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diff --git a/Master/texmf-dist/tex/latex/examplep/examplep.sty b/Master/texmf-dist/tex/latex/examplep/examplep.sty new file mode 100644 index 00000000000..9d496ce2a83 --- /dev/null +++ b/Master/texmf-dist/tex/latex/examplep/examplep.sty @@ -0,0 +1,2898 @@ +% +% examplep.sty -- typesetting verbatim TeX code and examples +% by pts@fazekas.hu at Sat Sep 27 23:58:14 CEST 2003 +% -- Sun Sep 28 23:38:37 CEST 2003 +% ligatures broken -- Tue Sep 30 19:14:11 CEST 2003 +% examplep.sty at Fri Oct 24 10:25:27 CEST 2003 +% options and misc stuff at Fri Oct 24 22:23:06 CEST 2003 +% xalign=, yalign= fixes, *-test.tex at Wed Dec 24 02:33:24 CET 2003 +% baseline-grid=, fixes at Wed Feb 25 23:37:41 CET 2004 +% +% This program is free software; you can redistribute it and/or modify +% it under the terms of the GNU General Public License as published by +% the Free Software Foundation; either version 2 of the License, or +% (at your option) any later version. +% +% This program is distributed in the hope that it will be useful, +% but WITHOUT ANY WARRANTY; without even the implied warranty of +% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +% GNU General Public License for more details. +% +% This is a LaTeX package that provides following features: +% +% -- a robust \PVerb macro comparable to the LaTeX \verb macro +% -- \begin{PSource} comparable to the LaTeX \begin{verbatim} environment +% -- \begin{WSource} comparable to \begin{verbwrite} in sverb.sty +% and \begin{filecontents} of latex.ltx +% -- \begin{PWSource} combining \begin{PSource} and \begin{WSource} +% -- \begin{PexaMiniPage} comparable to the LaTeX \begin{minipage} environment +% -- \PexaShowBoth that typesets LaTeX code, and also shows it verbatim; +% facing and page breaks enabled (!) +% -- package load options can be specified \usepacakge[...]{examplep} +% See samplewidth= in this file for the load option defaults. Use +% \PexaDefaults{...} instead of \usepackage[...]{examplep} to specify +% complicated options such as linenumberformat={...} (this is a LaTeX kernel +% limitation.) +% -- some more, see eurotex_2005_examplep.tex +% +% !! func-tion better hyphenation point in \Q than functi-on +% !! after \end{PSource} in pts_diploma.tex, don't require \noindent +% !! option to emit tabs as spaces +% !! allow wider Source if Sample is small enough +% !! \ifnum0=`{\fi} and similar tricks for \halign? +% !! why is it called twice? +% \def\pexa@cverb@@verbatimfont{u\normalfont\ttfamily +% \hyphenpenalty10000 } +% !! why doesn't \selectlanguage works inside \begin{PSource}[srcstyle=leftboth] +% !! \PVerb{foo} mustn't insert $\lnot$ if foo is at EOL +% !! \ifvmode testing for \PSource +% !! \PVerb{...} inner unnested braces (\futurelet?) +% !! \penalty in \PVerb +% !! \pexa@ss@left etc. should work with \PexaShowBoth (not for measuring) +% !! \@afterindenttrue etc. +% !! ASCII tab (9) characters aren't supported properly +% !! \begin{PSource} says 'Missing $ inserted.' in magyarldf-doc.tex: +% \begin{PSource}[srcstyle=leftboth] +% \grq~\glq~\glqq~\grqq~\flq~\frq~\flqq~\frqq\\ +% \textquoteright~\textquotedblright\\ +% \textquoteleft~\textquotedblleft\\ +% \end{PSource} +% !! yalign=u \includegraphics too high, line break after 1st Source line, +% will make it it higher on the previous page (same problem sometimes +% with yalign=v) +% !! \texttt{÷#÷} ! Illegal parameter number in definition of \reserved@a. +% !! report Overfull \hbox for \begin{PSource}[srcstyle=leftnumcol,firstlinenum=8] +% Imp: \PVerb with listings +% Imp: make # work in srcstyle=leftboth (and srcstyle=leftleft?) +% Dat: multiple spaces count inside \PVerb+...+, even at line break +% Dat: it is impossible to indent the first line via \begin{WSource} etc. +% without [OPTIONS], because verbfwr.sty chops heading spaces +% Dat: 5000..9999 lines of \halign containing only `(9999)\hfil\cr' will fill +% up TeX's memory (! TeX capacity exceeded, sorry [main memory size=263001].), +% so text fed to \PexaShowBoth shouldn't exceed 375 lines (with an +% average line length of 80 characters) Dat: numbers outdated, see +% eurotex_2005_examplep.tex +% Imp: page breaks near \FBHLastDepth put a too tall \vrule on next page +% Dat: accented letters in listings.sty Source of \PexaShowBoth do not work: +% \begin{WBoth} +% "á" +% \end{WBoth} +% \PexaShowBoth{listings={language=c},srcstyle=leftnumcol} +% prints "^^e1" to the source field +% The same problem with \PexaShowBoth +% Imp: make \TeX parse ^^, use \meaning later +% OK : magyarldf-doc.tex infinite bug, corrected +% + +\NeedsTeXFormat{LaTeX2e} +\ProvidesPackage{examplep}[2003/10/23 v0.02 Verbatim and typeset TeX code] + +\edef\pexa@@restorecat{% + \catcode\string`\string`\the\catcode\string``\space\space + \catcode\string`\string$\the\catcode\string`$\space\space} +\catcode\string``12 % may have been changed by Babel +\catcode`$3 +\RequirePackage{verbfwr} + +% --- + +\def\pexa@@samplename{pexa-sam.tex} +\def\pexa@@sourcename{pexa-src.tex} +\let\pexa@@cursourcename\pexa@@samplename + +\def\pexa@dohex#1{% + \if\noexpand#1^% + \expandafter\pexa@dohex@lowa + \else\char"5E \expandafter#1\fi +} + +\def\pexa@swaprelax#1#2\relax{#2#1} +%\def\pexa@swap#1#2{#2#1}% SUXX, doesn't evaluate \else correctly + + +%** Dat: would be too late for ^^#1#2 +%** Dat: doesn't restore ^^09, because \write emits ^^I instead of ^^09 +\def\pexa@dohex@lowa#1{% + \if\noexpand#18\pexa@swaprelax{\pexa@dohex@lowc 8}% + \else\if\noexpand#19\pexa@swaprelax{\pexa@dohex@lowc 9}% + \else\if\noexpand#1a\pexa@swaprelax{\pexa@dohex@lowc A}% + \else\if\noexpand#1b\pexa@swaprelax{\pexa@dohex@lowc B}% + \else\if\noexpand#1c\pexa@swaprelax{\pexa@dohex@lowc C}% + \else\if\noexpand#1d\pexa@swaprelax{\pexa@dohex@lowc D}% + \else\if\noexpand#1e\pexa@swaprelax{\pexa@dohex@lowc E}% + \else\if\noexpand#1f\pexa@swaprelax{\pexa@dohex@lowc F}% + %\else\if\noexpand#1I\pexa@swaprelax{\pexa@dohex@lowc 09}% tab: \t; Imp: better !! no #2, neither in \char "5E + \else\pexa@swaprelax{\pexa@dohex@lowd#1}% + \fi\fi\fi\fi\fi\fi\fi\fi\relax +} +\def\pexa@dohex@lowd#1{% + % Dat: ^^00 was silently dropped by \write + % Dat: ^^? is an invalid character -- never mind + \if\noexpand#1A\pexa@swaprelax{\pexa@dohex@lowc 01}% + \else\if\noexpand#1B\pexa@swaprelax{\pexa@dohex@lowc 02}% + \else\if\noexpand#1C\pexa@swaprelax{\pexa@dohex@lowc 03}% + \else\if\noexpand#1D\pexa@swaprelax{\pexa@dohex@lowc 04}% + \else\if\noexpand#1E\pexa@swaprelax{\pexa@dohex@lowc 05}% + \else\if\noexpand#1F\pexa@swaprelax{\pexa@dohex@lowc 06}% + \else\if\noexpand#1G\pexa@swaprelax{\pexa@dohex@lowc 07}% + \else\if\noexpand#1H\pexa@swaprelax{\pexa@dohex@lowc 08}% + \else\if\noexpand#1I\pexa@swaprelax{\pexa@dohex@lowc 