, not the real thing. (/New v3.02)
+%
+% (New v4.00) Two further complications are added.
+%%
+%% TODO v4.3+: Or three, ~\@nobreakfalse~ after ~\MakeLineNo~
+%% for getting rid of ~\my@nopagebreak~.
+% \begin{itemize}\item
+% [(i)] Problems with footnotes formerly resulted from
+% \LaTeX's ~\@reinserts~ in ~\@specialoutput~ which Stephan's
+% ~\linelabel~ called via the ~\marginpar~ mechanism.
+% \item
+% [(ii)] \LaTeX\ commands using ~\vadjust~ formerly didn't work
+% as one would have hoped. The problem is as follows:
+% Printing the line number results from
+% a box that the output routine inserts at the place of the
+% ~\interlinepenalty~. ~\vadjust~ items appear \emph{above} the
+% ~\interlinepenalty~ (\TeX book p._105). So ~\pagebreak~, e.g.,
+% formerly sent the line number to the next page, while the
+% penalty from ~\nopagebreak~ could not tie the following line,
+% since it was screened off by the line number box.---Our trick
+% is putting the ~\vadjust~ items into a list macro from which
+% the output routine transfers them into the vertical list,
+% below the line number box.
+% \end{itemize}
+% In this case_(ii), like in case_(i), footnotes would suffer
+% if ~\holdinginserts~ were non-positive. Indeed, in both
+% cases_(i) and_(ii) we tackle the footnote problem by extending
+% that part of Stephan's output routine that is active when
+% ~\holdinginserts~ is positive. This extension writes the line
+% number ~\newlabel~ to the .aux file (which was formerly done
+% under $~\holdinginserts~=-3$) and handles the ~\vadjust~
+% items.---To trigger ~\output~ and its ~\linelabel~ or, resp.,
+% ~\vadjust~ part, the list of signal penalties started
+% immediately before is increased here (first for ~\linelabel~,
+% second for postponed ~\vadjust~ items):
+
+\mathchardef\@Mllbcodepen=11111
+\mathchardef\@Mppvacodepen=11112
+
+% (/New v4.00) (New v4.2) David Kastrup urges to use a private
+% name instead of ~\the\output~ (LaTeX-L-list). Otherwise an
+% ~\output~ routine loaded later and using ~\newtoks\output~
+% again may get lost entirely. So we change use of ~\@LN@output~,
+% using it for the former purpose. Reference to what appeared
+% with the name of ~\output~ here lasts for a few lines and then
+% is given away.
+
+\let\@tempa\output
+\newtoks\output
+\let\@LN@output\output
+\output=\expandafter{\the\@tempa}
+
+% Now we add two cases to Stephan's output routine. (New v4.00)
+
+\@tempa={%
+% (/New 4.2)
+ \LineNoTest
+ \if@tempswa
+%%
+%% (UL) Learnt that even in def.s blank line means ~\par~.
+%% to leave visual space in present file with having a
+%% blank line neither in present nor in .tex file,
+%% use double comment mark (`%%'). (/UL)
+%%
+% (New v4.00)
+% We insert recognition of waiting ~\linelabel~ items---
+%%
+ \ifnum\outputpenalty=-\@Mllbcodepen
+ \WriteLineNo
+%%
+% ---and of waiting ~\vadjust~ items:
+%%
+ \else
+ \ifnum\outputpenalty=-\@Mppvacodepen
+ \PassVadjustList
+ \else
+%%
+%% Now we give control back to Stephan.
+% (/New v4.00) (New v4.2) Outsource ``Standard'' output
+% ---which occurs so rarely---to subsection_\ref{ss:LLO}:
+%%
+ \LineNoLaTeXOutput
+% (/New v4.2) (New v4.00)
+% Two new ~\fi~s for the ~\linelabel~ and ~\vadjust~ tests---
+%%
+ \fi
+ \fi
+%%
+% ---and the remaining is
+%%%next three lines are
+% Stephan's code again:
+% (/New v4.00)
+%%
+ \else
+ \MakeLineNo
+ \fi
+ }
+
+% (New v4.00) Our new macros
+% ~\WriteLineNo~ and ~\PassVadjustList~ will be dealt with in
+% sections_\ref{s:LNref} and_\ref{ss:PVadj}. (/New v4.00)
+%
+% \subsection{%
+% \scs{LineNoTest}
+% \unskip}
+%
+% The float mechanism inserts ~\interlinepenalty~s during
+% ~\output~. So carefully reset it before going on. Else
+% we get doubled line numbers on every float placed in
+% horizontal mode, e.g, from ~\linelabel~.
+%
+% Sorry, neither a ~\linelabel~ nor a ~\marginpar~ should
+% insert a penalty, else the following linenumber
+% could go to the next page. Nor should any other
+% float. So let us suppress the ~\interlinepenalty~
+% altogether with the ~\@nobreak~ switch.
+%
+% Since (ltspace.dtx, v1.2p)[1996/07/26], the ~\@nobreaktrue~ does
+% it's job globally. We need to do it locally here.
+
+\def\LineNoTest{%
+ \let\@@par\@@@par
+ \ifnum\interlinepenalty<-\linenopenaltypar
+ \advance\interlinepenalty-\linenopenalty
+ \my@nobreaktrue
+ \fi
+ \@tempswatrue
+ \ifnum\outputpenalty>-\linenopenaltypar\else
+ \ifnum\outputpenalty>-188000\relax
+ \@tempswafalse
+ \fi
+ \fi
+ }
+
+\def\my@nobreaktrue{\let\if@nobreak\iftrue}
+
+% (UL) I would prefer ~\@LN@nobreaktrue~.---I thought here were
+% another case of the save stack problem explained in \TeX book,
+% p._301, namely through both local and global changing
+% ~\if@nobreak~. However, ~\my@nobreak~ is called during
+% ~\@LN@output~ only, while ~\@nobreaktrue~ is called by \LaTeX's
+% ~\@startsection~ only. The latter never happens during
+% ~\@LN@output~. So there is no local value of ~\if@nobreak~ on
+% save stack when ~\@nobreaktrue~ acts, since ~\the\@LN@output~
+% (where ~\@LN@output~ is a new name for the original ~\output~)
+% is executed within a group (\TeX book p._21).
+%%
+%% 2004/09/19 Removed nonsense here according to Stephan 2004/09/04.
+%%
+% (/UL)
+%
+% \subsection{%
+% Other output routines (v4.2)
+% \unskip}\label{ss:LLO}
+%
+% I had thought of dealing with bad interference of footnotes
+% (and ~\enlargethispage~) with (real) ~\marginpar~s and floats
+% \emph{here}. Yet this is done in
+% \[
+% ~http://~\mbox{[CTAN]}
+% ~/macros/latex/contrib/tamefloats/tameflts.sty~
+% \]
+% now, and I prefer striving for compatibility with the latter.
+% (See there for expanding on the problem.)
+% This requires returning the special absolute value of
+% ~\holdinginserts~ that ~lineno.sty~ finds at the end of a newly
+% typeset paragraph---now done in subsection_\ref{ss:CtrlLN}
+% (~\linenumberpar~).
+% The former ~\LineNoHoldInsertsTest~ has been filled into here.
+%% ---`3' is replaced by ~\thr@@~ for a while. ~\thr@@~ is
+%% useful practice since plain \TeX, but Stephan may have been
+%% wise in suspecting that \LaTeX\ once could forsake ~\thr@@~.
+%% The same holds for ~\@M=10000~.
+% Note: when the following code is invoked, we have
+% ~\if@tempswa~_ =_~\iftrue~.
+% WARNING: I am still not sure whether the present code is good
+% for cooperating with other packages that use ~\holdinginserts~.
+
+\def\LineNoLaTeXOutput{%
+ \ifnum \holdinginserts=\thr@@ \@tempswafalse \fi
+%% <- Previous ~\LineNoHoldInsertsTest~.
+ \if@tempswa
+ \if@twocolumn \let\@makecol\@LN@makecol \fi
+ \the\@LN@output % finally following David Kastrup's advice.
+ \ifnum \holdinginserts=-\thr@@
+ \global\holdinginserts\thr@@ \fi
+ \else
+ \global\holdinginserts-\thr@@
+ \unvbox\@cclv
+ \ifnum \outputpenalty=\@M \else \penalty\outputpenalty \fi
+ \fi
+}
+
+% \textit{More on dealing with output routines from other
+% packages:}
+% Since ~lineno.sty~'s output routine is called at least once
+% for each output line, I think it should be in \TeX's
+% original ~\output~, while output routines dealing with
+% building pages and with floats etc.\ should be filled into
+% registers addressed by ~\output~ after ~\newtoks\output~.
+% Therefore \begin{enumerate}
+% \item
+% ~tameflts.sty~ should be loaded \emph{after} ~lineno.sty~;
+% \item
+% if a class changes ~\output~ (APS journal class revtex4,
+% e.g.), ~lineno.sty~ should be loaded by ~\RequirePackage~
+% [here presumably following some options in
+% brackets]~{lineno}~ \emph{preceding} ~\documentclass~.
+% \item
+% If you actually maintain such a class, please consider
+% loading ~lineno.sty~ on some draft option. The bunch of
+% lineno's package options may be a problem, but perhaps the
+% purpose of your class is offering only very few of lineno's
+% options anyway, maybe just one.
+% \end{enumerate}
+% The latter may also be needed with classes that don't follow
+% David Kastrup's rule on changing ~\output~.
+%
+% \subsection{%
+% \scs{MakeLineNo}: Actually attach line number
+% \unskip}\label{ss:MLN}
+%
+% We have to return all the page to the current page, and
+% add a box with the line number, without adding
+% breakpoints, glue or space. The depth of our line number
+% should be equal to the previous depth of the page, in
+% case the page breaks here, and the box has to be moved up
+% by that depth.
+%
+% The ~\interlinepenalty~ comes after the ~\vadjust~ from a
+% ~\linelabel~, so we increment the line number \emph{after}
+% printing it. The macro ~\makeLineNumber~ produces the
+% text of the line number, see section \ref{appearance}.
+%
+% (UL) I needed a while to understand
+% the sentence on incrementing. Correctly: writing the
+% ~\newlabel~ to the .aux file is triggered by the signal
+% penalty that ~\end@float~ inserts via ~\vadjust~.
+% However, this could be changed by our new ~\PostponeVadjust~.
+% After ~\c@linenumber~ has been introduced as a \LaTeX\
+% counter, it might be preferable that it behaved like standard
+% \LaTeX\ counters which are incremented shortly before printing.
+% But this may be of little practical relevance in this case,
+% as ~\c@linenumber~ is driven in a very non-standard
+% way.---However still, this behaviour of ~\c@linenumber~
+% generates a problem with our ~edtable.sty~.
+%% \unskip---Before,
+%% I thought that Stephan had reported his reasoning incorrectly
+%% and rather did this because of his ~\resetlinenumber~ which
+%% initializes ~\c@linenumber~ to 1 instead of 0---the latter is
+%% usual with \LaTeX\ counters. Cf._additional comment at
+%% ~\resetlinenumber~.
+% (/UL).
+%
+% Finally we put in the natural ~\interlinepenalty~, except
+% after the last line.
+%
+% (New v3.10) Frank Mittelbach points out that box255 may be
+% less deep than the last box inside, so he proposes to
+% measure the page depth with ~\boxmaxdepth=\maxdimen~.
+% (/New v3.10)
+%
+% (UL, New v4.00) We also resume the matter of
+% ~\vadjust~ items that was started in section_\ref{ss:output}.
+%
+% \TeX\ puts only nonzero interline
+% penalties into the vertical list (\TeX book p._105), while
+% ~lineno.sty~ formerly replaced the signal interline penalty by
+% something closing with an explicit penalty of the value that
+% the interline penalty would have without ~lineno.sty~.
+% This is usually 0. Now, explicit vertical penalties can be
+% very nasty with respect to ~\nopagebreak~, e.g., a low (even
+% positive) ~\widowpenalty~ may force a widow where you
+% explicitly tried to forbid it by ~\nopagebreak~
+% (see explanation soon below).
+% The ~\nopagebreak~ we create here would never work if all
+% those zero penalties were present.---On
+% the other hand, we cannot just omit Stephan's zero penalties,
+% because \TeX\ puts a penalty of 10000 after what ~lineno.sty~
+% inserts (\TeX book p._125). This penalty must be overridden
+% to allow page breaks between ordinary lines. To revive
+% ~\nopagebreak~, we therefore replace those zero (or low)
+% penalties by penalties that the user demanded by
+% ~\nopagebreak~.---This mechanism is not perfect and does not
+% exactly restore the original \LaTeX\ working of ~\pagebreak~
+% and ~\nopagebreak~. Viz., if there are several vertical
+% penalties after a line which were produced by closely sitting
+% ~\[no]pagebreak~s, without ~lineno.sty~ the lowest penalty would
+% be effective (cf._\TeX book exercise_14.10). Our mechanism, by
+% contrast, chooses the \emph{last} user-set penalty of the line
+% as the effective one. It would not be very difficult to come
+% more close to the original mechanism, but until someone urges
+% us we will cling to the present simple way. You may consider an
+% advantage of the difference between our mechanism and the
+% original one that the user here can actually override low
+% penalties by ~\nopagebreak~, which may be what a lay \LaTeX\
+% user would expect.---Zero glue would do instead of zero
+% penalty! This could make things easier. Maybe next time. %% TODO v4.3+
+% (/UL, /New v4.00)
+
+\def\MakeLineNo{%
+ \@LN@maybe@normalLineNumber % v4.31
+ \boxmaxdepth\maxdimen\setbox\z@\vbox{\unvbox\@cclv}%
+ \@tempdima\dp\z@ \unvbox\z@
+ \sbox\@tempboxa{\hb@xt@\z@{\makeLineNumber}}%
+%%
+% (New v4.00) Previously,
+% \begin{old}\begin{verbatim}
+% % \stepcounter{linenumber}%
+% \end{verbatim}
+% \end{old}
+%% %% TODO: Still first `\begin{old}'?
+% followed. (Of course, there was no
+% comment mark; I put it there to make
+% reading the actual code easy.)
+%
+% (New v4.22: improved) Why not just
+% \[~\global\advance\c@linenumber\@ne~?\]
+% ~\stepcounter~ additionally resets ``subordinate''
+% counters, but which could these (usefully) be?
+% Again, may be column counters with ~edtable.sty~!?
+%
+% But then, our ~edtable.sty~ and its ~longtable~ option
+% should use it as well. So use a shorthand supporting
+% uniformity. You can even use it as a hook for choosing
+% ~\global\advance\c@linenumber\@ne~ instead of our choice.
+% (/New v4.22)
+%%
+ \stepLineNumber
+%%
+% (/New v4.00)
+%%
+ \dp\@tempboxa=\@tempdima\ht\@tempboxa=\z@
+ \nointerlineskip\kern-\@tempdima\box\@tempboxa
+%%
+% (New v4.00)
+% The line number has now been placed (it may be invisible
+% depending on the modulo feature), so we can insert the
+% ~\vadjust~ items. We cannot do this much later, because
+% their right place is above the artificial interline
+% penalty which Stephan's code will soon insert
+% (cf._\TeX book p._105). The next command is just ~\relax~
+% if no ~\vadjust~ items have been accumulated for the
+% current line. Otherwise it is a list macro inserting
+% the ~\vadjust~ items and finally resetting itself.
+% (This is made in section_\ref{ss:PVadj} below.)
+% If the final item is a penalty, it is stored so it can
+% compete with other things about page breaking.