09}% tab: \t; --- this _must_ be present here + \else\if\noexpand#1J\pexa@swaprelax{\pexa@dohex@lowc 0a}% + \else\if\noexpand#1K\pexa@swaprelax{\pexa@dohex@lowc 0b}% + \else\if\noexpand#1L\pexa@swaprelax{\pexa@dohex@lowc 0c}% + \else\if\noexpand#1M\pexa@swaprelax{\pexa@dohex@lowc 0d}% + \else\if\noexpand#1N\pexa@swaprelax{\pexa@dohex@lowc 0e}% + \else\if\noexpand#1O\pexa@swaprelax{\pexa@dohex@lowc 0f}% + \else\if\noexpand#1P\pexa@swaprelax{\pexa@dohex@lowc 10}% + \else\if\noexpand#1Q\pexa@swaprelax{\pexa@dohex@lowc 11}% + \else\if\noexpand#1R\pexa@swaprelax{\pexa@dohex@lowc 12}% + \else\if\noexpand#1S\pexa@swaprelax{\pexa@dohex@lowc 13}% + \else\if\noexpand#1T\pexa@swaprelax{\pexa@dohex@lowc 14}% + \else\if\noexpand#1U\pexa@swaprelax{\pexa@dohex@lowc 15}% + \else\if\noexpand#1V\pexa@swaprelax{\pexa@dohex@lowc 16}% + \else\if\noexpand#1W\pexa@swaprelax{\pexa@dohex@lowc 17}% + \else\if\noexpand#1X\pexa@swaprelax{\pexa@dohex@lowc 18}% + \else\if\noexpand#1Y\pexa@swaprelax{\pexa@dohex@lowc 19}% + \else\if\noexpand#1Z\pexa@swaprelax{\pexa@dohex@lowc 1a}% + \else\if\noexpand#1[\pexa@swaprelax{\pexa@dohex@lowc 1b}% + \else\if\noexpand#1\expandafter\@gobble\string\\\pexa@swaprelax{\pexa@dohex@lowc 1c}% + \else\if\noexpand#1]\pexa@swaprelax{\pexa@dohex@lowc 1d}% + \else\if\noexpand#1^\pexa@swaprelax{\pexa@dohex@lowc 1e}% + \else\if\noexpand#1_\pexa@swaprelax{\pexa@dohex@lowc 1f}% + \else\if\noexpand#1?\pexa@swaprelax{\pexa@dohex@lowc 7f}% + \else\char"5E \pexa@swaprelax{\pexa@dohex#1}% + \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi + \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\relax +} + +\def\pexa@dohex@lowb#1{% + \if\noexpand#1aA% + \else\if\noexpand#1bB% + \else\if\noexpand#1cC% + \else\if\noexpand#1dD% + \else\if\noexpand#1eE% + \else\if\noexpand#1fF% + \else#1\fi\fi\fi\fi\fi\fi +} +\def\pexa@dohex@lowc#1#2{% + \ifnum\catcode"#1\pexa@dohex@lowb#2=13{\lccode`~="#1\pexa@dohex@lowb#2\lowercase{~}}% Dat: \lowercase{\noexpand~} didn't work, the letter `á' got hidden + \else{\lccode`+="#1\pexa@dohex@lowb#2\lowercase{+}}\fi% +} + +% test at Wed Jan 5 15:57:25 CET 2005 +\begingroup \catcode"A4=13 \catcode"1C=12 +\edef~{\noexpand\noexpand\noexpand~}% +\edef\reserved@c{\expandafter\@gobble\string\\}% +\edef\reserved@a{\expandafter\pexa@dohex\string^IJ\pexa@dohex^4A\pexa@dohex^4a\pexa@dohex^a4\expandafter\pexa@dohex\expandafter^\reserved@c a} +\def\reserved@b{{\lccode`+="09\lowercase {+}}J\char "5E \char "5E 4A\char "5E \char "5E 4a{\lccode`~="A4\lowercase {~}}{\lccode`+="1C\lowercase {+}}a} +%%\show\reserved@a \show\reserved@b +\ifx\reserved@a\reserved@b\else\PackageError{examplep}{Unit test of \string\pexa@dohex\space failed}\@ehc\fi +\endgroup + +%** Usage: \begin{PWSource}[OPTIONS]...\end{PWSource}. Writes everything (...) +%** into file \pexa@@sourcename, and also typesets it with \PexaShowSource +%** Dat: everything after \end{PWSource} in its line will be ignored +%** Dat: ^^ab hex codes >=128 will be substituted in \input (by \pexa@dohex) +%** Dat: ^^I etc. hex codes will be left alone +%** Dat: spaces at EOL will be lost (this is a limitation of TeX's eyes), so +% will be contents of lines with spaces only. This limitation is true +% for all environments in this file. +%** Dat: if `[OPTIONS]' is missing, then all spaces +\def\PWSource{% + \let\pexa@@savepar\par + \catcode`\ =12 \let\par\relax \obeylines% ugly hack so \@ifnextchar won't gobble spaces or newlines + \@ifnextchar[\pexa@PWSource{\pexa@PWSource[]}}%] +\def\pexa@PWSource[#1]{% + \def\pexa@@envopts{#1}% + \global\let\pexa@@cursourcename\pexa@@sourcename + \immediate\openout\verbfwr@writefile\pexa@@cursourcename\relax + \let\verbfwr@writecs\verbfwr@writefile + \let\verbfwr@actwriteline\verbfwr@writeline + \let\par\pexa@@savepar % so we won't get an infinite loop + \verbfwr@default@acts + \verbfwr@readenv\verbfwr@write + % Don't put anything else here! +} +\def\endPWSource{% + \immediate\closeout\verbfwr@writefile + \expandafter\PexaShowSource\expandafter{\pexa@@envopts}% use defaults +} + +%** Writes its contents to file \pexa@@samplename and sets +%** \pexa@@cursourcename to \pexa@@samplename +%** Usage: \begin{WBoth}...\end{WBoth}. `...' is LaTeX source that can +%** be typeset verbatim or later \input into the middle of the document. See +%** the docs for \begin{PWSource} for more details. +\def\WBoth{% + \global\let\pexa@@cursourcename\pexa@@samplename + \immediate\openout\verbfwr@writefile\pexa@@samplename\relax + \let\verbfwr@writecs\verbfwr@writefile + \let\verbfwr@actwriteline\verbfwr@writeline + \verbfwr@default@acts + \verbfwr@readenv\verbfwr@write% finish this \cs here +} +\def\endWBoth{\immediate\closeout\verbfwr@writefile} +%** Similar to \begin{WBoth} (see docs there), but writes its contents to +%** file \pexa@@samplename. +\def\WSample{% + \immediate\openout\verbfwr@writefile\pexa@@samplename\relax + \let\verbfwr@writecs\verbfwr@writefile + \let\verbfwr@actwriteline\verbfwr@writeline + \verbfwr@default@acts + \verbfwr@readenv\verbfwr@write% finish this \cs here +} +\let\endWSample\endWBoth +%** Similar to \begin{WBoth} (see docs there), but writes its contents to +%** file \pexa@@sourcename (and sets \pexa@@cursourcename to it). +\def\WSource{% + \global\let\pexa@@cursourcename\pexa@@sourcename + \immediate\openout\verbfwr@writefile\pexa@@sourcename\relax + \let\verbfwr@writecs\verbfwr@writefile + \let\verbfwr@actwriteline\verbfwr@writeline + \verbfwr@default@acts + \verbfwr@readenv\verbfwr@write% finish this \cs here +} +\let\endWSource\endWBoth + +%** Everything is ignored between \begin{PIgnore}...\end{PIgnore}. The trailing +%** Everything in the line of \end{PIgnore} is ignored, even chars after it. +%** `...' may contain unnested braces, groups or \ifs. +\def\PIgnore{% + \verbfwr@default@acts + \let\verbfwr@actemitline\@gobble + \verbfwr@readenv\verbfwr@write% finish this \cs here +} +\let\endPIgnore\endWBoth + +%** Usage: \begin{PSource}[OPTIONS]...\end{PSource}. Same as \begin{PWSource}, +%** but doesn't write anything to a file, so it is a little faster. Also, a +%** little more stable, since ^^ab hex codes aren't involved. +\def\PSource{% + \catcode`\ =13 \let\par\@@par \obeylines% ugly hack so \@ifnextchar won't gobble spaces or newlines + \@ifnextchar[\pexa@PSource{\pexa@PSource[]}}%] +\def\endPSource{\pexa@@undoyindent} +%\def\verbfwr@readenv@ii#1\hfuzz{{\end.