+%%
+ \@LN@do@vadjusts
+ \count@\lastpenalty
+%%
+% At this place,
+% \begin{old}\begin{verbatim}
+% % \ifnum\outputpenalty=-\linenopenaltypar\else
+% \end{verbatim}
+% \end{old}
+% originally followed. We need something \emph{before} the
+% ~\else~:
+%%
+ \ifnum\outputpenalty=-\linenopenaltypar
+ \ifnum\count@=\z@ \else
+%%
+% So final ~\pagebreak[0]~ or ~\nopagebreak[0]~ has no
+% effect---but this will make a difference after headings only,
+% where nobody should place such a thing anyway.
+%%
+ \xdef\@LN@parpgbrk{\penalty\the\count@
+ \gdef\noexpand\@LN@parpgbrk{\kern\z@}}%
+%% %% TODO v4.3+: Stephan's advice
+%% -- but this happens rarely.
+% That penalty will replace former ~\kern\z@~ in
+% ~\linenumberpar~, see subsection_\ref{ss:CtrlLN}.---A
+% few days earlier, I tried to send just a penalty value.
+% However, the ~\kern\z@~ in ~\linenumberpar~ is crucial,
+% as I then found out. See below.---The final penalty is
+% repeated, but this does no harm. (It would not be very
+% difficult to avoid the repeating, but it may even be
+% less efficient.) It may be repeated due to the previous
+% ~\xdef~, but it may be repeated as well below in the
+% present macro where artificial interline penalty is to
+% be overridden.
+%%
+ \fi
+ \else
+%%
+% (/New v4.00)
+%% Corrected code alignment with v4.11.
+ \@tempcnta\outputpenalty
+ \advance\@tempcnta -\linenopenalty
+%%
+% (New v4.00)
+% \begin{old}\begin{verbatim}
+% % \penalty\@tempcnta
+% \end{verbatim}
+% \end{old}
+% followed previously. To give ~\nopagebreak~ a chance,
+% we do
+%% Corrected code alignment with v4.11.
+ \penalty \ifnum\count@<\@tempcnta \@tempcnta \else \count@ \fi
+%%
+% instead.---In ~linenox0.sty~, the ~\else~ thing once was omitted.
+% Sergei Mariev's complaint (thanks!) showed that it is vital
+% (see comment before ~\MakeLineNo~).
+% The remaining ~\fi~ from previous package version closes the
+% ~\ifnum\outputpenalty~\dots
+% (/New v4.00)
+%%
+ \fi
+ }
+
+% (New v4.00)
+
+\newcommand\stepLineNumber{\stepcounter{linenumber}}
+
+% For reason, see use above. (/New v4.00)
+%% %% TODO v4.3+: ~\newcommand~ more often!?
+%
+% \section{%
+% Control line numbering
+% \unskip}
+% \subsection{%
+% Basic code %% own subsec. v4.2.
+% \unskip}\label{ss:CtrlLN}
+% The line numbering is controlled via ~\par~. \LaTeX\
+% saved the \TeX-primitive ~\par~ in ~\@@par~. We push it
+% one level further out, and redefine ~\@@par~ to insert
+% the ~\interlinepenalty~ needed to trigger the
+% line numbering. And we need to allow pagebreaks after a
+% paragraph.
+%
+% New (2.05beta): the prevgraf test. A paragraph that ends with a
+% displayed equation, a ~\noindent\par~ or ~wrapfig.sty~ produce empty
+% paragraphs. These should not get a spurious line number via
+% ~\linenopenaltypar~.
+
+\let\@@@par\@@par
+\newcount\linenoprevgraf
+
+% (UL) And needs ~\linenoprevgraf~
+% to be a counter? Perhaps there may be a paragraph having
+% thousands of lines, so ~\mathchardef~ doesn't suffice (really??).
+%%
+%% %% TODO: limitations of lines per paragraph elsewhere?
+%% %% Signal penalties, e.g.!? ~\deadcycles~!?
+%%
+% A macro ending on ~\relax~ might suffice, but would be
+% somewhat slow. I think I will use ~\mathchardef~ next time.
+% Or has any user used ~\linenoprevgraf~? (/UL)
+
+\def\linenumberpar{\ifvmode\@@@par\else\ifinner\@@@par\else
+ \xdef\@LN@outer@holdins{\the\holdinginserts}% v4.2
+ \advance\interlinepenalty \linenopenalty
+ \linenoprevgraf\prevgraf
+ \global\holdinginserts\thr@@
+ \@@@par
+%%
+% (New v4.32)
+% A ~\belowdisplayskip~ may be here when the paragraph ends on a
+% display-math; or there may be a ~\topsep~ from a list, etc.
+% ~\addvspace~ couldn't take account for it unless we move that
+% skip down:
+%%
+ \skip@\lastskip
+ \if@nobreak \nobreak \fi \vskip-\skip@
+%%
+% (/New v4.32)
+%%
+ \ifnum\prevgraf>\linenoprevgraf
+ \penalty-\linenopenaltypar
+ \fi
+%%
+% (New v4.00)
+% \begin{old}\begin{verbatim}
+% % \kern\z@
+% \end{verbatim}
+% \end{old}
+% was here previously. What for?
+% According to \TeX book p._125, Stephan's
+% interline penalty is changed into 10000. At the end of a
+% paragraph, the ~\parskip~ would follow that penalty of 10000,
+% so there could be a page break neither at the
+% ~\parskip~ nor at the ~\baselineskip~ (\TeX book p. 110)---so
+% there could never be a page break between two paragraphs.
+% So something must screen off the 10000 penalty.
+% Indeed, the ~\kern~ is a place to break.
+% (Stephan once knew this: see `allow pagebreaks' above.)
+%
+% Formerly, I tried to replace ~\kern\z@~ by
+% \begin{old}\begin{verbatim}
+% % \penalty\@LN@parpgpen\relax
+% \end{verbatim}
+% \end{old}
+% ---but this allows a page break after heading. So:
+%%
+ \@LN@parpgbrk
+ \if@nobreak \nobreak \fi \vskip\skip@ % v4.32
+%%
+% After heading, ~\kern\z@~ resulting from previous line
+% (see below) is followed by ~\write~ or ~\penalty10000~,
+% so causes no page break.
+%
+% These and similar changes were formerly done by ~linenox1.sty~.
+% (/New v4.00)
+%%
+ \global\holdinginserts\@LN@outer@holdins % v4.2
+ \advance\interlinepenalty -\linenopenalty
+ \fi\fi}
+
+% (New v4.00) Initialize ~\@LN@parpgbrk~:
+
+\gdef\@LN@parpgbrk{\kern\z@}
+
+% (/New v4.00)
+%
+% The basic commands to enable and disable line numbers.
+% ~\@par~ and ~\par~ are only touched, when they are ~\let~
+% to ~\@@@par~/~\linenumberpar~. The line number may be
+% reset to 1 with the star-form, or set by an optional
+% argument ~[~<number>~]~.
+%
+% (New v4.00) We add ~\ifLineNumbers~ etc.\ since
+% a number of our new adjustments need to know whether
+% linenumbering is active. This just provides a kind of
+% shorthand for ~\ifx\@@par\linenumberpar~; moreover it is
+% more stable: who knows what may happen to ~\@@par~?---A
+% caveat: ~\ifLineNumbers~ may be wrong. E.g., it may be
+% ~\iffalse~ where it acts, while a ~\linenumbers~ a few
+% lines below---in the same paragraph---brings about that
+% the line where the ~\ifLineNumbers~ appears gets a
+% marginal number.
+%% Better implementation suggested below.
+%%
+% (New v4.3) Just noticed: Such tricks have been
+% disallowed with v4.11, see subsections_\ref{ss:LL}
+% and_\ref{ss:CtrlLN}.---Moreover, the switching between
+% meanings of ~\linelabel~ for a possible error message
+% as of v4.11 is removed. Speed is difficult to esteem
+% and also depends on applications. Just use the most
+% simple code you find. (/New v4.3)
+
+\newif\ifLineNumbers \LineNumbersfalse
+
+% (/New v4.00)
+
+\def\linenumbers{%
+ \LineNumberstrue % v4.00
+ \xdef\@LN@outer@holdins{\the\holdinginserts}% v4.3
+%%
+% (New v4.3) The previous line is for ~{linenomath}~
+% in a first numbered paragraph. (/New v4.3)
+%%
+ \let\@@par\linenumberpar
+ % \let\linelabel\@LN@linelabel % v4.11, removed v4.3
+ \ifx\@par\@@@par\let\@par\linenumberpar\fi
+ \ifx\par\@@@par\let\par\linenumberpar\fi
+ \@LN@maybe@moduloresume % v4.31
+ \@ifnextchar[{\resetlinenumber}%]
+ {\@ifstar{\resetlinenumber}{}}%
+ }
+
+\def\nolinenumbers{%
+ \LineNumbersfalse % v4.00
+ \let\@@par\@@@par
+ % \let\linelabel\@LN@LLerror % v4.11, removed v4.3
+ \ifx\@par\linenumberpar\let\@par\@@@par\fi
+ \ifx\par\linenumberpar\let\par\@@@par\fi
+ }
+
+% (New v4.00) Moreover, it is useful to switch to
+% ~\nolinenumbers~ in ~\@arrayparboxrestore~. We postpone this
+% to section_\ref{ss:ReDef} where we'll have an appending macro
+% for doing this. (/New v4.00)
+%
+% What happens with a display math? Since ~\par~ is not executed,
+% when breaking the lines before a display, they will not get
+% line numbers. Sorry, but I do not dare to change
+% ~\interlinepenalty~ globally, nor do I want to redefine
+% the display math environments here.
+% \begin{displaymath}
+% display \ math
+% \end{displaymath}
+% See the subsection below, for a wrapper environment to make
+% it work. But that requires to wrap each and every display
+% in your \LaTeX\ source %%.
+%% v4.3:
+% (see option ~displaymath~ in subsections_\ref{ss:v3opts}
+% and_\ref{ss:display} for some relief [UL]).
+%
+% The next two commands are provided to turn on line
+% numbering in a specific mode. Please note the difference:
+% for pagewise numbering, ~\linenumbers~ comes first to
+% inhibit it from seeing optional arguments, since
+% re-/presetting the counter is useless.
+
+\def\pagewiselinenumbers{\linenumbers\setpagewiselinenumbers}
+\def\runninglinenumbers{\setrunninglinenumbers\linenumbers}
+
+% Finally, it is a \LaTeX\ style, so we provide for the use
+% of environments, including the suppression of the
+% following paragraph's indentation.
+%
+%% TODO: v4.3+:
+% (UL) I am drawing the following
+% private thoughts of Stephan's to publicity so that others may
+% think about them---or to remind myself of them in an efficient
+% way. (/UL)
+%% UL changed `%%%' to `% %' below.
+%% TODO: add \par to \linenumbers, if called from an environment. %% v4.3
+%% ToDO: add an \@endpe hack if \linenumbers are turned on
+% \begin{old}\begin{verbatim}
+% % TO DO: add \par to \linenumbers, if called from an environment.
+% % To DO: add an \@endpe hack if \linenumbers are turned on
+% % in horizontal mode. {\par\parskip\z@\noindent} or
+% % something.
+% \end{verbatim}
+% \end{old}
+% (UL) However, I rather think that ~\linenumbers~ and %% v4.31
+% ~\nolinenumbers~ should execute a ~\par~ already. (Then the
+% ~\par~s in the following definitions should be removed.) (/UL)
+
+\@namedef{linenumbers*}{\par\linenumbers*}
+\@namedef{runninglinenumbers*}{\par\runninglinenumbers*}
+
+\def\endlinenumbers{\par\@endpetrue}
+\let\endrunninglinenumbers\endlinenumbers
+\let\endpagewiselinenumbers\endlinenumbers
+\expandafter\let\csname endlinenumbers*\endcsname\endlinenumbers
+\expandafter\let\csname endrunninglinenumbers*\endcsname\endlinenumbers
+\let\endnolinenumbers\endlinenumbers
+
+%
+% \subsection{%
+% Display math
+% \unskip}\label{ss:DM}
+%
+% Now we tackle the problem to get display math working.
+% There are different options.
+% \begin{enumerate}\item[
+% 1.] Precede every display math with a ~\par~.
+% Not too good.
+% \item[
+% 2.] Change ~\interlinepenalty~ and associates globally.
+% Unstable.
+% \item[
+% 3.] Wrap each display math with a ~{linenomath}~
+% environment.
+% \end{enumerate}
+% We'll go for option 3. See if it works:
+% \begin{linenomath}
+% \begin{equation}
+% display \ math
+% \end{equation}
+% \end{linenomath}
+% The star form ~{linenomath*}~ should also number the lines
+% of the display itself,
+% \begin{linenomath*}
+% \begin{eqnarray}
+% multi && line \\
+% display && math \\
+% &
+% \begin{array}{c}
+% with \\
+% array
+% \end{array}
+% &
+% \end{eqnarray}
+% \end{linenomath*}
+% including multline displays.
+%
+% First, here are two macros to turn
+% on linenumbering on paragraphs preceeding displays, with
+% numbering the lines of the display itself, or without.
+% The ~\ifx..~ tests if line numbering is turned on. It
+% does not harm to add these wrappers in sections that are
+% not numbered. Nor does it harm to wrap a display
+% twice, e.q, in case you have some ~{equation}~s wrapped
+% explicitely, and later you redefine ~\equation~ to do it
+% automatically.
+%
+% (New v4.3) To avoid the spurious line number above a
+% display in vmode, I insert ~\ifhmode~. (/New v4.3)
+
+\newcommand\linenomathNonumbers{%
+ \ifLineNumbers
+%% \ifx\@@par\@@@par\else
+ \ifnum\interlinepenalty>-\linenopenaltypar
+ \global\holdinginserts\thr@@
+ \advance\interlinepenalty \linenopenalty
+ \ifhmode % v4.3
+ \advance\predisplaypenalty \linenopenalty
+ \fi
+ \fi
+ \fi
+ \ignorespaces
+ }
+
+\newcommand\linenomathWithnumbers{%
+ \ifLineNumbers
+%% \ifx\@@par\@@@par\else
+ \ifnum\interlinepenalty>-\linenopenaltypar
+ \global\holdinginserts\thr@@
+ \advance\interlinepenalty \linenopenalty
+ \ifhmode % v4.3
+ \advance\predisplaypenalty \linenopenalty
+ \fi
+ \advance\postdisplaypenalty \linenopenalty
+ \advance\interdisplaylinepenalty \linenopenalty
+ \fi
+ \fi
+ \ignorespaces
+ }
+
+% The ~{linenomath}~ environment has two forms, with and
+% without a star. The following two macros define the
+% environment, where the stared/non-stared form does/doesn't number the
+% lines of the display or vice versa.
+
+\newcommand\linenumberdisplaymath{%
+ \def\linenomath{\linenomathWithnumbers}%
+ \@namedef{linenomath*}{\linenomathNonumbers}%
+ }
+
+\newcommand\nolinenumberdisplaymath{%
+ \def\linenomath{\linenomathNonumbers}%
+ \@namedef{linenomath*}{\linenomathWithnumbers}%
+ }
+
+\def\endlinenomath{%
+ \ifLineNumbers % v4.3
+ \global\holdinginserts\@LN@outer@holdins % v4.21
+ \fi
+ \global % v4.21 support for LaTeX2e earlier than 1996/07/26.
+ \@ignoretrue
+}
+\expandafter\let\csname endlinenomath*\endcsname\endlinenomath
+
+% The default is not to number the lines of a display. But
+% the package option ~mathlines~ may be used to switch
+% that behavior.
+
+\nolinenumberdisplaymath
+
+%
+% \section{%
+% Line number references
+% \unskip}\label{s:LNref}
+% \subsection{%
+% Internals %% New subsec. v4.3.
+% \unskip}
+% The only way to get a label to a line number in a
+% paragraph is to ask the output routine to mark it.
+%
+% (New v4.00) The following two paragraphs don't hold any
+% longer, see below. (/New v4.00)
+% \begin{old}\begin{verbatim}
+% % We use the marginpar mechanism to hook to ~\output~ for a
+% % second time. Marginpars are floats with number $-1$, we
+% % fake marginpars with No $-2$. Originally, every negative
+% % numbered float was considered to be a marginpar.
+% %
+% % The float box number ~\@currbox~ is used to transfer the
+% % label name in a macro called ~\@LNL@~<box-number>.
+% \end{verbatim}
+% \end{old}
+% A ~\newlabel~ is written to the aux-file. The reference
+% is to ~\theLineNumber~, \emph{not} ~\thelinenumber~.
+% This allows to hook in, as done below for pagewise line
+% numbering.
+%
+% (New v3.03) The ~\@LN@ExtraLabelItems~ are added for a hook
+% to keep packages like ~{hyperref}~ happy. (/New v3.03)
+%
+% (New v4.00)
+% We fire the ~\marginpar~ mechanism, so we leave \LaTeX's
+% ~\@addmarginpar~ untouched.
+% \begin{old}\begin{verbatim}
+% % \let\@LN@addmarginpar\@addmarginpar
+% % \def\@addmarginpar{%
+% % \ifnum\count\@currbox>-2\relax
+% % \expandafter\@LN@addmarginpar
+% % \else
+% % \@cons\@freelist\@currbox
+% % \protected@write\@auxout{}{%
+% % \string\newlabel
+% % {\csname @LNL@\the\@currbox\endcsname}%
+% % {{\theLineNumber}{\thepage}\@LN@ExtraLabelItems}}%
+% % \fi}
+% \end{verbatim}
+% \end{old}
+% OK, we keep Stephan's ~\@LN@ExtraLabelItems~:
+% (/New v4.00)
+
+\let\@LN@ExtraLabelItems\@empty
+
+% (New v4.00)
+% We imitate the ~\marginpar~ mechanism without using the
+% ~\@freelist~ boxes. ~\linelabel~ will indeed place a signal
+% penalty (~\@Mllbcodepen~, new), and it will put a label into
+% some list macro ~\@LN@labellist~. A new part of the output
+% routine will take the labels from the list and will write
+% ~\newlabel~s to the .aux file.
+%
+% The following is a version of \LaTeX's ~\@xnext~.
+
+\def\@LN@xnext#1\@lt#2\@@#3#4{\def#3{#1}\gdef#4{#2}}
+
+% This takes an item ~#1~ from a list ~#4~ into ~#3~;
+% to be used as ~\expandafter\@LN@xnext#4\@@#3#4~.
+% Our lists use ~\@lt~ after each item for separating.
+% Indeed, there will be another list macro which can
+% appear as argument ~#4~, this will be used for moving
+% ~\vadjust~ items (section_\ref{ss:PVadj}).
+% The list for ~\linelabel~s is the following:
+
+\global\let\@LN@labellist\@empty
+
+% The next is the new part of the output routine writing the
+% ~\newlabel~ to the .aux file. Since it is no real page output,
+% the page is put back to top of the main vertical list.
+
+\def\WriteLineNo{%
+ \unvbox\@cclv
+ \expandafter \@LN@xnext \@LN@labellist \@@
+ \@LN@label \@LN@labellist
+ \protected@write\@auxout{}{\string\newlabel{\@LN@label}%
+ {{\theLineNumber}{\thepage}\@LN@ExtraLabelItems}}%
+}
+
+% (/New v4.00)
+%
+% \subsection{%
+% The \scs{linelabel} command
+% \unskip}\label{ss:LL}
+% To refer to a place in line ~\ref{~<foo>~}~ at page
+% ~\pageref{~<foo>~}~ you place a ~\linelabel{~<foo>~}~ at
+% that place.
+%
+% \linelabel{demo}
+% \marginpar{\tiny\raggedright
+% See if it works: This paragraph
+% starts on page \pageref{demo}, line
+% \ref{demo}.
+% \unskip}%
+% (New v4.11)
+% \begin{old}\begin{verbatim}
+% % If you use this command outside a ~\linenumbers~
+% % paragraph, you will get references to some bogus
+% % line numbers, sorry. But we don't disable the command,
+% % because only the ~\par~ at the end of a paragraph may
+% % decide whether to print line numbers on this paragraph
+% % or not. A ~\linelabel~ may legally appear earlier than
+% % ~\linenumbers~.
+% \end{verbatim}
+% \end{old}
+% This trick is better not allowed---see subsections_\ref{ss:LL}
+% and_\ref{ss:CtrlLN}.
+% (/New v4.11)
+%
+% ~\linelabel~
+% \begin{old}\begin{verbatim}
+% %, via a fake float number $-2$, %% new mechanism v4.00
+% \end{verbatim}
+% \end{old}
+% puts a
+% ~\penalty~ into a ~\vadjust~, which triggers the
+% pagebuilder after putting the current line to the main
+% vertical list. A ~\write~ is placed on the main vertical
+% list, which prints a reference to the current value of
+% ~\thelinenumber~ and ~\thepage~ at the time of the
+% ~\shipout~.
+%
+% A ~\linelabel~ is allowed only in outer horizontal mode.
+% In outer vertical mode we start a paragraph, and ignore
+% trailing spaces (by fooling ~\@esphack~).
+%
+% (New v4.00) We aim at relaxing the previous condition.
+% We insert a hook ~\@LN@mathhook~ and a shorthand
+% ~\@LN@postlabel~ to support the ~mathrefs~ option which
+% allows ~\linelabel~ in math mode.
+%
+% The next paragraph is no longer valid.
+% \begin{old}\begin{verbatim}
+% % The argument of ~\linelabel~ is put into a macro with a
+% % name derived from the number of the allocated float box.
+% % Much of the rest is dummy float setup.
+% \end{verbatim}
+% \end{old}
+% (/New v4.00)
+%
+% (New v4.11)
+% \begin{old}\begin{verbatim}
+% % \def\linelabel#1{%
+% \end{verbatim}
+% \end{old}
+% I forgot ~\linenumbers~ today, costed me hours or so.
+
+\def\@LN@LLerror{\PackageError{lineno}{%
+ \string\linelabel\space without \string\linenumbers}{%
+ Just see documentation. (New feature v4.11)}\@gobble}
+
+% (New v4.3) Here some things have changed for v4.3.
+% The previous ~#1~ has been replaced by ~\@gobble~.
+% Ensuing, the ~\linelabel~ error message is re-implemented.
+% I find it difficult to compare efficiency of slight
+% alternatives---so choose an easy one. Explicit switching
+% in ~\linenumbers~ and ~\nolinenumbers~ is an additional
+% command that may better be avoided.
+
+\newcommand\linelabel{%
+ \ifLineNumbers \expandafter \@LN@linelabel
+ \else \expandafter \@LN@LLerror \fi}
+%%\let\linelabel\@LN@LLerror
+
+\gdef\@LN@linelabel#1{%
+%%
+% ~\gdef~ for hyperref ``symbolically''. (/New v4.11)
+%%
+ \ifx\protect\@typeset@protect
+%%
+% $\gets$ And a ~\linelabel~ should never be replicated in a
+% mark or a TOC entry. (/New v4.3)
+%%
+ \ifvmode
+ \ifinner \else
+ \leavevmode \@bsphack \@savsk\p@
+ \fi
+ \else
+ \@bsphack
+ \fi
+ \ifhmode
+ \ifinner
+ \@parmoderr
+ \else
+%%
+% (New v4.00)
+%%
+ \@LN@postlabel{#1}%
+% \begin{old}\begin{verbatim}
+% % \@floatpenalty -\@Mii
+% % \@next\@currbox\@freelist
+% % {\global\count\@currbox-2%
+% % \expandafter\gdef\csname @LNL@\the\@currbox\endcsname{#1}}%
+% % {\@floatpenalty\z@ \@fltovf \def\@currbox{\@tempboxa}}%
+% % \begingroup
+% % \setbox\@currbox \color@vbox \vbox \bgroup \end@float
+% % \endgroup
+% % \@ignorefalse \@esphack
+% \end{verbatim}
+% \end{old}
+% (/New v4.00)
+%%
+ \@esphack
+%%
+% (New v4.00)
+% The ~\@ignorefalse~ was appropriate before because the
+% ~\@Esphack~ in ~\end@float~ set ~\@ignoretrue~. Cf._\LaTeX's
+% ~\@xympar~. (/New v4.00)
+%%
+ \fi
+ \else
+%%
+% (New v4.00)
+%%
+ \@LN@mathhook{#1}%
+% \begin{old}\begin{verbatim}
+% % \@parmoderr
+% \end{verbatim}
+% \end{old}
+% Instead of complaining, you may just do your job.
+% (/New v4.00)
+%%
+ \fi
+ \fi
+ }
+
+% (New v4.00) The shorthand just does what happened
+% with ~linenox0.sty~ before ~ednmath0.sty~ (New v4.1:
+% now ~mathrefs~ option) appeared, and
+% the hook is initialized to serve the same purpose.
+% So errors come just where Stephan had built them in,
+% and this is just the \LaTeX\ ~\marginpar~ behaviour.
+
+\def\@LN@postlabel#1{\g@addto@macro\@LN@labellist{#1\@lt}%
+ \vadjust{\penalty-\@Mllbcodepen}}
+\def\@LN@mathhook#1{\@parmoderr}
+
+% (/New v4.00)
+%
+% \modulolinenumbers[3]
+% \firstlinenumber{1}
+% \section{%
+% The appearance of the line numbers
+% \unskip}\label{appearance}
+% \subsection{%
+% Basic code %% own subsec. v4.2.
+% \unskip}
+%
+% The line numbers are set as ~\tiny\sffamily\arabic{linenumber}~,
+% $10pt$ left of the text. With options to place it
+% right of the text, or . . .
+%
+% . . . here are the hooks:
+
+\def\makeLineNumberLeft{%
+ \hss\linenumberfont\LineNumber\hskip\linenumbersep}
+
+\def\makeLineNumberRight{%
+ \linenumberfont\hskip\linenumbersep\hskip\columnwidth
+ \hb@xt@\linenumberwidth{\hss\LineNumber}\hss}
+
+\def\linenumberfont{\normalfont\tiny\sffamily}
+
+\newdimen\linenumbersep
+\newdimen\linenumberwidth
+
+\linenumberwidth=10pt
+\linenumbersep=10pt
+
+% Margin switching requires ~pagewise~ numbering mode, but
+% choosing the left or right margin for the numbers always
+% works.
+
+\def\switchlinenumbers{\@ifstar
+ {\let\makeLineNumberOdd\makeLineNumberRight
+ \let\makeLineNumberEven\makeLineNumberLeft}%
+ {\let\makeLineNumberOdd\makeLineNumberLeft
+ \let\makeLineNumberEven\makeLineNumberRight}%
+ }
+
+\def\setmakelinenumbers#1{\@ifstar
+ {\let\makeLineNumberRunning#1%
+ \let\makeLineNumberOdd#1%
+ \let\makeLineNumberEven#1}%
+ {\ifx\c@linenumber\c@runninglinenumber
+ \let\makeLineNumberRunning#1%
+ \else
+ \let\makeLineNumberOdd#1%
+ \let\makeLineNumberEven#1%
+ \fi}%
+ }
+
+\def\leftlinenumbers{\setmakelinenumbers\makeLineNumberLeft}
+\def\rightlinenumbers{\setmakelinenumbers\makeLineNumberRight}
+
+\leftlinenumbers*
+
+% ~\LineNumber~ is a hook which is used for the modulo stuff.
+% It is the command to use for the line number, when you
+% customize ~\makeLineNumber~. Use ~\thelinenumber~ to
+% change the outfit of the digits.
+%
+%
+% We will implement two modes of operation:
+% \begin{itemize}
+% \item numbers ~running~ through (parts of) the text
+% \item ~pagewise~ numbers starting over with one on top of
+% each page.
+% \end{itemize}
+% Both modes have their own count register, but only one is
+% allocated as a \LaTeX\ counter, with the attached
+% facilities serving both.
+
+\newcounter{linenumber}
+\newcount\c@pagewiselinenumber
+\let\c@runninglinenumber\c@linenumber
+
+% Only the running mode counter may be reset, or preset,
+% for individual paragraphs. The pagewise counter must
+% give a unique anonymous number for each line.
+%
+% (New v4.3) ~\newcounter{linenumber}~
+% was the only ~\newcounter~ in the whole package, and
+% formerly I was near using ~\newcount~ instead. Yet
+% ~\newcounter~ may be quite useful for ~\includeonly~.
+% It also supports resetting ``subcounters'', but what
+% could these be? Well, ~edtable~ might introduce a
+% subcounter for columns.
+% (Note that \LaTeX's setting commands would work with
+% ~\newcount\c@linenumber~ already, apart from this.
+% And perhaps sometimes ~\refstepcounter{linenumber}~
+% wouldn't work---cf._my discussion of ~\stepcounter~ in
+% subsection_\ref{ss:MLN}, similarly ~\refstep...~ would
+% be quite useless.
+% Even the usual redefinitions of ~\thelinenumber~ would
+% work. It is nice, on the other hand, that
+% ~\thelinenumber~ is predefined here. \LaTeX's
+% initialization of the value perhaps just serves making
+% clear \LaTeX\ counters should always be changed
+% globally.---Shortened and improved the discussion here.)
+% (/New v4.3)
+%
+% (New v4.22)
+% ~\c@linenumber~ usually is---globally---incremented by
+% ~\stepcounter~ (at present), so resetting it locally would
+% raise the save stack problem of \TeX book p._301, moreover
+% it would be is useless, there is no hope of keeping the
+% values local (but see subsection_\ref{ss:ILN}). So I insert
+% ~\global~: (/New v4.22)
+
+\newcommand*\resetlinenumber[1][\@ne]{%
+ \global % v4.22
+ \c@runninglinenumber#1\relax}
+
+% (New v4.00)
+% \begin{old}\begin{verbatim}
+% % \newcommand\resetlinenumber[1][1]{\c@runninglinenumber#1}
+% \end{verbatim}
+% \end{old}
+% Added ~\relax~, being quite sure that this does no harm
+% and is quite important, as with ~\setcounter~ etc.
+% I consider this a bug fix (although perhaps no user has
+% ever had a problem with this). (/New v4.00)
+%
+% (v4.22: I had made much fuss about resetting subordinate
+% counters here---removed, somewhat postponed.)
+%
+%% TODO v4.3+:
+%% \newcommand*\resetlinenumber[1][\@ne]{%
+%% \ifx\c@linenumber\c@runninglinenumber
+%% \global\c@linenumber#1\relax
+%% \global\advance\c@linenumber\m@ne
+%% \stepLineNumber
+%% \else
+%% \PackageError{lineno}%% Shorthand!?
+%% {You can't reset line number in pagewise mode}%
+%% {This should suffice.}%
+%% \fi
+%% }
+%
+% \subsection{%
+% Running line numbers
+% \unskip}
+%
+% Running mode is easy, ~\LineNumber~ and ~\theLineNumber~
+% produce ~\thelinenumber~, which defaults to
+% ~\arabic{linenumber}~, using the ~\c@runninglinenumber~
+% counter. This is the default mode of operation.
+
+\def\makeRunningLineNumber{\makeLineNumberRunning}
+
+\def\setrunninglinenumbers{%
+ \def\theLineNumber{\thelinenumber}%
+ \let\c@linenumber\c@runninglinenumber
+ \let\makeLineNumber\makeRunningLineNumber
+ }
+
+\setrunninglinenumbers\resetlinenumber
+
+%
+% \subsection{%
+% Pagewise line numbers
+% \unskip}\label{ss:PW}
+%
+% Difficult, if you think about it. The number has to be
+% printed when there is no means to know on which page it
+% will end up, except through the aux-file. My solution
+% is really expensive, but quite robust.