}{\end{#1}}}% !! +\def\pexa@PSource[#1]{% + \pexa@doopts{#1}% + \expandafter\expandafter\expandafter\pexa@plines@start + \expandafter\verbfwr@readenv@i\@currenvir\hfuzz% +}% +\def\pexa@plines@notverbatim{% + %\catcode`~=13 %\def~{\nobreakspace{}}% + \catcode`\ =10 % restore to be space, was active + \let\pexa@setupverb\relax + \let\pexa@default@verbatimfont\relax + \def\verbfwr@read##1##2##3{\verbfwr@noter@read0}% Imp: doc why? +} +\def\pexa@plines@expandeach#1{% + % !! now \pexa@@eachline may be complicated (see listings=), this early + % expansion is no point. Re-verify purpose. + \expandafter\def\expandafter\reserved@a\expandafter{% + \expandafter\relax + \pexa@@eachline{#1}\cr}% +} +%** @param #1 `\end{PSource}' in catcode 12 +%** @param #2 `\end {PSource}' with normal catcodes +\def\pexa@plines@start#1#2{% + \let\pexa@@starthalign\@empty % Dat: this is checked by \pexa@sh@leftleft and \pexa@sh@leftboth + \let\pexa@@dohalign\@empty % Imp: why so early? + %** Must be fully expandable. + \let\pexa@@eachline\@firstofone% Dat: \pexa@sh@leftboth overrides it + %%\show\pexa@default@srcstyle + \expandafter\ifx\csname pexa@ss@\pexa@default@srcstyle\endcsname\relax + \def\verbfwr@actemitlineone{% not called if there are no lines! + \let\verbfwr@actemitlineone\@empty + \pexa@starthalign% one @ + \pexa@@beforefirstline + \noalign\bgroup + }% + \def\verbfwr@actemitline##1{% get line in \VerbFwrLines + %\edef\reserved@a{\def\noexpand\VerbFwrLines{\noexpand\pexa@@eachline{\VerbFwrLines}}}% + %\expandafter\egroup\reserved@a% \noalign, pass \VerbFwrLines inside the column + %\relax\VerbFwrLines\cr%\relax<.\VerbFwrLines.>\cr% + % vvv This solution makes it possible for \pexa@@eachline to contain `&' (at top level only?? -- verify again); see also @sh@leftboth + % vvv Dat: a beginning \edef\reserved@a{\relax...} is necessary to prevent + % TeX looking for \span, \omit etc. + %\edef\reserved@a{\relax\expandafter\pexa@@eachline\expandafter{\VerbFwrLines}\cr}% + \expandafter\pexa@plines@expandeach\expandafter{\VerbFwrLines}% + \expandafter\egroup\reserved@a% \noalign, pass \VerbFwrLines inside the column + % + \noalign\bgroup + }% + \def\verbfwr@actemitdone{% called if there were no lines + \ifx\verbfwr@actemitlineone\@empty + \egroup% \noalign + \egroup% \halign + \fi + }% + \expandafter\let\expandafter\pexa@plines@@setup\csname pexa@sh@\pexa@default@srcstyle\endcsname% this sets up further \catcodes + \let\pexa@@dohalign\@empty + \def\pexa@@dopars{\PackageError{Expected \string\pexa@@dohalign\space here}\@ehc}% + \else + %\expandafter\pexa@setup@calcwidths\expandafter{\pexa@default@usewidth}% + % Dat: no need to save/restore \parindent here, becasuse we do \noindent + \def\verbfwr@actemitlineone{\let\verbfwr@actemitlineone\@empty}% + \let\verbfwr@actemitdone\@empty + \def\verbfwr@actemitline##1{\expandafter\pexa@plines@parpre\expandafter\pexa@@eachline\expandafter{\VerbFwrLines}\@@par}% + \expandafter\let\expandafter\pexa@plines@@setup\csname pexa@ss@\pexa@default@srcstyle\endcsname% this sets up further \catcodes + \everypar{}% + % Dat: too early to set \hsize now + \let\pexa@@dopars\@empty + \def\pexa@@dohalign{\PackageError{Expected \string\pexa@@dopars\space here}\@ehc}% + \fi + % + % vvv Similar to \PexaShowSourceMany + %\leavevmode% for \@bsphack + %\@bsphack% don't have to save \spacefactor + \let\par\@@par% make \vskip work fine?? + \expandafter\pexa@setup@calcwidths\expandafter{\pexa@default@usewidth}% + \begingroup + \pexa@@calcwidths% calculate leftmost \tabskip + \@tempdima\PexaWidth + \advance\@tempdima\tabskip + \edef\reserved@a{\def\noexpand\pexa@@tolinewidth{to\the\@tempdima}}% + \expandafter\endgroup\reserved@a + %\advance\linewidth\@totalleftma + %\def\pexa@@tolinewidth{to\linewidth}% + % + \pexa@xyindent\pexa@default@xindent\pexa@default@yindent + % \pexa@plines@notverbatim + \pexa@setup@listings + \pexa@plines@@setup + % ^^^ calls \pexa@s?@..., which calls \pexa@show@pars or \pexa@show@halign, + % which calls \pexa@setupverb and \pexa@@calcwidths, which modifies + % \tabskip and \linewidth + \let\pexa@@hpre\@empty{}% Dat: only meaningful for \input + \advance\leftskip -1\leftskip % keep stretch + \advance\rightskip-1\rightskip% keep stretch + %\leftskip\z@skip \rightskip\z@skip % Dat: needed by \begin{egysoros} -- why?? + %\advance\hsize\rightskip + %\showthe\hsize + %\showthe\leftskip + %\showthe\rightskip + \let\par\@@par \obeylines + \verbfwr@read{#1}\@gobble{% read verbatim data line-by-line, call \verfwr@act... as callbacks + %\@esphack + #2% + }% + % Don't put anything else here, will be read by \verbfwr@read +} +% vvv Dat: \leavevmode would insert \indent and cancels \noindent +% vvv Dat: \null is needed for empty lines with no \catcode change for ^^M +\def\pexa@plines@parpre{\pexa@@vts\noindent\null + \kern\tabskip% !! added at Tue May 18 11:14:58 CEST 2004; for \begin{PSource} in \begin{description}; does it hurt lakk?? + \pexa@@everyparr}% + +% --- Adding accents and breaking ligatures + +\edef\pexa@quoteleft {\relax\string`} +\edef\pexa@quoteright{\relax\string'} +\edef\pexa@hyphen {\relax\string-\relax}% Dat: 2nd \relax is superfluous?? even for --- +\edef\pexa@comma {\relax\string,} +\edef\pexa@less {\relax\string<} +\edef\pexa@greater {\relax\string>} +\let\pexa@@oldH\H% default +\let\pexa@@olddot\.% default +\def\pexa@@otone{OT1} +\def\pexa@H#1{% \H accent missing from {OT1}{cmtt} + \ifx\f@encoding\pexa@@otone% Imp: don't hard-wire cmr?? + \pexa@curprop\iftrue% + \pexa@@oldH#1% + \else% + \pexa@add@accentx{125}{\fontencoding{OT1}\fontfamily{cmr}\selectfont}#1% not expandable + \fi% + \else% + \pexa@@oldH#1% {T1}{cmtt} is OK + \fi% +}% +\def\pexa@dot#1{% \. accent missing from {OT1}{cmtt} + \ifx\f@encoding\pexa@@otone% + \pexa@curprop\iftrue% + \pexa@@dot#1% + \else% + \pexa@add@accentx{95}{\fontencoding{OT1}\fontfamily{cmr}\selectfont}#1% not expandable + \fi% + \else% + \pexa@@olddot#1% {T1}{cmtt} is OK + \fi% +}% +%** Derived from LaTeX \add@accent +%** @param #1 0..255 code of the accent +%** @param #2 commands to load the accent font +%** @param #3 char to put the accent on +\def\pexa@add@accentx#1#2#3{\hmode@bgroup + \let\hmode@start@before@group\@firstofone + \setbox\@tempboxa\hbox{% + #3\global\mathchardef\accent@spacefactor\spacefactor}% + \edef\@thefont{\the\font}% + #2% select font + \accent#1% + \@thefont#3% + \egroup\spacefactor\accent@spacefactor +} + +\def\pexa@@zero{0} +%** `\pexa@curprop\iftrue' behaves like `\iftrue' if the current font is +%** proportional; or `\iffalse' if the current font is fixed-width. +%** Cannot create an `\ifpexa@curprop' macro, since it won't be treated properly +%** when skipped (only \let\ifpexa@curprop\iffalse and \let\ifpexa@curprop\iftrue +%** is treated properly). +%** Ruins \reserved@a +%** Imp: better in pexample.sty +\def\pexa@curprop#1{% + \expandafter\let\expandafter\reserved@a\csname prop@\fontname\font\endcsname + \ifnum10>1\reserved@a% no ` %' here; calculate \reserved@a for the first time + \def\reserved@a{1}% \let\reserved@a0 won't work with `\ifnum' + \ifdim\fontdimen3\font=\z@ + \ifdim\fontdimen4\font=\z@ + \begingroup + \setbox0=\hbox{i}% + \setbox1=\hbox{W}% + \ifdim\wd0=\wd1 % + \aftergroup\let\aftergroup\reserved@a\aftergroup\pexa@@zero% found a fixed-width font + \fi + \endgroup + \fi + \fi + \expandafter\let\csname prop@\fontname\font\endcsname\reserved@a + \fi + \csname if\if\reserved@a0false\else true\fi\endcsname +}% + +% --- + +%** Acts based on usewidth= +%** @in \linewidth has never contained \@totalleftmargin and total_right margin +%** @out \PexaWidth = source+rule+sample a dimen register or tokens ending +%** by space `1.2pt '; \PexaWidth doesn't contain left or right indentation +%** @out \pexa@@calcwidths to set \tabskip to point to final left margin +%** to decrease \linewidth by some margins +%** Will modify \linewidth indirectly: decreases by \leftskip +%** @param #1 value of \pexa@default@usewidth: 0, 1 or 2 +\def\pexa@setup@calcwidths#1{% + \if#12% usewidth=skipwidth + \begingroup + \@tempdimb\linewidth + % Dat: we definitely mustn't do \advance\@tempdimb-\@totalleftmargin, + % because \linewidth has never contained the value of \@totalleftmargin + \advance\@tempdimb-\rightskip \advance\@tempdimb-\leftskip + \edef\PexaWidth{\def\noexpand\PexaWidth{\the\@tempdimb\space}}% + \expandafter\endgroup\PexaWidth + % Dat: we really don't want to say \let\PexaWidth\@tempdimb here, because + % \small in \pexa@defaut@verbatimfont will clobber it later + \def\pexa@@calcwidths{% + % vvv this is called in \pexa@show@halign to set the left margin properly + \tabskip\leftskip \advance\tabskip\@totalleftmargin + %\advance\linewidth-\@totalleftmargin% BUGFIX at Tue Dec 23 19:55:06 CET 2003 -- fixes \PexaShowBoth + %\advance\linewidth-\leftskip% Dat: enabling this makes \begin{egysoros} buggy (too narrow line). BUGFIX at Tue Mar 30 17:40:50 CEST 2004 + %\advance\linewidth-\rightskip% !! is this used? and below? (two) + }% + \else\if#11% usewidth=linewidth + \let\PexaWidth\linewidth + \def\pexa@@calcwidths{\tabskip\@totalleftmargin + %!!\advance\linewidth-\@totalleftmargin% BUGFIX at Tue Dec 23 19:55:06 CET 2003 -- fixes \PexaShowBoth + }% + \else% usewidth=hsize + \let\PexaWidth\hsize + \def\pexa@@calcwidths{\tabskip\z@ \let\linewidth\hsize}% + \fi\fi +} + +\def\PexaShowSample#1{% + \begingroup + \pexa@doopts{#1}% + % vvv Dat: may contain .45\PexaWidth + % \expandafter\@temptokena\expandafter{\pexa@default@samplewidth}% + % !! test this + \begingroup + \@tempdimb\PexaWidth\relax + \let\PexaWidth\@tempdimb + \@tempdima\pexa@default@samplewidth\relax% do arithmetic: .5\PexaWidth + \edef\reserved@a{% + \noexpand\edef\noexpand\PexaWidth{\the\@tempdimb\space}% + \noexpand\PexaShowSampleMany + {\the\@tempdima}% 1 + {\pexa@default@boxstyle}% 2 + }% + %%\show\reserved@a + \expandafter\endgroup\reserved@a + \endgroup% BUGFIX: makes \pexa@doopts have effect +}% + +%** This command is for internal use only. Use \PexaShowSample instead. +%** Shows the Sample in lines on their own. Page breaks disallowed. +%** @param #1 dimen: width of Sample (\hsize, paragraph width). Examples: .4\hsize >= .4\linewidth +%** @param #2 boxing style of Sample (boxstyle=): +%** `h': \hbox +%** `v': \vtop +%** 'm': is minipage with \vtop +%** 'p': is PexaMinipage with \vtop (recommended) +%** `V': \vbox +%** 'M': is minipage with \vbox +%** 'P': is PexaMinipage with \vbox +%** 'G': no boxing, only \begingroup .. \endgroup +\def\PexaShowSampleMany#1#2{% + \if#2G\else + \if#2h\else + \vskip\z@skip% leave horizontal mode + \fi\fi + \csname pexa@setsample@#2\endcsname{#1}% +} + +% --- + +\def\pexa@@tolinewidth{to\PexaWidth} +\def\pexa@@calcwidths{} +%** Default: align left +\def\pexa@@preamble{\pexa@@hpre##\hfil\tabskip\z@ plus1fill} +\def\pexa@@preamblecr{\cr}% or {\cr\noalign{\nobreak}} +\let\pexa@@hpre\@empty +%** Don't allow a page break before Sample is over +\def\pexa@preamblecr@keep{\cr\noalign{% + \ifdim-\pexa@@cnta\baselineskip<\@tempdima\nobreak\fi}}% +%** Default +\let\pexa@@beforehalign\@empty +\let\pexa@@firstlinebeg\@empty +\let\pexa@@beforefirstline\@empty +\def\pexa@default@addlinenum{0}% start line numbering from \pexa@default@addlinenum+1 +\def\pexa@@cnta{0}% +\let\pexa@@cntb\pexa@default@addlinenum% default +%** Contains width of linenumbersep=, too +\def\pexa@default@linenumberwidth{0pt}% +%** Better than `~', because not affected by amsxtra.sty's redefinition. +\def\pexa@default@space{\leavevmode\nobreak\ }% +%** @example \enspace, \quad, \hbox{\space} etc. +%** @example \def\pexa@default@linenumberwidth{\parindent} \def\pexa@default@linenumbersep{\enspace}% +\def\pexa@default@linenumbersep{}% +%** No effect, will be overridden later. +\def\pexa@default@linenumberformat{} + +%** Clobbers \@tempcnta. \gdef#1 +%** @param #1 a macro \cs name expanding to a number +\def\pexa@decr#1{\@tempcnta#1\advance\@tempcnta\m@ne\global\edef#1{\the\@tempcnta}} + +%** A tab is really more complicated than 8 (eight) spaces, but correct +%** tabbing would be hard to implement here. +\def\pexa@setuptab{% + \catcode9 13 \begingroup\lccode`~=9 \lowercase{\endgroup\def~}{\ \ \ \ \ \ \ \ }% +} + +% Imp: insert \relax instead (easy in \PVerb) +\def\pexa@noligs@some{% Imp: use standard \@noligs? + % Common ligatures in monospaced fonts: `` '' ,, -- -Z << >> !` ?` (where Z has ASCII code 127) + % Dat: compare this code with \@noligs of latex.ltx -- this is more efficient + % vvv Dat: this has no effect on \pexa@cverb@outerc (and neither on inner + % \PVerb), but that is hoped to have its \break{}s already separating. + \catcode``13 \lccode`~``\lowercase{\let~\pexa@quoteleft}% break Spanish ?` and !` ligatures in cmtt10.mf (and also the '' ligature in) + \catcode`-13 \lccode`~`-\lowercase{\let~\pexa@hyphen}% break ligatures --, --- and -Z (where Z has ascii code 127) + \catcode`'13 \lccode`~`'\lowercase{\let~\pexa@quoteright}% break ligature '' + \catcode`,13 \lccode`~`,\lowercase{\let~\pexa@comma}% break ligature ,, + \catcode`<13 \lccode`~`<\lowercase{\let~\pexa@less}% break ligature << + \catcode`>13 \lccode`~`>\lowercase{\let~\pexa@greater}% break ligature >> +} +\def\pexa@noligs@most{% + \@tempcnta32 \loop\ifnum\@tempcnta<128 + \ifnum\catcode\@tempcnta=12 + \lccode`~\@tempcnta \lowercase{\edef~{\relax\string~\relax}}% + \fi + \advance\@tempcnta\@ne\repeat +} +\def\pexa@@noligs{\pexa@noligs@some} + +%** Called by \begin{PLines}, \PexaShowBoth, \PVerb etc. +\def\pexa@setupverb{% + \ifnum\the\catcode`^=13 % already active, is \pexa@dohex + \let\do\@makeother \dospecials + \catcode`^=13 + \else + \let\do\@makeother \dospecials% \catcode`\\=12 etc. (see latex.ltx for \dospecials) + \fi + % Dat: `latex --translate-file il1-t1' emits accented glyph to file as a single char + % ^^^ Dat: don't modify catcode of 127..255, so accents will come out right + \catcode32=13 \lccode`~=32 \lowercase{\let~\pexa@default@space}% make each space count, but not a visible space -- \@xobeysp defined in latex.ltx + % ^^^ Dat: former \let~\@xobeysp + \pexa@@noligs + \let\pexa@@oldH\H \let\H\pexa@H% + \let\pexa@@olddot\.