+%
+% With version ~v2.00~ the hashsize requirements are
+% reduced, because we do not need one controlsequence for
+% each line any more. But this costs some computation time
+% to find out on which page we are.
+%
+% ~\makeLineNumber~ gets a hook to log the line and page
+% number to the aux-file. Another hook tries to find out
+% what the page offset is, and subtracts it from the counter
+% ~\c@linenumber~. Additionally, the switch
+% ~\ifoddNumberedPage~ is set true for odd numbered pages,
+% false otherwise.
+
+\def\setpagewiselinenumbers{%
+ \let\theLineNumber\thePagewiseLineNumber
+ \let\c@linenumber\c@pagewiselinenumber
+ \let\makeLineNumber\makePagewiseLineNumber
+ }
+
+\def\makePagewiseLineNumber{\logtheLineNumber\getLineNumber
+ \ifoddNumberedPage
+ \makeLineNumberOdd
+ \else
+ \makeLineNumberEven
+ \fi
+ }
+
+% Each numbered line gives a line to the aux file
+% \begin{verse}
+% ~\@LN{~<line>~}{~<page>~}~
+% \end{verse}
+% very similar to the ~\newlabel~ business, except that we need
+% an arabic representation of the page number, not what
+% there might else be in ~\thepage~.
+
+\def\logtheLineNumber{\protected@write\@auxout{}{%
+%%
+% (New v4.00) (UL)
+% As Daniel Doherty observed, the earlier line
+% \begin{old}\begin{verbatim}
+% % \string\@LN{\the\c@linenumber}{\noexpand\the\c@page}}}
+% \end{verbatim}
+% \end{old}
+% here may lead into an infinite loop when the user resets
+% the page number (think of ~\pagenumbering~, e.g.).
+% Stephan and I brief\/ly discussed the matter and decided
+% to introduce a ``physical''-page counter to which
+% ~\logtheLineNumber~ refers. It was Stephan's idea to use
+% ~\cl@page~ for reliably augmenting the ``physical''-page
+% counter. However, this relies on the output routine once
+% doing ~\stepcounter{page}~. Before Stephan's
+% suggestion, I had thought of appending the stepping to
+% \LaTeX's ~\@outputpage~.---So the macro definition ends
+% as follows.
+%%
+ \string\@LN{\the\c@linenumber}{%
+%%
+% (New v4.2)
+%% \noexpand\number\n@LN@truepage}}}
+%%
+% The `truepage' counter must start with ~\c@~ so it works
+% with ~\include~, and the ~\@addtoreset~ below is needed
+% for the same purpose.
+%%
+ \noexpand\the\c@LN@truepage}}}
+
+%% \newcount\n@LN@truepage
+%% \g@addto@macro\cl@page{\global\advance\n@LN@truepage\@ne}
+\newcount\c@LN@truepage
+\g@addto@macro\cl@page{\global\advance\c@LN@truepage\@ne}
+\@addtoreset{LN@truepage}{@ckpt}
+
+% (/New v4.2) I had thought of offering more
+% features of a \LaTeX\ counter. However, the user should
+% better \emph{not} have access to this counter. ~\c@page~
+% should suffice as a pagewise master counter.---To be sure,
+% along the present lines the user \emph{can} manipulate
+% ~\c@LN@truepage~ by ~\stepcounter{page}~. E.g., she might
+% do this in order to manually insert a photograph. Well,
+% seems not to harm.
+%
+% The above usage of ~\g@addto@macro~ and ~\cl@page~ may be
+% not as stable as Stephan intended. His proposal used
+% ~\xdef~ directly. But he used ~\cl@page~ as well, and who
+% knows \dots{} And as to ~\g@addto@macro~, I have introduced
+% it for list macros anyway.
+% (/UL) (/New v4.00)
+%
+% From the aux-file we get one macro ~\LN@P~<page> for each
+% page with line numbers on it. This macro calls four other
+% macros with one argument each. These macros are
+% dynamically defined to do tests and actions, to find out
+% on which page the current line number is located.
+%
+% We need sort of a pointer to the first page with line
+% numbers, initiallized to point to nothing:
+
+\def\LastNumberedPage{first}
+\def\LN@Pfirst{\nextLN\relax}
+
+% The four dynamic macros are initiallized to reproduce
+% themselves in an ~\xdef~
+
+\let\lastLN\relax % compare to last line on this page
+\let\firstLN\relax % compare to first line on this page
+\let\pageLN\relax % get the page number, compute the linenumber
+\let\nextLN\relax % move to the next page
+
+% During the end-document run through the aux-files, we
+% disable ~\@LN~. I may put in a check here later, to give
+% a rerun recommendation.
+
+\AtEndDocument{\let\@LN\@gobbletwo}
+
+% Now, this is the tricky part. First of all, the whole
+% definition of ~\@LN~ is grouped, to avoid accumulation
+% on the save stack. Somehow ~\csname~<cs>~\endcsname~ pushes
+% an entry, which stays after an ~\xdef~ to that <cs>.
+%
+% If ~\LN@P~<page> is undefined, initialize it with the
+% current page and line number, with the
+% \emph{pointer-to-the-next-page} pointing to nothing. And
+% the macro for the previous page will be redefined to point
+% to the current one.
+%
+% If the macro for the current page already exists, just
+% redefine the \emph{last-line-number} entry.
+%
+% Finally, save the current page number, to get the pointer to the
+% following page later.
+
+\def\@LN#1#2{{\expandafter\@@LN
+ \csname LN@P#2C\@LN@column\expandafter\endcsname
+ \csname LN@PO#2\endcsname
+ {#1}{#2}}}
+
+\def\@@LN#1#2#3#4{\ifx#1\relax
+ \ifx#2\relax\gdef#2{#3}\fi
+ \expandafter\@@@LN\csname LN@P\LastNumberedPage\endcsname#1%
+ \xdef#1{\lastLN{#3}\firstLN{#3}%
+ \pageLN{#4}{\@LN@column}{#2}\nextLN\relax}%
+ \else
+ \def\lastLN##1{\noexpand\lastLN{#3}}%
+ \xdef#1{#1}%
+ \fi
+ \xdef\LastNumberedPage{#4C\@LN@column}}
+
+% The previous page macro gets its pointer to the
+% current one, replacing the ~\relax~ with the cs-token
+% ~\LN@P~<page>.
+
+\def\@@@LN#1#2{{\def\nextLN##1{\noexpand\nextLN\noexpand#2}%
+ \xdef#1{#1}}}
+
+% Now, to print a line number, we need to find the page,
+% where it resides. This will most probably be the page where
+% the last one came from, or maybe the next page. However, it can
+% be a completely different one. We maintain a cache,
+% which is ~\let~ to the last page's macro. But for now
+% it is initialized to expand ~\LN@first~, where the poiner
+% to the first numbered page has been stored in.
+
+\def\NumberedPageCache{\LN@Pfirst}
+
+% To find out on which page the current ~\c@linenumber~ is,
+% we define the four dynamic macros to do something usefull
+% and execute the current cache macro. ~\lastLN~ is run
+% first, testing if the line number in question may be on a
+% later page. If so, disable ~\firstLN~, and go on to the
+% next page via ~\nextLN~.
+
+\def\testLastNumberedPage#1{\ifnum#1<\c@linenumber
+ \let\firstLN\@gobble
+ \fi}
+
+% Else, if ~\firstLN~ finds out that we need an earlier
+% page, we start over from the beginning. Else, ~\nextLN~
+% will be disabled, and ~\pageLN~ will run
+% ~\gotNumberedPage~ with four arguments: the first line
+% number on this column, the page number, the column
+% number, and the first line on the page.
+
+\def\testFirstNumberedPage#1{\ifnum#1>\c@linenumber
+ \def\nextLN##1{\testNextNumberedPage\LN@Pfirst}%
+ \else
+ \let\nextLN\@gobble
+ \def\pageLN{\gotNumberedPage{#1}}%
+ \fi}
+
+% We start with ~\pageLN~ disabled and ~\nextLN~ defined to
+% continue the search with the next page.
+
+\long\def \@gobblethree #1#2#3{}
+
+\def\testNumberedPage{%
+ \let\lastLN\testLastNumberedPage
+ \let\firstLN\testFirstNumberedPage
+ \let\pageLN\@gobblethree
+ \let\nextLN\testNextNumberedPage
+ \NumberedPageCache
+ }
+
+% When we switch to another page, we first have to make
+% sure that it is there. If we are done with the last
+% page, we probably need to run \TeX\ again, but for the
+% rest of this run, the cache macro will just return four
+% zeros. This saves a lot of time, for example if you have
+% half of an aux-file from an aborted run, in the next run
+% the whole page-list would be searched in vain again and
+% again for the second half of the document.
+%
+% If there is another page, we iterate the search.
+
+\def\testNextNumberedPage#1{\ifx#1\relax
+ \global\def\NumberedPageCache{\gotNumberedPage0000}%
+ \PackageWarningNoLine{lineno}%
+ {Linenumber reference failed,
+ \MessageBreak rerun to get it right}%
+ \else
+ \global\let\NumberedPageCache#1%
+ \fi
+ \testNumberedPage
+ }
+
+% \linelabel{demo2}
+% \marginpar{\tiny\raggedright
+% Let's see if it finds the label
+% on page \pageref{demo},
+% line \ref{demo}, and back here
+% on page \pageref{demo2}, line
+% \ref{demo2}.
+% \unskip}%
+% To separate the official hooks from the internals there is
+% this equivalence, to hook in later for whatever purpose:
+
+\let\getLineNumber\testNumberedPage
+
+% So, now we got the page where the number is on. We
+% establish if we are on an odd or even page, and calculate
+% the final line number to be printed.
+
+\newif\ifoddNumberedPage
+\newif\ifcolumnwiselinenumbers
+\columnwiselinenumbersfalse
+
+\def\gotNumberedPage#1#2#3#4{\oddNumberedPagefalse
+ \ifodd \if@twocolumn #3\else #2\fi\relax\oddNumberedPagetrue\fi
+ \advance\c@linenumber\@ne
+ \ifcolumnwiselinenumbers
+ \subtractlinenumberoffset{#1}%
+ \else
+ \subtractlinenumberoffset{#4}%
+ \fi
+ }
+
+% You might want to run the pagewise mode with running line
+% numbers, or you might not. It's your choice:
+
+\def\runningpagewiselinenumbers{%
+ \let\subtractlinenumberoffset\@gobble
+ }
+
+\def\realpagewiselinenumbers{%
+ \def\subtractlinenumberoffset##1{\advance\c@linenumber-##1\relax}%
+ }
+
+\realpagewiselinenumbers
+
+% For line number references, we need a protected call to
+% the whole procedure, with the requested line number stored
+% in the ~\c@linenumber~ counter. This is what gets printed
+% to the aux-file to make a label:
+
+\def\thePagewiseLineNumber{\protect
+ \getpagewiselinenumber{\the\c@linenumber}}%
+
+% And here is what happens when the label is refered to:
+
+\def\getpagewiselinenumber#1{{%
+ \c@linenumber #1\relax\testNumberedPage
+ \thelinenumber
+ }}
+
+% %
+% A summary of all per line expenses:
+% \begin{description}\item
+% [CPU:] The ~\output~ routine is called for each line,
+% and the page-search is done.
+% \item
+% [DISK:] One line of output to the aux-file for each
+% numbered line
+% \item
+% [MEM:] One macro per page. Great improvement over v1.02,
+% which had one control sequence per line in
+% addition. It blew the hash table after some five
+% thousand lines.
+% \end{description}
+%
+% \subsection{%
+% Twocolumn mode (New v3.06)
+% \unskip}
+%
+% Twocolumn mode requires another patch to the ~\output~
+% routine, in order to print a column tag to the .aux
+% file.
+
+\AtBeginDocument{% v4.2, revtex4.cls (e.g.).
+ % <- TODO v4.3+: Or better in \LineNoLaTeXOutput!?
+ \let\@LN@orig@makecol\@makecol}
+\def\@LN@makecol{%
+ \@LN@orig@makecol
+ \setbox\@outputbox \vbox{%
+ \boxmaxdepth \@maxdepth
+ \protected@write\@auxout{}{%
+ \string\@LN@col{\if@firstcolumn1\else2\fi}%
+ }%
+ \unvbox\@outputbox % v4.22, was \box
+ }% \vbox
+} %% TODO cf. revtexln.sty.
+
+\def\@LN@col{\def\@LN@column} % v4.22, removed #1.
+\@LN@col{1}
+
+%
+% \subsection{%
+% Numbering modulo $m$, starting at $f$
+%% Numbering modulo 5
+% \unskip}\label{ss:Mod}
+%
+% Most users want to have only one in five lines numbered.
+% ~\LineNumber~ is supposed to produce the outfit of the
+% line number attached to the line, while ~\thelinenumber~
+% is used also for references, which should appear even if
+% they are not multiples of five.
+%
+% (New v4.00) Moreover, some users want to
+% control which line number should be printed first. Support
+% of this is now introduced here---see ~\firstlinenumber~
+% below.---~numline.sty~ by Michael Jaegermann and
+% James Fortune offers controlling which \emph{final}
+% line numbers should not be printed. What is
+% it good for? We ignore this here until some user demands
+% it.---Peter Wilson's ~ledmac.sty~ offers much different
+% choices of line numbers to be printed, due to Wayne Sullivan.
+% (/New v4.00)
+%
+% (New v4.22) ~\c@linenumbermodulo~ is rendered a
+% fake counter, as discussed since v4.00. So it can
+% no longer be set by ~\setcounter~. ~\modulolinenumbers~
+% serves this purpose. Well, does anybody want to do
+% what worked with ~\addtocounter~? (Then please tell
+% me.)---At least, ~\value~ still works. For the same
+% purpose I rename the fake `firstlinenumber' counter
+% ~\n@...~ to ~\c@...~. (/New v4.22)
+% \begin{old}\begin{verbatim}
+% % \newcount\c@linenumbermodulo % removed for v4.22
+% \end{verbatim}
+% \end{old}
+%
+%% Removed for v4.22:
+%% (UL) On my question why, e.g.,
+%% ~\chardef~ would not have sufficed, Stephan couldn't remember
+%% exactly; guessed that he wanted to offer \LaTeX\ counter
+%% facilities. However, the typical ones don't come this way.
+%% So I'm quite sure that I will change this next time.
+%%
+%% However, I observed at least two times that users gave a very
+%% high value to ~\c@linenumbermodulo~ in order to suppress
+%% printing of the line number. One of these users preferred an
+%% own way of handling line numbers, just wanted to use
+%% ~\linelabel~ and ~ednotes.sty~ features. Should we support this?
+%% I rather would like to advise them to
+%% ~\let\makeLineNumber\relax~. (/UL)
+%
+% (New v4.00) \par
+% ~\themodulolinenumber~ waits for being declared
+% ~\LineNumber~ by ~\modulolinenumbers~. (This has
+% been so before, no change.) Here is how it
+% looked before:
+% \begin{old}\begin{verbatim}
+% % \def\themodulolinenumber{{\@tempcnta\c@linenumber
+% % \divide\@tempcnta\c@linenumbermodulo
+% % \multiply\@tempcnta\c@linenumbermodulo
+% % \ifnum\@tempcnta=\c@linenumber\thelinenumber\fi
+% % }}
+% \end{verbatim}
+% \end{old}
+% (UL) This was somewhat slow. This arithmetic
+% happens at every line. This time I tend to declare an extra
+%% TODO v4.3+
+% line counter (as opposed to my usual recommendations to use
+% counters as rarely as possible) which is stepped every line.
+% It could be incremented in the same way as ~\c@LN@truepage~
+% is incremented via ~\cl@page~! This is another point in favour
+% of ~{linenumber}~ being a \LaTeX\ counter!
+% When this new counter equals ~\c@linenumbermodulo~, it is reset,
+% and ~\thelinenumber~ is executed.---It gets much slower by my
+% support of controlling the first line number below. I should
+% improve this.---On
+%% %% TODO v4.3+--pagewise!?
+% the other hand, time expense means very little nowadays,
+% while the number of \TeX\ counters still is limited.
+%
+% For the same purpose, moreover, attaching the line number
+% box could be intercepted earlier (in ~\MakeLineNo~),
+% without changing ~\LineNumber~. However, this may be
+% bad for the latter's announcement as a wizard interface
+% in section_\ref{s:UserCmds}.
+%%
+%% I wonder about Stephan's group. Its only effect is that
+%% ~\@tempcnta~ is restored after using it. What for is this?
+%% I tend to remove the group braces. %% TODO v4.3+
+% (/UL)
+%
+% Here is the new code. It is very near to my ~lnopatch.sty~
+% code which introduced the first line number feature
+% before.---I add starting with a ~\relax~ which is so often
+% recommended---without understanding this really. At least,
+% it will not harm.---Former group braces appear as
+% ~\begingroup~/~\endgroup~ here.
+
+\def\themodulolinenumber{\relax
+ \ifnum\c@linenumber<\c@firstlinenumber \else
+ \begingroup
+ \@tempcnta\c@linenumber
+ \advance\@tempcnta-\c@firstlinenumber
+ \divide\@tempcnta\c@linenumbermodulo
+ \multiply\@tempcnta\c@linenumbermodulo
+ \advance\@tempcnta\c@firstlinenumber
+ \ifnum\@tempcnta=\c@linenumber \thelinenumber \fi
+ \endgroup
+ \fi
+}
+
+% (/New v4.00)
+%
+% The user command to set the modulo counter:
+% (New v4.31) \dots\ a star variant is introduced to implement
+% Hillel Chayim Yisraeli's idea to print the first line number
+% after an interruption of the edited text by some editor's
+% text, regardless of the modulo. If it is 1, it is printed only
+% with ~\firstlinenumber{1}~. I.e., you use ~\modulolinenumbers*~
+% for the new feature, without the star you get the simpler
+% behaviour that we have had so far. And you can switch back
+% from the refined behaviour to the simple one by using
+% ~\modulolinenumbers~ without the star.---This enhancement
+% is accompanied by a new package option ~modulo*~ which just
+% executes ~\modulolinenumbers*~
+% (subsection_\ref{ss:v3opts}).---`With ~\firstlinenumber{1}~'
+% exactly means: `1' is printed if and only if the last
+% ~\firstlinenumber~ before or in the paragraph that follows
+% the ``interruption'' has argument `1' (or something
+% \emph{expanding} to `1', or (to) something that \TeX\
+% ``reads'' as 1, e.g.: a \TeX\ count register storing
+% 1).---At present, this behaviour may be unsatisfactory with
+% pagewise line-numbering $\dots$ I'll make an experimental
+% extra package if someone complains \dots
+
+\newcommand\modulolinenumbers{%
+ \@ifstar
+ {\def\@LN@maybe@moduloresume{%
+ \global\let\@LN@maybe@normalLineNumber
+ \@LN@normalLineNumber}%
+ \@LN@modulolinenos}%
+ {\let\@LN@maybe@moduloresume\relax \@LN@modulolinenos}%
+}
+
+\global\let\@LN@maybe@normalLineNumber\relax
+\let\@LN@maybe@moduloresume\relax
+\gdef\@LN@normalLineNumber{%
+ \ifnum\c@linenumber=\c@firstlinenumber \else
+ \ifnum\c@linenumber>\@ne
+ \def\LineNumber{\thelinenumber}%
+ \fi
+ \fi
+%%
+% ~\def~ instead of ~\let~ enables taking account of a
+% redefinition of ~\thelinenumber~ in a present numbering
+% environment (e.g.).
+%%
+ \global\let\@LN@maybe@normalLineNumber\relax}
+
+% Instead of changing ~\LineNumber~ directly by
+% ~LN@moduloresume~, these tricks enable ~\modulolinenumbers*~
+% to act as locally as I can make it. I don't know how to
+% avoid that the output routine switches back to the normal
+% modulo behaviour by a global change. (An ~\aftergroup~ may
+% fail in admittedly improbable cases.)
+
+\newcommand*\@LN@modulolinenos[1][\z@]{%
+%%
+% The definition of this macro is that of the former
+% ~\modulolinenumbers~. (/New v4.31)
+%%
+ \let\LineNumber\themodulolinenumber
+ \ifnum#1>\@ne
+ \chardef % v4.22, note below
+ \c@linenumbermodulo#1\relax
+ \else\ifnum#1=\@ne
+% \begin{old}\begin{verbatim}
+% % \def\LineNumber{\thelinenumber}%
+% \end{verbatim}
+% \end{old}
+% (New v4.00) I am putting something here to enable
+% ~\firstlinenumber~ with $~\c@linenumbermodulo~=1$.
+% With ~lnopatch.sty~, a trick was offered for this purpose.
+% It is now obsolete.
+%
+ \def\LineNumber{\@LN@ifgreat\thelinenumber}%
+%%
+% (/New v4.00)
+%%
+ \fi\fi
+ }
+
+% (New v4.00) The default of ~\@LN@ifgreat~ is
+
+\let\@LN@ifgreat\relax
+
+% The previous changes as soon as ~\firstlinenumber~ is used:
+
+\newcommand*\firstlinenumber[1]{%
+ \chardef\c@firstlinenumber#1\relax
+%%
+% No counter, little values allowed only---OK?---(UL)
+% The change is local---OK? The good thing is that
+% ~\global\firstlinenumber{~<number>~}~ works. Moreover,
+% ~\modulolinenumbers~ acts locally as well. (/UL)
+%
+% (New v4.31)
+%%
+ \let\@LN@ifgreat\@LN@ifgreat@critical}
+
+\def\@LN@ifgreat@critical{%
+ \ifnum\c@linenumber<\c@firstlinenumber
+ \expandafter \@gobble
+ \fi}%
+
+% (/New v4.31)
+%
+% The default
+% value of ~\c@firstlinenumber~ %% v4.31
+% is 0. This is best for what one would expect from modulo
+% printing.
+
+\let\c@firstlinenumber=\z@
+
+%
+% For usage and effects of ~\modulolinenumbers~ and %% v4.31
+% ~\firstlinenumbers~, please consult section_\ref{s:UserCmds}.
+% Two details on ~\firstlinenumbers~ here:
+% (i)_~\firstlinenumber~ acts on a paragraph if and only if
+% (a)_the paragraph is broken into lines ``in line-numbering
+% mode'' (after ~\linenumbers~, e.g.);
+% (b)_it is the last occurrence of a ~\firstlinenumbers~
+% before or in the paragraph.
+% (The practical applications of this that I can imagine
+% don't seem appealing to me.)
+% Cf._the explanation above of how ~\modulolinenumbers~ and
+% ~\firstlinenumbers~ interact---for this and for (ii),
+% which is concerned with possible arguments for
+% ~\firstlinenumbers~.
+%
+% Note that the line numbers of the present section
+% demonstrate the two devices. (/New v4.00)
+
+%%\setcounter{linenumbermodulo}{5}
+\chardef\c@linenumbermodulo=5 % v4.2; ugly?
+\modulolinenumbers[1]
+
+% (New v4.22) The new implementation through ~\chardef~
+% decreases the functionality and raises certain compatibility
+% problems. I face this without fear. The maximum modulo value
+% is now ~255~. I expect that this suffices for usual applications.
+% However, some users have ``abused'' ~lineno.sty~ to get
+% ~ednotes.sty~ features without line numbers, so have set the
+% modulo to a value beyond the total number of lines in their
+% edition. This ought to be replaced by
+% ~\let\makeLineNumber\relax~. (/New v4.22)
+%
+% \section{%
+% Package options
+% \unskip}\label{s:Opts}
+%
+% (New v4.1)
+% The last heading formerly was the heading of what is now
+% subsection_\ref{ss:v3opts}. The options declared there were
+% said to execute user commands only. This was wrong already
+% concerning ~displaymath~ and ~hyperref~. At least, however,
+% these options were no or almost no occasion to skip definitions
+% or allocations. This is different with the options that we now
+% insert.
+%
+%% (New v4.2) v4.00 moved the ``options'' below the
+%% ``extensions''. This was bad with ~\do@mlineno~ in
+%% subsection_\ref{ss:v3opts} which is to control
+%% subsection_\ref{ss:display}---undone here. (/New v4.2)
+%
+% \subsection{%
+% Extended referencing to line numbers. (v4.2)
+% \unskip}
+% This subsection explains and declares package option ~addpageno~. %% v4.31
+%
+% If a line to whose number you refer by ~\ref~ is not on the
+% present page, it may be useful to add the number of the page
+% on which the line occurs---and perhaps it should not be added
+% otherwise. In general, you could use the Standard \LaTeX\
+% package varioref for this. However, the latter usually
+% produces verbose output like `on the preceding page'---
+% unless costumized---, while in critical editions, e.g., one
+% may prefer just adding the page number and some mark on the
+% left of the line number, irrespectively of how far the page is
+% apart etc. To support this, package option ~addpageno~
+% provides a command ~\vpagelineref~ to be used in place of
+% ~\ref~. This produces, e.g., `34.15' when referring to line_15
+% on page_34 while the present page is not 34. You can customize
+% the outcome, see the package file ~vplref.sty~ where the code
+% and further details are. You may conceive of
+% ~\vpagelineref~ as a certain customization of varioref's
+% ~\vref~.
+%
+% This implies that option ~addpageno~ requires the files
+% ~vplref.sty~ and ~varioref.sty~. ~addpageno~ automatically
+% loads both of them. Yet you can also load ~varioref.sty~
+% on your own to use its package options.
+%
+% Of course, you might better introduce a shorter command name
+% for ~\vpagelineref~ for your work, while we cannot predict
+% here what shorthand will fit your work. E.g.,
+% ~\newcommand{\lref}{\vpagelineref}~.
+%
+% If you really want to add the page number in \emph{any} case,
+% use, e.g., some ~\myref~ instead of ~\ref~, after
+% \[~newcommand*{\myref}{\pageref{#1}.\ref{#1}}~\]
+% or what you like. You don't need the ~addpageno~ option in
+% this case.
+%
+% ~addpageno~ is due to a suggestion by Sergei Mariev.
+
+\DeclareOption{addpageno}{%
+ \AtEndOfPackage{\RequirePackage{vplref}[2005/04/25]}}
+
+% \subsection{%
+% \scs{linelabel} in math mode
+% \unskip}\label{ss:MathRef}
+%
+% We have made some first steps towards allowing ~\linelabel~ in
+% math mode. Because our code for this is presently experimental,
+% we leave it to the user to decide for the experiment by calling
+% option ~mathrefs~. We are in a hurry now and thus leave the
+% code, explanations, and discussion in the separate package
+% ~ednmath0.sty~. Maybe we later find the time to improve the
+% code and move the relevant content of ~ednmath0.sty~ to here.
+% The optimal situation would be to define ~\linelabel~ from
+% the start so it works in math mode, omitting the ~mathrefs~
+% option.
+%
+% Actually, this package even provides adjustments for analogously
+% allowing ~ednotes.sty~ commands in math mode. Loading the package
+% is postponed to ~\AtBeginDocument~ when we know whether these
+% adjustments are needed.
+
+\DeclareOption{mathrefs}{\AtBeginDocument
+ {\RequirePackage{ednmath0}[2004/08/20]}}
+
+%
+% \subsection{%
+% Arrays, tabular environments (Revised v4.11)
+% \unskip}\label{ss:Tab}
+%
+% This subsection explains and declares package options %% v4.31
+% ~edtable~, ~longtable~, and ~nolongtablepatch~.
+%
+% The standard \LaTeX\ tabular environments come as single
+% boxes, so the ~lineno.sty~ versions before v4.00 treated them as
+% (parts of) single lines, printing (at most) one line number
+% beside each and stepping the line number counter once only.
+% Moreover, ~\linelabel~s got lost. Of course, tables are
+% usually so high that you will want to treat each row like a
+% line. (Christian Tapp even desires that the lines of table
+% entries belonging to a single row are treated like ordinary
+% lines.) Footnotes get lost in such environments as well, which
+% was bad for ~ednotes.sty~.
+%
+% We provide adjustments to count lines, print their numbers
+% etc.\ as desired at least for \emph{some} \LaTeX\ tabular
+% environments. (Like with other details, ``some'' is to some
+% extent explained in ~edtable.sty~.) We do this similarly as
+% with option ~mathrefs~ before. We leave code
+% and explanations in the separate package ~edtable.sty~.
+% (For wizards: this package provides adjustments for
+% ~ednotes.sty~ as well. However, in the present case we don't try
+% to avoid them unless ~ednotes.sty~ is loaded.)
+% Package option ~edtable~
+% defines---by loading ~edtable.sty~---an environment ~{edtable}~
+% which is able to change some \LaTeX\ tabular environments
+% with the desired effects. (v4.11: ~edtable.sty~ v1.3 counts
+% \LaTeX's ~{array}~ [etc.\@] as a ``tabular environment'' as
+% well.)
+%
+% The ~{edtable}~ environment doesn't help with ~longtable.sty~,
+% however. To make up for this, ~{longtable}~ is adjusted in a
+% different way---and this happens only when another ~lineno.sty~
+% option ~longtable~ is called. In this case, option ~edtable~
+% needn't be called explicitly: option ~longtable~ works as if
+% ~edtable~ had been called.
+%
+% Now, we are convinced that vertical spacing around
+% ~{longtable}~ works wrongly---see \LaTeX\ bugs database
+% tools/3180 and 3485, or see explanations in the package
+% ~ltabptch.sty~ (which is to be obtained from CTAN folder
+% \path{macros/latex/ltabptch}). Our conviction is so strong
+% that the ~longtable~ option loads---after ~longtable.sty~---the
+% patch package ~ltabptch.sty~. If the user doesn't want this
+% (maybe preferring her own arrangement with the vertical
+% spacing), she can forbid it by calling ~nolongtablepatch~.
+%
+% The following code just collects some choices, which are
+% then executed in section_\ref{ss:ExOpt}. We use an ~\if...~
+% without ~\newif~ since ~\if...true~ and ~\if...false~
+% would occur at most two times and only within the present
+% package. (~\AtEndOfClass{\RequirePackage{edtable}}~
+% could be used instead, I just overlooked this. Now I don't
+% change it because it allows to change the version requirement
+% at one place only.)
+
+\let\if@LN@edtable\iffalse
+
+\DeclareOption{edtable}{\let\if@LN@edtable\iftrue}
+
+\DeclareOption{longtable}{\let\if@LN@edtable\iftrue
+ \PassOptionsToPackage{longtable}{edtable}}
+
+\DeclareOption{nolongtablepatch}{%
+ \PassOptionsToPackage{nolongtablepatch}{edtable}}
+
+% (/New v4.1)
+%
+% \subsection{%
+% Switch among settings
+% \unskip}\label{ss:v3opts}
+%
+% There is a bunch of package options that execute %% v4.2
+%% There is a bunch of package options, all of them executing
+%% executing only user commands (see below). %% Cf. start of section.
+% user commands only.
+%
+% Options ~left~ (~right~) put the line numbers on the left
+% (right) margin. This works in all modes. ~left~ is the
+% default.