\let\.\pexa@dot% +} +%** Not \pexa@default@verbatimfont. This is used by load options to +%** examplep.sty +\def\pexa@@verbatimfont{\verbatim@font}% in latex.ltx +\def\pexa@setupverb@read{% + \catcode`\^13 \lccode`~`^\lowercase{\let~\pexa@dohex}% Dat: allow ^^e1 hex emulation (setting catcode=7 won't do good because of literal `^'s) +} +\def\pexa@starthalign{% + %\zzzzz\show\pexa@@tolinewidth\showthe\PexaWidth + \halign\pexa@@tolinewidth\bgroup + \pexa@@vts% run only once + \pexa@decr\pexa@@cnta + \pexa@decr\pexa@@cntb% must be \global because of \halign, but don't want to clobber \@tempcnt* \global{}ly + \span\pexa@@preamble % expand preamble right now: `##\hfil' + \cr% Dat: \pexa@@preamblecr isn't called _before_ the 1st line +}% +\def\pexa@@starthalign{\pexa@starthalign}% +\def\pexa@@dohalign{% + % vvv Dat: this would give \@@input available to the preamble + %\pexa@@beforefirstline% called after the \cr of the preamble, should contain \noalign{...} + %\relax\@@input\pexa@@cursourcename\space + % + \expandafter\pexa@@beforefirstline% called after the \cr of the preamble, should contain \noalign{...} + \@@input\pexa@@cursourcename\space + %\relax\pexa@setupverb@read% Dat: already called + % ^^^ Dat: \relax instead of \space would begin an extra line and demand + % an extra \cr (at end) + \egroup% terminate \halign +}% +%** Call this inside \begingroup, from a macro +%** Caller may set \pexa@@beforehalign, \tabskip; should pexa@@ +\def\pexa@show@halign{% + \pexa@setupverb + \pexa@setuptab + \pexa@default@verbatimfont + \let\par\pexa@@preamblecr \obeylines% must set \par before this; so each ^^M will emit a \cr plus more + \def\pexa@@vts{% + \pexa@@firstlinebeg + %\vrule height\topskip width\z@ %!! try to do without this + \global\let\pexa@@vts\relax + }% + \pexa@@calcwidths + \pexa@@beforehalign + % Dat: \everypar{...} has no effect here (inside \halign) + \pexa@@starthalign + \pexa@@dohalign +} +\begingroup\lccode`$13 \lowercase{\endgroup\def\pexa@grabline#1${% + % Dat: we use catcode 3 (`$'), because with 13, TeX would expand ^^M first before putting it back (at empty line) + % Dat: TeX inserts the contents of \par upon an empty line -- we have to decode it + %...(#1) + \pexa@@eachline{#1}% + %^^M% give back ^^M, equivalent to + \par}}% +\def\pexa@@dopars{% Dat: in lb: isn't called by \begin{egysoros}, called by \begin{code} + \begingroup% Dat: don't do a \vbox, because it resets \parshape + % \show\par % Dat: \hskip\z@skip \@@par + %\def\par{,\@@par}% + %\obeylines + %\let\par\ourpar \obeylines + %\def\par{xxxxxxxxxxxxxx}% + \catcode13=3 + \ifx\pexa@@eachline\@empty + \everypar{\setbox0\lastbox% remove \indent since \noindent is too late + \pexa@@vts\pexa@@everyparr}% + \else + \everypar{\setbox0\lastbox% remove \indent since \noindent is too late + \pexa@@vts\pexa@@everyparr \tracingmacros1 \pexa@grabline}% + \fi + %\showthe\linewidth + %\showthe\leftskip + \hsize\linewidth + \advance\hsize\leftskip% !! already done by \pexa@show@pars?? -- maybe fixup after hook? + \advance\hsize\rightskip + \pexa@setupverb@read + \relax\input\pexa@@cursourcename\space + \endgroup +}% +\def\pexa@show@pars{% modelled after \pexa@ss@left + \pexa@setupverb% Dat: we still have normal catcodes for \dospecials before calling this + \pexa@setuptab + %\showthe\catcode9 + %\show\pexa@default@verbatimfont + \pexa@default@verbatimfont + %\show\pexa@@calcwidths + \parfillskip\@flushglue + \parskip\z@skip + % + \pexa@@calcwidths% doesn't always change \linewidth; sets \tabskip + % Dat: now \tabskip is the left indentation and \linewidth is the desired + % width of text. From that we calculate \leftskip and \hsize. + \leftskip\tabskip% as calculated by \pexa@@calcwidths + \hsize\linewidth% !! \PexaWidth?, respect \leftskip etc. (\pexa@setup@calcwidths) + \advance\hsize\leftskip + \advance\hsize\rightskip + % + % Dat: we don't change and don't use \parindent + \def\par{\hskip\z@skip\@@par}% obey empty lines + \obeylines + \def\pexa@@vts{% + \pexa@@firstlinebeg + %\vrule height\topskip width\z@% superfluous, ruins \baselineskip + \global\let\pexa@@vts\relax + }% + %\show\leftskip \showthe\leftskip + \pexa@@showparshook % \raggedright etc. + % Dat: \pexa@@dopars is empty for \begin{egysoros}, not empty for \begin{code} + \pexa@@dopars +} + +\def\pexa@@showparshook{} +% Dat: used by source-par-align= +% Dat: \centering, \raggedright and \raggedleft clobbers these: +% \\, \rightskip, \leftskip, \parindent, \parfillskip, \@rightskip. +% We ignore \\, \parindent and \@rightskip, we have to modifye (but not +% clobber) \rightskip, \leftskip and \parfillskip only. So we have our +% own macros. +\def\pexa@paralign@center{% similar to \centering + \leftskip 1\leftskip plus 1fil\relax + \rightskip1\rightskip plus 1fil\relax + \parfillskip\z@skip} +\def\pexa@paralign@left{% similar to \raggedright + % Dat: \leftskip and \rightskip are cumulative + \leftskip 1\leftskip\relax + \rightskip1\rightskip plus 1fill\relax + \parfillskip\z@skip}% + %\parfillskip\@flushglue}% Imp: is \@flushglue better here for the line breaking algorithm? +\def\pexa@paralign@right{% similar to \raggedleft + \leftskip 1\leftskip plus 1fil\relax + \rightskip1\rightskip\relax + \parfillskip\z@skip} +\def\pexa@paralign@justify{% last line left aligned, others justified + \leftskip 1\leftskip\relax + \rightskip1\rightskip\relax + \parfillskip\@flushglue} +\def\pexa@paralign@justjust{% all lines justified => lot of Underfull \hbox{}es + \leftskip 1\leftskip\relax + \rightskip1\rightskip\relax + \parfillskip\z@skip} + +%** @param #1 filename +%** @param #2 examplep options +\def\PexaInputSource#1#2{% + \begingroup + \def\pexa@@cursourcename{#1}% + \PexaShowSource{#2} + \endgroup +} + +%** Dat: not affected by samplewidth= +\def\PexaShowSource#1{% + \clubpenalty\@clubpenalty % allow club lines after \paragraph{x}y\par + \begingroup + \pexa@doopts{#1} + \edef\reserved@a{\noexpand\PexaShowSourceMany + {\pexa@default@srcstyle}% 1 + {\pexa@default@usewidth}% 2 + {\pexa@default@xindent}% 3 + {\pexa@default@yindent}% 4 + }% + %\expandafter\endgroup\reserved@a + \reserved@a + \endgroup% BUGFIX: makes \pexa@doopts have effect +} +%** This command is for internal use only. Use \PexaShowSource instead. +%** Show the source of the previous \begin{WSource} / \begin{WBoth}, +%** @param #1 source display style (srcstyle=): +%** `left': aligned to the left margin +%** `center': center aligned (individual lines left aligned) +%** `right': right aligned (individual