+
+\DeclareOption{left}{\leftlinenumbers*}
+
+\DeclareOption{right}{\rightlinenumbers*}
+
+% Option ~switch~ (~switch*~) puts the line numbers on the
+% outer (inner) margin of the text. This requires running
+% the pagewise mode, but we turn off the page offset
+% subtraction, getting sort of running numbers again. The
+% ~pagewise~ option may restore true pagewise mode later.
+
+\DeclareOption{switch}{\setpagewiselinenumbers
+ \switchlinenumbers
+ \runningpagewiselinenumbers}
+
+\DeclareOption{switch*}{\setpagewiselinenumbers
+ \switchlinenumbers*%
+ \runningpagewiselinenumbers}
+
+% In twocolumn mode, we can switch the line numbers to
+% the outer margin, and/or start with number 1 in each
+% column. Margin switching is covered by the ~switch~
+% options.
+
+\DeclareOption{columnwise}{\setpagewiselinenumbers
+ \columnwiselinenumberstrue
+ \realpagewiselinenumbers}
+
+% The options ~pagewise~ and ~running~ select the major
+% linenumber mechanism. ~running~ line numbers refer to a real
+% counter value, which can be reset for any paragraph,
+% even getting multiple paragraphs on one page starting
+% with line number one. ~pagewise~ line numbers get a
+% unique hidden number within the document, but with the
+% opportunity to establish the page on which they finally
+% come to rest. This allows the subtraction of the page
+% offset, getting the numbers starting with 1 on top of each
+% page, and margin switching in twoside formats becomes
+% possible. The default mode is ~running~.
+%
+% The order of declaration of the options is important here
+% ~pagewise~ must come after ~switch~, to overide running
+% pagewise mode. ~running~ comes last, to reset the running
+% line number mode, e.g, after selecting margin switch mode
+% for ~pagewise~ running. Once more, if you specify all
+% three of the options ~[switch,pagewise,running]~, the
+% result is almost nothing, but if you later say
+% ~\pagewiselinenumbers~, you get margin switching, with
+% real pagewise line numbers.
+%
+\DeclareOption{pagewise}{\setpagewiselinenumbers
+ \realpagewiselinenumbers}
+
+\DeclareOption{running}{\setrunninglinenumbers}
+
+% The option ~modulo~ causes only those linenumbers to be
+% printed which are multiples of five.
+
+\DeclareOption{modulo}{\modulolinenumbers\relax}
+
+% Option ~modulo*~ modifies ~modulo~ in working like
+% ~\modulolinenumbers*~---see section_\ref{s:UserCmds}.
+
+\DeclareOption{modulo*}{\modulolinenumbers*\relax}
+
+% The package option ~mathlines~ switches the behavior of
+% the ~{linenomath}~ environment with its star-form.
+% Without this option, the ~{linenomath}~ environment does
+% not number the lines of the display, while the star-form
+% does. With this option, its just the opposite.
+%
+%%% 1999-06-10: renamed ~displaymath~ to ~mathlines~.
+
+\DeclareOption{mathlines}{\linenumberdisplaymath}
+
+% ~displaymath~ now calls for wrappers of the standard
+% \LaTeX\ display math environment. This was previously
+% done by ~mlineno.sty~.
+%
+% (New v4.3) Option `displaymath' becomes default according
+% to Erik \mbox{Luijten}'s suggestion. I was finally convinced
+% of this as soon as I discovered how to avoid a spurious line
+% number above ~\begin{linenomath}~ (subsection_\ref{ss:DM}).
+% ~\endlinenomath~ provides ~\ignorespaces~, so what could go
+% wrong now?
+
+\DeclareOption{displaymath}{\PackageWarningNoLine{lineno}{%
+ Option [displaymath] is obsolete -- default now!}}
+%%
+%%\let\do@mlineno\relax
+%%\DeclareOption{displaymath}{\let\do@mlineno\@empty}
+% (/New v4.3)
+%
+% \subsection{%
+% Compatibility with \texttt{hyperref} %% own subsec. v4.3.
+% \unskip}
+% The ~hyperref~ package, via ~nameref~, requires three more
+% groups in the second argment of a ~\newlabel~. Well, why
+% shouldn't it get them? (New v3.07) The presence of the
+% ~nameref~ package is now detected automatically
+% ~\AtBeginDocument~. (/New v3.07) (Fixed in v3.09) We try
+% to be smart, and test ~\AtBeginDocument~ if the ~nameref~
+% package is loaded, but ~hyperref~ postpones the loading of
+% ~nameref~ too, so this is all in vain.
+%
+% (New v4.3) But we can also test at the first ~\linelabel~.
+% Regarding the error-message for misplaced ~\linelabel~ from v4.11:
+% previously, ~\linenumbers~ rendered ~\linelabel~ the genuine
+% version of ~\linelabel~ from the start on. This doesn't work
+% now, since ~\@LN@linelabel~ may change its meaning after the
+% first ~\linenumbers~ and before a next one (if there is some).
+% (/New v4.3)
+
+\DeclareOption{hyperref}{\PackageWarningNoLine{lineno}{%
+ Option [hyperref] is obsolete.
+ \MessageBreak The hyperref package is detected automatically.}}
+
+\AtBeginDocument{%
+ \@ifpackageloaded{nameref}{%
+%%
+% (New v4.3) ``Global'' is merely ``symbolic'' ~\AtBeginDoc...~.
+% If ~nameref~ is not detected here, the next ~\@LN@linelabel~
+% will do almost the same, then globally indeed.
+%%
+ \gdef\@LN@ExtraLabelItems{{}{}{}}%
+ }{%
+ \global\let\@LN@@linelabel\@LN@linelabel
+ \gdef\@LN@linelabel{%
+%%
+% ~\@ifpackageloaded~ is ``preamble only'', its---very
+% internal---preamble definition is replicated here:
+%%
+ \expandafter
+ \ifx\csname ver@nameref.sty\endcsname\relax \else
+ \gdef\@LN@ExtraLabelItems{{}{}{}}%
+ \fi
+%%
+% Now aim at the ``usual'' behaviour:
+%%
+ \global\let\@LN@linelabel\@LN@@linelabel
+ \global\let\@LN@@linelabel\relax
+ \@LN@linelabel
+ }%
+ }%
+}
+
+% (/New v4.3)
+%
+% (New v4.1)
+% \subsection{%
+% A note on calling so many options
+% \unskip}
+%
+% The number of package options may stimulate worrying about how to
+% \emph{enter} all the options that one would like to use---they may
+% not fit into one line. Fortunately, you can safely break code lines
+% after the commas separating the option names in the ~\usepackage~
+% command (no comment marks needed).
+%
+% \subsection{%
+% Execute options
+% \unskip}\label{ss:ExOpt}
+%
+% We stop declaring options and execute the ones that are
+% called by the user. (/New v4.1)
+
+\ProcessOptions
+
+% (New v4.1) Now we know whether ~edtable.sty~ is wanted
+% and (if it is) with which options it is to be called.
+
+\if@LN@edtable \RequirePackage{edtable}[2005/03/07] \fi
+
+% (/New v4.1)
+%
+% \section{%
+% Former package extensions
+% \label{s:Xt}\unskip}
+%
+% The extensions in this section were previously supplied
+% in separate ~.sty~ files.
+%
+% \subsection{%
+% $display math$
+% \unskip}\label{ss:display}
+%% (New v4.32)
+% (New v4.3) From now on, you no longer need to type
+% the ~{linenomath}~ environment with the ~\[~, ~{equation}~,
+% and ~{eqnarray}~ environments---and you no longer need to
+% use the former package option ~displaymath~ for this feature.
+% (/New v4.3)
+%% (/New v4.32)
+%
+% The standard \LaTeX\ display math environments are
+% wrapped in a ~{linenomath}~ environment.
+%
+% (New 3.05) The ~[fleqn]~ option of the standard
+% \LaTeX\ classes defines the display math
+% environments such that line numbers appear just
+% fine. Thus, we need not do any tricks when
+% ~[fleqn]~ is loaded, as indicated by presents of
+% the ~\mathindent~ register. (/New 3.05)
+%
+% (New 3.05a) for ~{eqnarray}~s we rather keep the
+% old trick. (/New 3.05a)
+%
+% (New 3.08) Wrap ~\[~ and ~\]~ into ~{linenomath}~,
+% instead of ~{displaymath}~. Also save the definition
+% of ~\equation~, instead of replicating the current
+% \LaTeX\ definition. (/New 3.08)
+
+%%\ifx\do@mlineno\@empty
+ \@ifundefined{mathindent}{
+
+%% \AtBeginDocument{%
+ \let\LN@displaymath\[%
+ \let\LN@enddisplaymath\]%
+ \renewcommand\[{\begin{linenomath}\LN@displaymath}%
+ \renewcommand\]{\LN@enddisplaymath\end{linenomath}}%
+%
+ \let\LN@equation\equation
+ \let\LN@endequation\endequation
+ \renewenvironment{equation}%
+ {\linenomath\LN@equation}%
+ {\LN@endequation\endlinenomath}%
+%% }
+
+ }{}% \@ifundefined{mathindent} -- 3rd arg v4.2, was \par!
+
+%%\AtBeginDocument{%
+ \let\LN@eqnarray\eqnarray
+ \let\LN@endeqnarray\endeqnarray
+ \renewenvironment{eqnarray}%
+ {\linenomath\LN@eqnarray}%
+ {\LN@endeqnarray\endlinenomath}%
+%%}
+
+%%\fi
+
+% (UL) Indeed. The \LaTeX\ macros are saved for
+% unnumbered mode, which is detected by ~\linenomath~.
+% (/UL)
+%
+% \subsection{%
+% Line numbers in internal vertical mode
+% \unskip}\label{ss:ILN}
+%
+% The command ~\internallinenumbers~ adds line numbers in
+% internal vertical mode, but with limitations: we assume
+% fixed baseline skip.
+%
+% (v4.22) v3.10 provided a global (~\global\advance~)
+% as well as a local version (star-form, using
+% ~\c@internallinenumber~). ~\resetlinenumbers~ acted
+% locally and was here used with the global version---save
+% stack danger, \TeX book p._301---in v4.00 I
+% disabled the global version therefore. Now I find that
+% it is better to keep a global version, and the now global
+% ~\resetlinenumbers~ is perfect for this. The global version
+% allows continuing the ``internal'' numbers in the ensuing
+% ``external'' text, and---unless reset by brackets
+% argument---continuing the above series of line numbers.
+% As with v3.10, the local version always starts with
+% line number one. A new ~\@LN@iglobal~ steps ~\global~ly
+% in the global version, otherwise it is ~\relax~.
+% (I also remove all my stupid discussions as of v4.00.
+% And I use ~\newcommand~.) (v4.22)
+
+\let\@LN@iglobal\global % v4.22
+
+\newcommand\internallinenumbers{\setrunninglinenumbers
+ \let\@@par\internallinenumberpar
+ \ifx\@par\@@@par\let\@par\internallinenumberpar\fi
+ \ifx\par\@@@par\let\par\internallinenumberpar\fi
+ \ifx\@par\linenumberpar\let\@par\internallinenumberpar\fi
+ \ifx\par\linenumberpar\let\par\internallinenumberpar\fi
+ \@ifnextchar[{\resetlinenumber}%]
+ {\@ifstar{\let\c@linenumber\c@internallinenumber
+ \let\@LN@iglobal\relax % v4.22
+ \c@linenumber\@ne}{}}%
+ }
+
+\let\endinternallinenumbers\endlinenumbers
+\@namedef{internallinenumbers*}{\internallinenumbers*}
+\expandafter\let\csname endinternallinenumbers*\endcsname\endlinenumbers
+
+\newcount\c@internallinenumber
+\newcount\c@internallinenumbers
+
+\newcommand\internallinenumberpar{%
+ \ifvmode\@@@par\else\ifinner\@@@par\else\@@@par
+ \begingroup
+ \c@internallinenumbers\prevgraf
+ \setbox\@tempboxa\hbox{\vbox{\makeinternalLinenumbers}}%
+ \dp\@tempboxa\prevdepth
+ \ht\@tempboxa\z@
+ \nobreak\vskip-\prevdepth
+ \nointerlineskip\box\@tempboxa
+ \endgroup
+ \fi\fi
+ }
+
+\newcommand\makeinternalLinenumbers{%
+ \ifnum\c@internallinenumbers>\z@ % v4.2
+ \hb@xt@\z@{\makeLineNumber}%
+ \@LN@iglobal % v4.22
+ \advance\c@linenumber\@ne
+ \advance\c@internallinenumbers\m@ne
+ \expandafter\makeinternalLinenumbers\fi
+ }
+ % TODO v4.3+: star: line numbers right!? cf. lnocapt.sty
+
+%
+% \subsection{%
+% Line number references with offset
+% \unskip}
+%
+% This extension defines macros to refer to line
+% numbers with an offset, e.g., to refer to a line
+% which cannot be labeled directly (display math).
+% This was formerly knows as ~rlineno.sty~.
+%
+% To refer to a pagewise line number with offset:
+% \begin{quote}
+% ~\linerefp[~<OFFSET>~]{~<LABEL>~}~
+% \end{quote}
+% To refer to a running line number with offset:
+% \begin{quote}
+% ~\linerefr[~<OFFSET>~]{~<LABEL>~}~
+% \end{quote}
+% To refer to a line number labeled in the same mode as currently
+% selected:
+% \begin{quote}
+% ~\lineref[~<OFFSET>~]{~<LABEL>~}~
+% \end{quote}
+
+\newcommand\lineref{%
+ \ifx\c@linenumber\c@runninglinenumber
+ \expandafter\linerefr
+ \else
+ \expandafter\linerefp
+ \fi
+}
+
+\newcommand*\linerefp[2][\z@]{{%
+ \let\@thelinenumber\thelinenumber
+ \edef\thelinenumber{\advance\c@linenumber#1\relax
+ \noexpand\@thelinenumber}%
+ \ref{#2}%
+}}
+
+% This goes deep into \LaTeX's internals.
+
+\newcommand*\linerefr[2][\z@]{{%
+ \def\@@linerefadd{\advance\c@linenumber#1}%
+ \expandafter\@setref\csname r@#2\endcsname
+ \@linerefadd{#2}%
+}}
+
+\newcommand*\@linerefadd[2]{\c@linenumber=#1\@@linerefadd\relax
+ \thelinenumber}
+
+%% TODO v4.3+: Insert `LN' in internal command names?
+%
+% \subsection{%
+% Numbered quotation environments
+% \unskip}
+%
+% The ~{numquote}~ and ~{numquotation}~
+% environments are like ~{quote}~ and
+% ~{quotation}~, except there will be line
+% numbers.
+%
+% An optional argument gives the number to count
+% from. A star ~*~ (inside or outside the closing
+% ~}~) prevent the reset of the line numbers.
+% Default is to count from one.
+%
+% (v4.22: A local version using ~\c@internallinenumber~
+% might be useful, see subsection_\ref{ss:ILN}.) %% TODO v4.3+
+
+\newcommand\quotelinenumbers
+ {\@ifstar\linenumbers{\@ifnextchar[\linenumbers{\linenumbers*}}}
+
+\newdimen\quotelinenumbersep
+\quotelinenumbersep=\linenumbersep
+\let\quotelinenumberfont\linenumberfont
+
+\newcommand\numquotelist
+ {\leftlinenumbers
+ \linenumbersep\quotelinenumbersep
+ \let\linenumberfont\quotelinenumberfont
+ \addtolength{\linenumbersep}{-\@totalleftmargin}%
+ \quotelinenumbers
+ }
+
+\newenvironment{numquote} {\quote\numquotelist}{\endquote}
+\newenvironment{numquotation} {\quotation\numquotelist}{\endquotation}
+\newenvironment{numquote*} {\quote\numquotelist*}{\endquote}
+\newenvironment{numquotation*}{\quotation\numquotelist*}{\endquotation}
+
+%
+% \subsection{%
+% Frame around a paragraph
+% \unskip}
+%
+% The ~{bframe}~ environment draws a frame around
+% some text, across page breaks, if necessary.
+%
+% This works only for plain text paragraphs,
+% without special height lines. All lines must be
+% ~\baselineskip~ apart, no display math.
+
+\newenvironment{bframe}
+ {\par
+ \@tempdima\textwidth
+ \advance\@tempdima 2\bframesep
+ \setbox\bframebox\hb@xt@\textwidth{%
+ \hskip-\bframesep
+ \vrule\@width\bframerule\@height\baselineskip\@depth\bframesep
+ \advance\@tempdima-2\bframerule
+ \hskip\@tempdima
+ \vrule\@width\bframerule\@height\baselineskip\@depth\bframesep
+ \hskip-\bframesep
+ }%
+ \hbox{\hskip-\bframesep
+ \vrule\@width\@tempdima\@height\bframerule\@depth\z@}%
+ \nointerlineskip
+ \copy\bframebox
+ \nobreak
+ \kern-\baselineskip
+ \runninglinenumbers
+ \def\makeLineNumber{\copy\bframebox\hss}%
+ }
+ {\par
+ \kern-\prevdepth
+ \kern\bframesep
+ \nointerlineskip
+ \@tempdima\textwidth
+ \advance\@tempdima 2\bframesep
+ \hbox{\hskip-\bframesep
+ \vrule\@width\@tempdima\@height\bframerule\@depth\z@}%
+ }
+
+\newdimen\bframerule
+\bframerule=\fboxrule
+
+\newdimen\bframesep
+\bframesep=\fboxsep
+
+\newbox\bframebox
+
+%
+%
+% \section{%
+% Move \scs{vadjust} items (New v4.00)
+% \unskip}\label{s:MVadj}
+%
+% This section completes reviving ~\pagebreak~, ~\nopagebreak~,
+% ~\vspace~, and the star and optional form of ~\\~. This was
+% started in section_\ref{ss:output} and resumed in
+% section_\ref{ss:MLN} and subsection_\ref{ss:CtrlLN}.
+% The problem was explained in section_\ref{ss:output}:
+% ~\vadjust~ items come out at a bad position, and the
+% \LaTeX\ commands named before work with ~\vadjust~ indeed.
+% Our solution was sketched there as well.
+%
+% According to the caveat in subsection_\ref{ss:CtrlLN} concerning
+% ~\ifLineNumbers~, the \LaTeX\ commands enumerated may go
+% wrong if you switch line numbering inside or at the end of
+% a paragraph.
+%% %% TODO v4.3+
+%
+% \subsection{%
+% Redefining \scs{vadjust}
+% \unskip}\label{ss:PVadj}
+%
+% ~\vadjust~ will temporarily be changed into the following
+% command.
+
+\def\PostponeVadjust#1{%
+ \global\let\vadjust\@LN@@vadjust
+%%
+% This undoes a ~\global\let\vadjust\PostponeVadjust~ which will
+% start each of the refined \LaTeX\ commands. The ~\global~s
+% are most probably superfluous. They might be useful should one
+% ~\vadjust~ appear in a group starting after the change of
+% ~\vadjust~ into ~\PostponeVadjust~.
+% (UL) Even the undoing may be superfluous, cf._discussion
+% in section_\ref{ss:ReDef} below. (UL)
+%%
+ \vadjust{\penalty-\@Mppvacodepen}%
+ \g@addto@macro\@LN@vadjustlist{#1\@lt}%
+}
+\let\@LN@@vadjust\vadjust
+\global\let\@LN@vadjustlist\@empty
+\global\let\@LN@do@vadjusts\relax
+
+% These ~\global~s are just to remind that
+% all the changes of the strings after ~\let~ should be
+% ~\global~ (\TeX book p._301). ~\@LN@vadjustlist~ collects
+% the ~\vadjust~ items of a paragraph. ~\PassVadjustList~
+% tears one ~\vadjust~ item for the current line out of
+% ~\@LN@vadjustlist~ and puts it into ~\@LN@do@vadjusts~.
+% The latter is encountered each line in ~\MakeLineNo~
+% (section_\ref{ss:MLN}), while those \LaTeX\ ~\vadjust~
+% commands will come rather rarely. So I decided that
+% ~\@LN@do@vadjust~ is ~\relax~ until a ~\vadjust~ item
+% is waiting. In the latter case, ~\@LN@do@vadjusts~
+% is turned into a list macro which resets itself to
+% ~\relax~ when the other contents have been placed in
+% the vertical list.---~\PassVadjustList~ is invoked by
+% the output routine (section_\ref{ss:output}), so the
+% ~\box255~ must be put back.
+
+\def\PassVadjustList{%
+ \unvbox\@cclv
+ \expandafter \@LN@xnext \@LN@vadjustlist \@@
+ \@tempa \@LN@vadjustlist
+ \ifx\@LN@do@vadjusts\relax
+ \gdef\@LN@do@vadjusts{\global\let\@LN@do@vadjusts\relax}%
+ \fi
+ \expandafter \g@addto@macro \expandafter \@LN@do@vadjusts
+ \expandafter {\@tempa}%
+}
+
+%
+% \subsection{%
+% Redefining the \LaTeX\ commands
+% \unskip}\label{ss:ReDef}
+%
+% Now we change ~\pagebreak~ etc.\
+% so that they use ~\PostponeVadjust~ in place of ~\vadjust~.
+% We try to do this as independently as possible of the
+% implementation of the \LaTeX\ commands to be redefined.
+% Therefore, we don't just copy macro definition code from any
+% single implementation (say, latest \LaTeX) and insert our
+% changes, but attach a conditional
+% ~\global\let\vadjust\PostponeVadjust~
+% to their left ends in a way which should work rather
+% independantly of their actual code.
+% However, ~\vadjust~ should be the primitive again after
+% execution of the command. So the ~\global\let...~ may be used
+% only if it's guaranteed that a ~\vadjust~ is near.---(UL)
+% Sure? In line numbering mode, probably each ~\vadjust~
+% coming from a \LaTeX\ command should be ~\PostponeVadjust~.
+% ~\marginpar~s and floats seem to be the only cases which
+% are not explicitly dealt with in the present section.
+% This would be a way to avoid ~\my@nobreaktrue~!
+% Of course, the ~\vadjust~s that the present package uses
+% then must be replaced by ~\@LN@@vadjust~.---Maybe
+% next time. (/UL)
+%% %% TODO v4.3+
+%
+% The next command and something else will be added to the
+% \LaTeX\ commands we are concerned with here.
+
+\DeclareRobustCommand\@LN@changevadjust{%
+ \ifvmode\else\ifinner\else
+ \global\let\vadjust\PostponeVadjust
+ \fi\fi
+}
+
+% (UL) What about math mode? Math display? Warn? (/UL)
+%% %% TODO v4.3+
+%
+% ~\@tempa~ will now become a two place macro which adds first
+% argument (single token), enclosed by ~\ifLineNumbers~\,\dots
+% ~\fi~ to the left of second argument. As long as we need it,
+% we can't use the star form of ~\DeclareRobustCommand~ or
+% the like, because AMS-\LaTeX\ uses ~\@tempa~ for ~\@ifstar~.
+
+\def\@tempa#1#2{%
+ \expandafter \def \expandafter#2\expandafter{\expandafter
+ \ifLineNumbers\expandafter#1\expandafter\fi#2}%
+}
+
+% (UL) This ~\ifLineNumber~ can be fooled by
+% ~\linenumbers~ ahead etc. It might be better to place
+% a signal penalty in any case and let the output routine
+% decide what to do.
+%%
+%% And when this has been done, remove warnings about this.
+% (/UL)
+%
+% We use the occasion to switch off linenumbers where they
+% don't work anyway and where we don't want them,
+% especially in footnotes:
+
+\@tempa\nolinenumbers\@arrayparboxrestore
+
+% We hope this suffices $\dots$ let's check one thing
+% at least:
+
+\CheckCommand*\@parboxrestore{\@arrayparboxrestore\let\\\@normalcr}
+
+% Now for the main theme of the section.
+% The next lines assume that ~\vspace~, ~\pagebreak~, and
+% ~\nopagebreak~ use ~\vadjust~ whenever they occur outside
+% vertical mode; moreover, that they don't directly read
+% an argument. Indeed ~\pagebreak~ and ~\nopagebreak~ first
+% call something which tests for a left bracket ahead,
+% while ~\vspace~ first tests for a star.
+
+\@tempa\@LN@changevadjust\vspace
+\@tempa\@LN@changevadjust\pagebreak
+\@tempa\@LN@changevadjust\nopagebreak
+
+% ~\\~, however, uses ~\vadjust~ only in star or optional form.
+% We relax independency of implementation in assuming
+% that ~\@normalcr~ is the fragile version of ~\\~
+% (and we use ~\@ifstar~!).
+%%
+%% \@ifstar reimplemented 1995/10/16, but seems to be much older.
+%% TODO v4.3+:
+%% \def\@LN@cr{%
+%% \@ifnextchar*{\@LN@changevadjust\@normalcr}%
+%% {\@ifnextchar[{\@LN@changevadjust\@normalcr}\@normalcr}%
+%% }
+%% ---same number of tokens, expansion step less.
+%%
+% (Using a copy of ~\\~ would be safer, but an ugly repetition
+% of ~\protect~.)
+%% %% TODO v4.3+
+
+\DeclareRobustCommand\\{%
+ \ifLineNumbers
+ \expandafter \@LN@cr
+ \else
+ \expandafter \@normalcr
+ \fi
+}
+\def\@LN@cr{%
+ \@ifstar{\@LN@changevadjust\@normalcr*}%
+ {\@ifnextchar[{\@LN@changevadjust\@normalcr}\@normalcr}%
+}
+
+% Moreover we hope that ~\newline~ never leads to a ~\vadjust~,
+% although names of some commands invoked by ~\\~ contain
+% ~newline~. At last, this seems to have been OK since 1989 or
+% even earlier.
+%
+% \modulolinenumbers[1]
+% \firstlinenumber{0}
+% Let's have a few tests.\vspace*{.5\baselineskip}
+% Testing ~\pagebreak~ and ~\nopagebreak~ would be too expensive
+% here, but---oops!---we have just experienced a successful
+% ~\vspace*{.5\baselineskip}~. A
+% ~\\*[.5\baselineskip]~\\*[.5\baselineskip] may look even more
+% drastical, but this time we are happy about it. Note that the
+% line numbers have moved with the lines. Without our changes,
+% one line number\vadjust{\kern.5\baselineskip} would have
+% ``anticipated'' the move of the next line, just as you can
+% observe it now.
+% (/New v4.00)
+%
+% \switchlinenumbers
+%
+% \subsection{%
+% Reminder on obsoleteness
+% \unskip}
+%
+% (New v4.1) We have completed inclusion of the earlier
+% extension packages ~linenox0.sty~, ~linenox1.sty~, and
+% ~lnopatch.sty~. If one of them is loaded, though,
+% we produce an error message before something weird happens.
+% We avoid ~\newif~ because the switchings occur so rarely.
+
+\AtBeginDocument{%
+ \let\if@LN@obsolete\iffalse
+ \@ifpackageloaded{linenox0}{\let\if@LN@obsolete\iftrue}\relax
+ \@ifpackageloaded{linenox1}{\let\if@LN@obsolete\iftrue}\relax
+ \@ifpackageloaded{lnopatch}{\let\if@LN@obsolete\iftrue}\relax
+ \if@LN@obsolete
+ \PackageError{lineno}{Obsolete extension package(s)}{%
+ With lineno.sty version 4.00 or later,\MessageBreak
+ linenox0/linenox1/lnopatch.sty must no longer be loaded.}%
+ \fi
+}
+
+%
+% \modulolinenumbers[1]
+% \section{%
+% The final touch
+% \unskip}
+%
+% There is one deadcycle for each line number.
+
+\advance\maxdeadcycles 100
+
+\endinput
+
+%
+% \section{%
+% The user commands
+% \unskip}\label{s:UserCmds}
+%
+% The user commands to turn on and off line numbering
+% are
+% \begin{description}\item
+% [|\linenumbers] \ \par
+% Turn on line numbering in the current mode.
+%
+% \item
+% [|\linenumbers*] \ \par$\qquad$
+% and reset the line number to 1.
+% \def\NL{<number>]}\item
+%% %% Boldface italic occurs here, which is evil. (UL)
+% [|\linenumbers[\NL] \ \par$\qquad$
+% and start with <number>.
+% \item
+% [|\nolinenumbers] \ \par
+% Turn off line numbering.
+% \item
+% [|\runninglinenumbers*[\NL] \ \par
+% Turn on ~running~ line numbers, with the same optional
+% arguments as ~\linenumbers~. The numbers are running
+% through the text over pagebreaks. When you turn
+% numbering off and on again, the numbers will continue,
+% except, of cause, if you ask to reset or preset the
+% counter.
+% \item
+% [|\pagewiselinenumbers] \ \par
+% Turn on ~pagewise~ line numbers. The lines on each
+% page are numbered beginning with one at the first
+% ~pagewise~ numbered line.
+% \item
+% [|\resetlinenumber[\NL] \ \par
+% Reset ~[~Set~]~ the line number to 1
+% ~[~<number>~]~.
+% \item
+% [|\setrunninglinenumbers] \ \par
+% Switch to ~running~ line number mode. Do \emph{not}
+% turn it on or off.
+% \item
+% [|\setpagewiselinenumbers] \ \par
+% Switch to ~pagewise~ line number mode. Do \emph{not}
+% turn it on or off.
+% \item
+% [|\switchlinenumbers*] \ \par
+% Causes margin switching in pagewise modes. With the
+% star, put the line numbers on the inner margin.
+% \item
+% [|\leftlinenumbers*] \ \par
+% \item
+% [|\rightlinenumbers*] \ \par
+% Set the line numbers in the left/right margin. With the
+% star this works for both modes of operation, without
+% the star only for the currently selected mode.
+% \item
+% [|\runningpagewiselinenumbers] \ \par
+% When using the pagewise line number mode, do not
+% subtract the page offset. This results in running
+% line numbers again, but with the possibility to switch
+% margins. Be careful when doing line number
+% referencing, this mode status must be the same while
+% setting the paragraph and during references.
+% \item
+% [|\realpagewiselinenumbers] \ \par
+% Reverses the effect of ~\runningpagewiselinenumbers~.
+% \item
+% [|\modulolinenumbers[\NL] \ \par
+% Give a number only to lines which are multiples of
+% ~[~<number>~]~. If <number> is not specified, the
+% current value in the counter ~linenumbermodulo~ is
+% retained. <number>=1 turns this off without changing
+% ~linenumbermodulo~. The counter is initialized to 5.
+%%
+%% %% TODO v4.3+: `counter', he says. Cf._above.
+%%
+%% (New v4.31)
+% \item
+% [|\modulolinenumbers*[\NL] \ \par
+% Like ~\modulolinenumbers~, the only difference being
+% that the first line number after a ~\linenumbers~
+% (or ~\runninglinenumbers~, ~\pagewiselinenumbers~,
+% ~\quotelinenumbers~) is printed regardless of the
+% modulo---yet `1' is printed only after (or \dots)
+% ~\firstlinenumber{1}~.
+% This also applies to the first line of a
+% ~{linenumbers}~ or respective environment.
+% See subsection_\ref{ss:Mod} for another explanation.
+% The behaviour may be unsatisfactory with pagewise
+% line-numbering.