lines left aligned) +%** `leftnum': left aligned with unaligned line numbering (similar to what +%** .dtx does) +%** `leftnumcol': right flushed line numbering . left flushed source line +%** `leftnumhang': marginpar-hanging line numbering . left flushed source line +%** `leftboth': similar to \PexaShowBoth, but uses \PVerb (works only with \PSource) +%** `leftbothnumcol': combination of leftboth and leftnumcol +%** `leftleft': two different columns, left aligned with a \pexa@@vrule (works only with \PSource) +%** 'paralign': left by default, affected by source-par-align= +%** @param #2 width selector: `0': use full \hsize, `1': use \linewidth only, +%** `2': use \linewidth-\leftskip-\rightskip (because of \narrower) +%** @param #3 xindent: `none' | `deeper' | `narrower' | `deepright' +%** @param #4 yindent: `none' | `deeper' +\def\PexaShowSourceMany#1#2#3#4{% + \pexa@setup@calcwidths{#2}% + \begingroup + \pexa@xyindent{#3}{#4}% + % Dat: we don't need \pexa@@calcwidths now, it will be called later. + %\pexa@@calcwidths % \leftskip, \@totalleftmargin -> \tabskip + %%\showthe\tabskip + %%\show\pexa@default@listings + \def\pexa@@eachline{}% Dat: used by listings= + \pexa@setup@listings + %%\show\pexa@@eachline + \expandafter\ifx\csname pexa@ss@#1\endcsname\relax + \csname pexa@sh@#1\endcsname% do the actual \input + \else\csname pexa@ss@#1\endcsname\fi + \pexa@@undoyindent + \pexa@endparenvgroup +}% + +\def\pexa@movedeeper{% + \ifnum\@listdepth=\z@ \leftmargin\z@ \rightmargin\z@ \fi% remove garbage + \edef\pexa@@restore@xmargins{% + \noexpand\leftmargin \the\leftmargin + \noexpand\rightmargin\the\rightmargin + }% + \ifnum \@listdepth >5\relax + \@toodeep + \else + %\showthe\@listdepth + \global\advance\@listdepth\@ne + \aftergroup\global\aftergroup\advance\aftergroup\@listdepth\aftergroup\m@ne + \fi + \rightmargin\z@ + % vvv defined in size*.clo, sets \leftmargin, \rightmargin, \topsep, \parsep + % \itemsep etc. + \csname @list\romannumeral\the\@listdepth\endcsname + \let\pexa@@oncedeeper\@empty +} + +\let\pexa@@restore@xmargins\@empty + +% The \pexa@doxindent@... commands to the following: +% +% -- clobber \leftmargin and \rightmargin to an unused value +% -- set \parshape\z@ +% -- decrease \linewidth by additional left and right margin +% -- increase \@totalleftmargin by additional right margin +% -- increase \leftskip by more additional left margin +% -- increase \rightskip by more additional right margin + +\def\pexa@doxindent@none{% + %\advance\@totalleftmargin 5pt + \parshape\z@ +}% +\def\pexa@doxindent@deeper{% + \pexa@@oncedeeper + %\showthe\linewidth + %\showthe\rightmargin + % + % vvv do proper Overfull \hbox calculations + % vvv not done by \pexa@@oncedeeper, for \begin{egysoros} at Wed Jul 7 08:20:23 CEST 2004 + \advance\linewidth -\rightmargin + \advance\linewidth -\leftmargin + % + \advance\@totalleftmargin \leftmargin % do indentation + %\advance\leftskip1em + \parshape\z@% \parshape unused, converted to \tabskip +} +%** xindent=deeppre: move deeper, but keep old \leftmargin and \rightmargin +%** Imp: why is it different from =none unless yalign=deeper +\def\pexa@doxindent@deeppre{% + \pexa@@oncedeeper + %\show\pexa@@restore@xmargins + \pexa@@restore@xmargins + % vvv Dat: removed for lakkbook at Fri Mar 26 17:24:23 CET 2004: + % \linewidth and \@totalleftmargin has already been modified; and + % \leftmargin and \rightmargin doesn't count + % !! make it indent with \begin{PSource} -- or =deeper? + \parshape\z@% \parshape unused, converted to \tabskip +} +\def\pexa@doxindent@narrower{\narrower}% +\def\pexa@doxindent@deepright{% + \pexa@@oncedeeper + \rightmargin\leftmargin + \advance\linewidth -\rightmargin + \advance\linewidth -\leftmargin + \advance\@totalleftmargin \leftmargin + \parshape\z@% \parshape unused, converted to \tabskip +} + +\def\pexa@@str@addvspace{\addvspace} +\def\pexa@undo@nobreak{% + \if@nobreak + \@nobreakfalse + \ifnum\clubpenalty=\@M \clubpenalty\@clubpenalty \fi + \fi} +\def\pexa@doyindent@none{\let\pexa@@undoyindent\@empty + \pexa@undo@nobreak + \@endpetrue\@doendpe % automatic \noindent for text coming -- if not separated by newline +}% +\def\pexa@doyindent@deeper{% + \edef\pexa@@restoreleftskip{\leftskip\the\leftskip\space}% + \@rightskip\rightskip + \pexa@@oncedeeper + \@trivlist % calculates \@topsepadd depending on \ifvmode + %\show\par + \global\@newlistfalse + \pexa@undo@nobreak + \let\makelabel\@firstofone + \let\@itemlabel\@empty + \pexa@@restoreleftskip \let\pexa@@restoreleftskip\@undefined + \def\pexa@@undoyindent{% + % Dat: now \pexa@default@addvspace shouldn't contain \addvspace itself. Brr. + %\ifx\pexa@default@addvspace\pexa@@str@addvspace\else + % \let\addvspace\pexa@default@addvspace % used by \@endparenv called from \endtrivlist + %\fi + %\def\@endparenv{% original in latex.ltx + % \addpenalty\@endparpenalty\addvspace\@topsepadd\@endpetrue} + \def\@endparenv{% original latex.ltx + \addpenalty\@endparpenalty + \pexa@default@addvspace@bottom\@topsepadd + \@endpetrue} + \global\@newlistfalse + \endtrivlist}% + %\showthe\@topsepadd + %\show\pexa@default@addvspace@top + %\pexa@default@addvspace@top\@topsepadd % as calculated by \@trivlist + \expandafter\pexa@default@addvspace@top\expandafter{\the\@topsepadd}% !! as calculated by \@trivlist +} + +\def\pexa@sh@left{% + % SUXX: doesn't work (TeX macro argument parsing bug??): \pexa@dumpcatcodes foo####\hfuzz\hfil\tabskip\z@ plus1fill }% + %\def\pexa@@preamble{% + % % SUXX: more complicated problems with ^^e1 and C ^ operator. Too bad. + % % Dat: now always displays ^^e1 + % %\showthe\catcode`^ + % %\begingroup\lccode`~`^ \lowercase{\endgroup\def~{D\zzzz}} + % \foooo####% Dat: not even `int;' works + % %#### + % \hfil\tabskip\z@ plus1fill }% + \pexa@show@halign +} +\def\pexa@ss@left{% \begin{egysoros} + \let\pexa@@everyparr\@empty + \let\pexa@@showparshook\pexa@paralign@left + \pexa@show@pars +} +\def\pexa@ss@center {\let\pexa@@everyparr\@empty \let\pexa@@showparshook\pexa@paralign@center \pexa@show@pars} +\def\pexa@ss@right {\let\pexa@@everyparr\@empty \let\pexa@@showparshook\pexa@paralign@right \pexa@show@pars} +\def\pexa@sh@paralign{% + \PackageError{examplep}{srcstyle=paralign only works in par mode}\@ehc + \pexa@sh@left +} +\def\pexa@ss@paralign{\let\pexa@@everyparr\@empty \pexa@show@pars} + +\def\pexa@getcatcode#1{% + \ifcat\noexpand~\noexpand#113% + \else\ifcat\relax\noexpand#1cs% control sequence + \else\ifcat,\noexpand#112% + \else\ifcat a\noexpand#111% + \else\ifcat\space\noexpand#110 % Dat: never, would be ignored by macro expansion + \else\ifcat_\noexpand#18% + \else\ifcat^\noexpand#17% + \else\ifcat&\noexpand#14% + \else\ifcat$\noexpand#13% + \else?\fi\fi\fi\fi\fi\fi\fi\fi\fi +} + +%** Usage: \pexa@dumpcatcodes...\hfuzz +%** Dat: no braces or spaces, please +%** @example \pexa@dumpcatcodes Hello, World & People ($100_)!\hfuzz +\long\def\pexa@dumpcatcodes#1{% + \ifx#1\hfuzz\typeout{}\else + \message{\string#1_\pexa@getcatcode#1}% + \expandafter\pexa@dumpcatcodes + \fi} +%** @example: \pexa@showcatcodes~ (-> \penalty etc.) +\def\pexa@showcatcodes#1{% + \typeout{}% + \expandafter\pexa@dumpcatcodes#1\hfuzz} + +\expandafter\def\expandafter\pexa@ifcount@low + \expandafter#\expandafter1\string\count#2\hfuzz{% + \ifx\vfuzz#1\vfuzz\expandafter\@firstoftwo + \else\expandafter\@secondoftwo\fi} +%** Test whether #1 is a count register or not, exceute #2 or #3. +\def\pexa@ifcount#1{\expandafter\expandafter\expandafter\pexa@ifcount@low + \expandafter\meaning\csname#1\expandafter\endcsname\string\count\hfuzz} + +\def\pexa@listings@noligs{% + \def\lst@FillOutputBox##1{##1\lst@FillOutputBox@}% + \def\lst@FillOutputBox@##1{% + \ifx\@empty##1\else \relax##1\expandafter\lst@FillOutputBox@ \fi}% +} + +\def\pexa@bsspace{\ }% +\def\pexa@listings@convert{\futurelet\@let@token\pexa@listings@convert@@} +\def\pexa@listings@convert@@{% + \ifcat\noexpand\@let@token\bgroup \expandafter\pexa@listings@convertArg + \else \expandafter\pexa@listings@convert@S \fi} +\def\pexa@listings@convert@S{% + \ifx\@let@token\pexa@bsspace \expandafter\pexa@listings@convert@SP + \else \expandafter\pexa@listings@convert@ \fi} +\def\pexa@listings@convert@SP#1{% + \lst@lAddTo\lst@arg{\lst@UseLostSpace\lst@PrintToken\lst@outputspace}% + \pexa@listings@convert}% +\def\pexa@listings@convert@#1{% + \ifx \@nil#1\else + \lst@if + \if\relax\noexpand#1% a control sequence + \lst@lAddTo\lst@arg{\lst@UseLostSpace\lst@PrintToken\lst@currstyle#1}% + \else\ifcat\noexpand~\noexpand#1% an active character -- this makes inputenc.sty work + \lst@lAddTo\lst@arg{\lst@UseLostSpace\lst@PrintToken\lst@currstyle#1}% Dat: \lst@currstyle: for string literal "á" in C + \else + \lccode`\~=`#1\lowercase{\lst@lAddTo\lst@arg~}% + \fi\fi + \else + \lccode`\~=`#1\lowercase{\lst@lAddTo\lst@arg~}% + \fi + \expandafter\pexa@listings@convert + \fi} + +%\def\lst@arg{} +%\pexa@listings@convert\@nil +%\show\lst@arg + +\def\pexa@@listingsfont{\normalfont} +\begingroup\lccode`~13 \lowercase{\endgroup\def\pexa@listings@grabhrow#1~{% + \def\par{}% Dat: needed to make \pexa@@preamblecr (-) disappear. This is magic I don't understand. + \pexa@listings@eachline{#1}\cr +}}% +% vvv Dat: proper for the monospaced typewriter fonts +\def\pexa@listings@emittab{\lst@keepspacestrue\setbox0\hbox{ }\lst@width\wd0 \lst@ProcessTabulator} +\def\pexa@listings@eachline#1{% + \begingroup + \let\lst@arg\@empty + %\showthe\catcode0 % nul, invalid + %\showthe\catcode12 % form feed, ignored + %\showthe\catcode127 % erase, active (overridden by listings.sty), originally `\@inpenc@undefined@ {latin2}' + %\@tempcnta0 \loop\ifnum\@tempcnta<32 + % \ifnum\catcode\@tempcnta=13\relax\else\message{!\the\@tempcnta}\fi + % \advance\@tempcnta\@ne\repeat + %\loop\ifnum\@tempcnta<128 + % \ifnum\catcode\@tempcnta=13\relax\message{\the\@tempcnta}\fi + % \advance\@tempcnta\@ne\repeat + %\loop\ifnum\@tempcnta<256 + % \ifnum\catcode\@tempcnta=13\relax\else\message{!\the\@tempcnta}\fi + % \advance\@tempcnta\@ne\repeat + %\def\reserved@a{for\ 5<=6 fot 7>=6\ while(1)"while t\foobar"?` 1<<2}% + %\catcode`<12 % Dat: too late + \lst@true% Dat: turn on keyword highlighting (such as `for') and `\ ' as space + % vvv BUGFIX: removed \expandafter + \pexa@listings@convert#1\@nil % Dat: changes all catcodes to 13, and prepends \lst@UseLostSpace\lst@PrintToken to control sequences; converts args recursively(!) + \lst@Let{9}\pexa@listings@emittab% Dat: ^^I is already active in \lst@arg + % ^^^ Dat: listings={keepspaces}, listings={} or listings={showtabs} have to be used + %\lst@lAddTo\lst@arg{foo}% + %\show\lst@arg + %%\show\lst@arg + % Dat: f_13 o_13 r_13 just append to \lst@token, but r_13 looks it up and emits the token in proper style + % Imp: don't convert args recursively + \pexa@ifcount{lst@newlines}{\global\lst@newlines\z@}{\global\let\lst@newlines\@empty}% Dat: became \count in listings-1.3 + % Dat: \lstFV@FancyVerbFormatLine has \vtop{\leavevmode...} here + \lsthk@InitVarsBOL + \setbox\@tempboxa\hbox{%\pexa@@listingsfont% Dat: already set + \lst@ReenterModes + %%\pexa@showcatcodes\lst@arg + %%\show\lst@arg + \lst@arg \lst@PrintToken \lst@EOLUpdate + \lst@InterruptModes}% + \unhbox\@tempboxa + \endgroup}% +\def\pexa@pre@listings@low{% Dat: experimental -- SUXX: doesn't work (interface undocumented) + % Dat: better: breaks ligatures (`?, << -- but also `fi') + % Dat: better: allows ISO-8859-* accented letters (there might be problems with UTF-8) + % Dat: listings SUXX: `literate={<=}{{$\leq$}}1' has effect inside strings! + % Dat: keyword highlighting with accented chars still not possbile (because the accent has different definition for catcode 13) + % Dat: enforces columns=fullflexible + \csname lst@column@fullflexible\endcsname % Dat: columns=fixed doesn't work well, columns=flexible seems to be the same + \let\pexa@default@space\pexa@bsspace% Dat: works + \let\pexa@@eachline\pexa@listings@eachline % for \pexa@show@pars + \let\pexa@@preamblecr-% for \pexa@show\@halign + \let\pexa@@hpre\pexa@listings@grabhrow% for \pexa@show\@halign + \lsthk@TextStyle + \lsthk@BoxUnsafe + \lsthk@PreSet + \lst@activecharsfalse% Imp: why, what does it mean -- why doesn't it work with true? + \let\normalbaselines\relax + % vvv \lst@Init\relax% Dat: original has \begingroup + \normalbaselines + \lst@MakeCaption t% + \lsthk@PreInit \lsthk@Init + %\everypar{\lsthk@EveryLine\lsthk@EveryPar}% Dat: this removes extra indentation, frames, \parshape added by listsins.sty + \lsthk@InitVars + \lsthk@InitVarsBOL + \lst@Let{13}\lst@MProcessListing + \let\lst@Backslash\relax + % vvv \lst@EnterMode{\lst@Pmode}{\lst@SelectCharTable}% + \lst@mode=\lst@Pmode\relax + \lst@SelectCharTable % Dat: \def<{...}, \def5{...