+%% (/New v4.31)
+%% (New v4.00)
+% \item
+% [|\firstlinenumber] \ \par
+% ~\firstlinenumber{~<filino>~}~ brings about that
+% (after it) line numbers less than <filino> do
+% \emph{not} appear in the margin. Moreover, with
+% ~\modulolinenumbers[~<number>~]~, just the line
+% numbers which are <filino> plus a multiple of
+% <number> are printed.---If you had
+% ~\firstlinenumber{~<pos>~}~ with some $\mbox{<pos>}>0$
+% and want to switch to printing multiples of, e.g.,
+% 4, you best do ~\modulolinenumbers[4]~ and
+% ~\firstlinenumber{0}~. (See subsection_\ref{ss:Mod}
+% for technical details.)
+%% (/New v4.00)
+% \item
+% [|\linenumberdisplaymath] \ \par
+% Number the lines of a display math in a ~{linenomath}~
+% environment, but do not in a ~{linenomath*}~
+% environment. This is used by the package option
+% ~[mathlines]~.
+% \item
+% [|\nolinenumberdisplaymath] \ \par
+% Do not Number the lines of a display math in a
+% ~{linenomath}~ environment, but do in a
+% ~{linenomath*}~ environment. This is the default.
+% \item
+% [|\linelabel] \ \par
+% Set a ~\linelabel{~<foo>~}~ to the line number where
+% this commands is in. Refer to it with the \LaTeX\
+% referencing commands ~\ref{~<foo>~}~ and
+% ~\pageref{~<foo>~}~.
+% \end{description}
+% The commands can be used globally, locally within groups
+% or as environments. It is important to know that they
+%%
+%% %% TODO: \linelabel? others?
+%%
+% take action only when the ~\par~ is executed. The
+%%
+%% %% TODO: sure? ~\modulo...~, e.g.? well, in a sense ...
+%%
+% ~\end{~<mode>~linenumbers}~ commands provide a ~\par~.
+% Examples:
+% \begin{verse}
+% ~{\linenumbers~ <text> ~\par}~ \\
+% \ \\
+% ~\begin{linenumbers}~ \\
+% <text> \\
+% ~\end{linenumbers}~ \\
+% \ \\
+% <paragraph> ~{\linenumbers\par}~ \\
+% \ \\
+% ~\linenumbers~ \\
+% <text> ~\par~ \\
+% ~\nolinenumbers~ \\
+% \ \\
+% ~\linenumbers~ \\
+% <paragraph> ~{\nolinenumbers\par}~ \\
+% \end{verse}
+% (New v4.00)
+% However, the examples containing <paragraph> show what you
+% should \emph{not} do, at least if you use ~\pagebreak~,
+% ~\nopagebreak~, ~\vspace~, ~\\*~ or
+% ~\\[~<space>~]~---cf._section_\ref{s:MVadj}.
+%
+% The same care should be applied to the ``wizard'' devices
+% ~\ifLineNumbers~ (subsection_\ref{ss:CtrlLN}) and
+% ~\PostponeVadjust~ (section_\ref{ss:PVadj}).
+% (/New v4.00)
+%
+% (New v4.11) Oh, and the commands and environments of
+% section_{s:Xt} are missing. Sorry, I am in a hurry now.
+% May be next time.% %% TODO v4.3+
+% ---And the environments ~{linenomath}~ and ~{linenomath*}~should
+% get an own paragraph. In short, each math display, equation,
+% or ~{eqnarray}~ should be ``wrapped'' in one of ~{linenomath}~
+% and ~{linenomath*}~.
+%
+% \subsection{%
+% Customization hooks
+% \unskip}
+%
+% There are several hooks to customize the appearance of the
+% line numbers, and some low level hooks for special
+% effects.
+% \begin{description}\item
+% [|\thelinenumber] \ \par
+% This macro should give the representation of the line
+% number in the \LaTeX-counter ~linenumber~. The
+% default is provided by \LaTeX: \par$\qquad$
+% ~\arabic{linenumber}~
+% \item
+% [|\makeLineNumberLeft] \ \par
+% This macro is used to attach a line number to the left
+% of the text page. This macro should fill an ~\hbox to 0pt~
+% which will be placed at the left margin of the
+% page, with the reference point aligned to the line to
+% which it should give a number. Please use the macro
+% ~\LineNumber~ to refer to the line number.
+%
+% The default definition is \par$\qquad$
+% ~\hss\linenumberfont\LineNumber\hskip\linenumbersep~
+% \item
+% [|\makeLineNumberRight] \ \par
+% Like ~\makeLineNumberLeft~, but for line numbers on
+% the right margin.
+%
+% The default definition is \par$\qquad$
+% ~\linenumberfont\hskip\linenumbersep\hskip\textwidth~ \par$\qquad$
+% ~\hbox to\linenumberwidth{\hss\LineNumber}\hss~
+% \item
+% [|\linenumberfont] \ \par
+% This macro is initialized to \par$\qquad$
+% ~\normalfont\tiny\sffamily~
+% \item
+% [|\linenumbersep] \ \par
+% This dimension register sets the separation of the
+% linenumber to the text. Default value is ~10pt~.
+% \item
+% [|\linenumberwidth] \ \par
+% This dimension register sets the width of the line
+% number box on the right margin. The distance of the
+% right edge of the text to the right edge of the line
+% number is ~\linenumbersep~ + ~\linenumberwidth~. The
+% default value is ~10pt~.
+% \item
+% [|\theLineNumber] (for wizards) \ \par
+% This macro is called for printing a ~\newlabel~ entry
+% to the aux-file. Its definition depends on the mode.
+% For running line numbers it's just ~\thelinenumber~,
+% while in pagewise mode, the page offset subtraction
+% is done in here.
+% \item
+% [|\makeLineNumber] (for wizards) \ \par
+% This macro produces the line numbers. The definition
+% depends on the mode. In the running line numbers
+% mode it just expands ~\makeLineNumberLeft~.
+% \item
+% [|\LineNumber] (for wizards) \ \par
+% This macro is called by ~\makeLineNumber~ to typeset
+% the line number. This hook is changed by the modulo
+% mechanism
+%% %%%.
+% and by ~\firstlinenumber~.
+%% %% New v4.00
+% \end{description}
+%%
+%% TODO: \stepLineNumber---another wizard command!?
+%% Not sure, may be retreated.
+% \end{document}%D
+------------------------------------------------------------------------------
+ %SSTOPP
+%% TODO v4.3+: Check for unwanted comment marks in new comments
+%% (resulting from manual aligning): search `New v4.2'
+%% and/or ` % '!
+%% TODO v4.3+: Check for missing comment marks where a paragraph
+%% should end/start. Also to prevent empty "code" lines.
+%% Especially, new comments at section ends must be
+%% followed by comment mark lines.
+%% And prevent ~\par~s from blank lines in definitions!
+%% See `visual space' above.
+%% For proper appearance in lineno.tex, note that a comment
+%% in a final code line changes behaviour.
+%% TODO v4.3+: Require README for redistribution?
+%% TODO v4.3+: Since discussions of code have increased so much, it
+%% would be appropriate not to give to this file
+%% extension `.sty' (e.g., `dty'!??). ?? Is quickly read though!
+%% A .sty extraction may be possible even if the present
+%% file is neither a .doc nor a .dtx. (!???)
+%% Use awk line below (etc.) for .doc at least; + .ins or so.
+%% ^ must not be caps! To escape awk.
+%% TODO v4.3+: Underfull lines!? (due to long code quotations)
+%% TODO v4.3+: Sometimes paragraph indents may be appropriate.
+%% TODO Swap first line (`\iffalse...') with corresponding below.
+ Or do *not* swap, maybe nawk is more reliable.
+%% TODO v4.3+: Ponder Stephan's mail from 2004/09/02.
+%% TODO v4.3+:
+%% use \@ET@makeLineNumber.
+%% plus almost all `(UL)'
+%% plus lots of bad boxes messages
+%% change v4.3 TODOs when postponed
+%% remove {old} environments.
+
+------------------------------------------------------------------------------
+
+# awk command lines for v4.00, mixed with former ones:
+
+echo "Don't bother about unknown 'iffalse'." # SHELL1
+nawk '/A[W]K/' lineno.sty | nawk -f - lineno.sty >lineno.tex; # SHELL1
+latex lineno; latex lineno; latex lineno; latex lineno; # SHELL1
+
+BEGIN{DOC=-1; # AWK DOC A W K
+ BEGINCODE = "\\begin{code}\\begin{verbatim}"; # AWK
+ ENDCODE = "\\end{verbatim}\n\\end{code}"; } # AWK
+ BEGINCODE = "% \\begin{macrocode}"; # DOC A W K
+ ENDCODE = "% \\end{macrocode}"; } # DOC A W K
+/^[ \t]*$/ { ECNT++; next; } # AWK DOC A W K
+/\\documentclass/{ sub("article","ltxdoc") } # DOC A W K
+/%D$/ { sub("^%* *",""); sub("%D$",""); # DOC A W K
+ print > "lineno.drv"; next } # DOC A W K
+/^%%/ { next; } # AWK DOC A W K
+/^%/ { if (!DOC) { print ENDCODE; } # AWK DOC A W K
+ DOC=1; ECNT=0; # AWK DOC A W K
+ sub("^% *",""); # AWK
+ sub("^% *","% "); # DOC A W K
+ print; next; } # AWK DOC A W K
+/%VERSION/ { sub("%VERSION",""); print; next; } # AWK
+/%SSTOPP/ { exit } # AWK
+DOC<0 { next } # AWK DOC A W K
+/^-+-$/ { if (!DOC) print ENDCODE; exit } # AWK DOC A W K
+{ if (DOC) { ECNT=DOC=0; print BEGINCODE; } # AWK DOC A W K
+ while (ECNT>0) { print " "; ECNT--; } # AWK DOC A W K
+ print $0; } # AWK DOC A W K
+
+# New v4.00, UL: know nothing about awk; found present solution
+# in hours of trial and error.
+
+% Earlier (should be inhibited by %SSTOPP above and otherwise):
+echo "expect errors for unknown commands 'iffalse' and 'fi'";# SHELL0 SHELL#1
+awk '/A[W]K/' lineno.sty | awk -f - lineno.sty >lineno.tex; # SHELL0
+latex lineno; latex lineno; latex lineno; latex lineno; # SHELL0
+nawk '/A[W]K/' lineno4.sty | nawk -f - lineno4.sty >lineno4.tex; # SHELL#1
+latex lineno4; latex lineno4; latex lineno4; latex lineno4; # SHELL#1
+
+awk '/DOC A [W] K/' lineno.sty | awk -f - lineno.sty >lineno.doc; # DOC SH
+
+BEGIN{DOC=-1; # A#WK DOC A W K
+ BEGINCODE = "\\begin{code}\\begin{verbatim}"; # A#WK
+ ENDCODE = "\\end{verbatim}\n\\end{code}"; } # A#WK
+ BEGINCODE = "% \\begin{macrocode}"; # DOC A W K
+ ENDCODE = "% \\end{macrocode}"; } # DOC A W K
+/^[ \t]*$/ { ECNT++; next; } # A#WK DOC A W K
+/\\documentclass/{ sub("article","ltxdoc") } # DOC A W K
+/%D$/ { sub("^%* *",""); sub("%D$",""); # DOC A W K
+ print > "lineno.drv"; next } # DOC A W K
+/^%%/ { next; } # A#WK DOC A W K
+/^%/ { if (!DOC) { print ENDCODE; } # A#WK DOC A W K
+ DOC=1; ECNT=0; # A#WK DOC A W K
+ sub("^% *",""); # A#WK
+ sub("^% *","% "); # DOC A W K
+ print; next; } # A#WK DOC A W K
+DOC<0 { next } # A#WK DOC A W K
+/^-+-$/ { if (!DOC) print ENDCODE; exit } # A#WK DOC A W K
+{ if (DOC) { ECNT=DOC=0; print BEGINCODE; } # A#WK DOC A W K
+ while (ECNT>0) { print " "; ECNT--; } # A#WK DOC A W K
+ print $0; } # A#WK DOC A W K
+
+
+------------------------------------------------------------------------------
+
+If you are looking here because of the two top lines of the file:
+
+A .tex documentation of this macro file can be obtained by
+
+ sh lineno.sty
+
+under UNIX.--You may find this hint little helpful. One
+reason may be that the awk versions to which you have access
+don't work suitably. Another reason may be that you don't have
+access to UNIX (in some sense). However, a .tex, .dvi, or .pdf
+version of such a documentation should be available from CTAN,
+in the same folder as the present file. When we typed this, that
+folder was /macros/latex/contrib/lineno. If this has changed in
+the meantime, a CTAN search should lead you to a folder
+containing such a documentation. Or you may get help from one of
+the e-mail addresses above.
+
+
diff --git a/Master/texmf-dist/tex/latex/lineno/vplref.sty b/Master/texmf-dist/tex/latex/lineno/vplref.sty
new file mode 100644
index 00000000000..51dd815bd48
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/lineno/vplref.sty
@@ -0,0 +1,72 @@
+%% `vplref.sty'
+%% -- extended line number referencing with lineno.sty.
+
+\def\filedate{2005/04/25} \def\fileversion{0.2}
+
+%% Copyright (C) 2004, 2005 Uwe Lueck,
+%% http://contact-ednotes.sty.de.vu --author-maintained
+%% -- support of lineno.sty for varioref.sty.
+
+%% This file can be redistributed and/or modified under
+%% the terms of the LaTeX Project Public License; either
+%% version 1.3 of the License, or any later version.
+%% The latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% We did our best to help you, but there is NO WARRANTY.
+
+%% USAGE:
+%
+% \vpagelineref{<label>} expands to
+%
+% a) \ref{<label>}
+% -- if on same page as \linelabel{<label>}
+%
+% b) \LineWithPage{<label>} -- otherwise.
+%
+% \LineWithPage{<label>} expands -- by default -- to
+%
+% \pageref{<label>}.\ref{<label>}
+%
+% This can be customized by editing
+%
+% \renewcommand*{\LineWithPage}[1]{\pageref{#1}.\ref{#1}}
+%
+% in your document preamble, after vplref.sty has been loaded
+% (which may have happened through lineno.sty with option
+% `addpageno').
+
+%% IMPLEMENTATION:
+
+\NeedsTeXFormat{LaTeX2e}[1994/12/01] %% \Declare...*
+\ProvidesPackage{vplref}[\filedate\space v\fileversion]
+
+\AtBeginDocument{\RequirePackage{lineno,varioref}}
+
+%% Anderer Ansatz: GPNo (\FirstOnPage)
+
+\DeclareRobustCommand*\vpagelineref[1]{{%
+% \def\reftextcurrent{\lineref{#1}}%% First vpageref arg.
+ \let\reftextfaraway\LineWithPage
+ \def\reftextafter{\reftextfaraway{#1}}%
+ \let\reftextbefore\reftextafter
+ \let\reftextfaceafter\reftextafter
+ \let\reftextfacebefore\reftextafter
+%% <- Looks somewhat stupid, but varioref.sty has its merits
+%% as compared with the mechanism in ednotes.sty.
+ \vpageref[\ref{#1}][]{#1}%% The robust alternative.
+%% Here and with \LineWithPage, \lineref seems more appropriate
+%% than \ref, but it produces errors when labels have not been
+%% defined. This seems to be an incompatibility with lineno.sty.
+}}
+
+%% Customizable format for different page:
+\newcommand*\LineWithPage[1]{\pageref{#1}.\ref{#1}}
+
+\endinput
+
+VERSION HISTORY:
+v0.1 2004/10/19 First, sent to Sergei Mariev.
+v0.11 2004/10/19 Fit to recent varioref version;
+ sent to Sergei.
+v0.2 2005/04/25 \Require... \AtBeginDocument.
+
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