} 32..127 plus some more -- overrides forcibly; doesn't touch 128..255 + % \lst@Def{9}{\lst@ProcessTabulator}% Imp: this doesn't work + %\lst@lAddTo\lst@entermodes{\lst@EnterMode{#1}{#2}}}% Dat: won't be used + \pexa@ifcount{lst@newlines}{\global\lst@newlines\z@}{\global\let\lst@newlines\@empty}% Dat: became \count in listings-1.3 + \lst@mode\lst@nomode \let\lst@entermodes\@empty + \lst@InterruptModes + \let\@noligs\relax + \let\pexa@@noligs\relax + \let\pexa@default@verbatimfont\pexa@@listingsfont + \pexa@listings@noligs + %\normalfont % Dat: too early here, will be changed back \normalfont +} +\let\pexa@default@listings\relax +\def\pexa@setup@listings{% + \ifx\pexa@default@listings\relax\else + \expandafter\ifx\csname endlstlisting\endcsname\relax + \PackageError{examplep}{Package listings is not loaded}\@ehc + \else + % Dat: \PexaShowSource keeps 32=10, but \begin{PSource} sets it to 13 + \edef\pexa@@restore@space{\catcode32=\the\catcode32\relax}% + %\ifnum\catcode32=13 \else + %\else\ifnum\catcode32=10 \else + % \PackageError{examplep}{Unexpected catcode for space: \the\catcode32}\@ehc\fi\fi + \catcode32=10 % Dat: lstlang*.sty might get loaded now + \expandafter\lstset\expandafter{\pexa@default@listings}% e.g \usepackage[listings={language=c}]{examplep} + \pexa@pre@listings@low% Dat: overrides values above + \pexa@@restore@space + \fi + \fi +} + +\def\pexa@sh@center{% + \def\pexa@@beforehalign{\advance\tabskip\z@ plus1fill }% + \def\pexa@@preamble{\pexa@@hpre####\hfil\tabskip\z@ plus1fill }% + \pexa@show@halign +} +\def\pexa@sh@right{% + \def\pexa@@preamble{\pexa@@hpre####\hfil\tabskip\z@}% + \def\pexa@@beforehalign{\tabskip\z@ plus1fill }% + \pexa@show@halign +} +\def\pexa@sh@leftnum{% + \def\pexa@@preamble{{\pexa@default@linenumberformat}\pexa@@hpre####\hfil\tabskip\z@ plus1fill }% + \let\pexa@@cntb\pexa@default@addlinenum + \pexa@show@halign +} +% +%** Called from within an alignment (preamble). +\def\pexa@pre@leftboth@do{% + % Dat: \@tempdima has been set by \pexa@@beforehalign to the available + % width for the Source + % Dat: \hb@xt@ will emit Overfull \hbox correctly + \if0\pexa@default@allowshrink\setbox0\hb@xt@\@tempdima\bgroup + \else\setbox0\hbox\bgroup\fi + \expandafter\expandafter\expandafter\PVerbOpt + \expandafter\expandafter\expandafter,% + \expandafter\expandafter\expandafter{% + \expandafter\@gobble\reserved@a}% + \hfil + \egroup + \labelsep\FBHLastDepth% Dat: I hope that \labelsep isn't used in \reserved@a + \global\FBHLastDepth\dp0 + \setbox1\hbox{\reserved@a}% just a measurement + \ifdim\FBHLastDepth<\dp1 \global\FBHLastDepth\dp1 \fi + % + % vvv let \vrules meet. Better than \strut + \ifdim\baselineskip>\labelsep + % Dat: safe to modify \@tempdimb here, because we're inside a group of an alignment + \@tempdimb\baselineskip \advance\@tempdimb-\labelsep + \vrule\@height\@tempdimb\@width\z@\space + \fi +} +%** Emits one Source line (left column) +\def\pexa@pre@leftleftboth@put{% + % Dat: \@tempdima has been set by \pexa@@beforehalign to the available + % width for the Source + % Dat: \box0 now contains the Source line (within \hbox{} or + % \hbox to\@tempdima{}, see \pexa@pre@leftboth@do + \advance\@tempdima-\wd0 + \if0\pexa@default@allowshrink\box0 + \else + \unhbox0 % Dat: no effect of \hfil? + \ifdim\@tempdima>\z@\if2\pexa@default@allowshrink\else + \kern\@tempdima + \null + \fi\fi + \fi +}% +\def\pexa@pre@leftboth@beforehalign{% + %\def~{;;}%\nobreakspace{}}% + \let\\\relax% ignore newlines in sample + \lineskiplimit\z@ \lineskip\z@% !! more liberal, accept negative + \newdimen\FBHLastDepth% for \global + \FBHLastDepth\baselineskip + % + %\show\PexaWidth + \@tempdimb\PexaWidth\relax + \let\PexaWidth\@tempdimb + \@tempdima-\pexa@default@samplewidth\relax% do arithmetic: .5\PexaWidth + \advance\@tempdima\PexaWidth + \edef\PexaWidth{\the\@tempdimb\space}% + %\@tempdima\PexaWidth + %\advance\@tempdima-\pexa@default@samplewidth + \setbox1\hbox{\pexa@@vrule{}}% + \advance\@tempdima-\wd1 + %\hrule height 1pt width 10pt +}% +\def\pexa@sh@leftboth{% + \ifx\pexa@@starthalign\@empty% Dat: \begin{PSource} + \let\pexa@@beforehalign\pexa@pre@leftboth@beforehalign + \def\pexa@@eachline##1{##1&&##1}% + \def\pexa@@preamble{% + \def\reserved@a{####}% + %\show\reserved@a% + \pexa@pre@leftboth@do + \pexa@pre@leftleftboth@put + % ^^^ \@gobble removes \relax inserted by \pexa@plines@start + \hfil\tabskip\z@skip& + \pexa@@vrule{}####&% Dat: \copy2 wouldn't work by this time + {####}\tabskip\z@ plus1fill\hfil}% Dat: \selectlanguage inside #### needs an extra {group} + \pexa@plines@notverbatim + \expandafter\pexa@show@halign + \else + % Imp: make this work with \PexaShowSource; also for srcstyle=leftleft + % Dat: Runaway definition? ->foo$1+2$^^Mfood^^Mbar^^M + % ! File ended while scanning definition of \reserved@a. + % <inserted text> } + % l.268 \PexaShowSource{srcstyle=leftboth} + \PackageError{examplep}{srcstyle=leftboth works only inside PSource}\@ehc + \expandafter\pexa@sh@left + \fi +} +\def\pexa@sh@leftbothnumcol{% added at Tue Jan 11 16:40:47 CET 2005 + \ifx\pexa@@starthalign\@empty% Dat: \begin{PSource} + \let\pexa@@beforehalign\pexa@pre@leftboth@beforehalign + \def\pexa@@eachline##1{##1&&##1}% + \def\pexa@@preamble{% + \hfil\pexa@pre@numcol@eachrow####\tabskip\z@skip&% Dat: adds `&' + \def\reserved@a{####}% + %\show\reserved@a% + \pexa@pre@leftboth@do + \pexa@pre@leftleftboth@put + % ^^^ \@gobble removes \relax inserted by \pexa@plines@start + \hfil\tabskip\z@skip& + \pexa@@vrule{}####&% Dat: \copy2 wouldn't work by this time + {####}\tabskip\z@ plus1fill\hfil}% Dat: \selectlanguage inside #### needs an extra {group} + \pexa@plines@notverbatim + \let\pexa@@cntb\pexa@default@addlinenum + \expandafter\pexa@show@halign + \else + \PackageError{examplep}{srcstyle=leftbothnumcol works only inside PSource}\@ehc + \expandafter\pexa@sh@left + \fi +} +% +\def\pexa@pre@leftleft@measure{% + % Dat: \@tempdima has been set by \pexa@@beforehalign to the available + % width for the source + % Dat: \hb@xt@ will emit Overfull \hbox correctly + \setbox0\hbox{\reserved@a}% just a measurement + \ifdim\FBHLastDepth<\dp0 \global\FBHLastDepth\dp0 \fi +}% +\def\pexa@ampersand{&}% +\def\pexa@sh@leftleft{% + \ifx\pexa@@showhalign\@empty% Dat: \begin{PSource} + \let\pexa@@beforehalign\pexa@pre@leftboth@beforehalign + \def\pexa@@preamble{% + \relax + \ifdim\baselineskip>\FBHLastDepth + % Dat: safe to modify \@tempdimb here, because we're inside a group of an alignment + \@tempdimb\baselineskip \advance\@tempdimb-\FBHLastDepth + \vrule\@height\@tempdimb\@width\z@\space + \fi + % vvv let \vrules meet. Better than \strut + \global\FBHLastDepth\z@ + \def\reserved@a{####}% + \pexa@pre@leftleft@measure \pexa@pre@leftleftboth@put + \hfil\tabskip\z@skip&\pexa@@vrule{}\pexa@ampersand####&% + \def\reserved@a{####}% + \pexa@pre@leftleft@measure \unhbox0 + \tabskip\z@ plus1fill\hfil}% + \pexa@plines@notverbatim + \expandafter\pexa@show@halign + \else + \PackageError{examplep}{srcstyle=leftleft works only inside PSource}\@ehc + \expandafter\pexa@sh@left + \fi +} +% +\def\pexa@pre@numcol@eachrow{{\pexa@default@linenumberformat}&}% +\def\pexa@sh@leftnumcol{% + \def\pexa@@preamble{\hfil\pexa@pre@numcol@eachrow####&% + \pexa@@hpre####\hfil\tabskip\z@ plus1fill }% + \let\pexa@@cntb\pexa@default@addlinenum + \pexa@show@halign +} +% +\def\pexa@sh@leftnumhang{% + \def\pexa@@preamble{\hb@xt@\pexa@default@linenumberwidth{\hss\pexa@default@linenumberformat}\pexa@@hpre####\hfil\tabskip\z@ plus1fill }% + \let\pexa@@cntb\pexa@default@addlinenum + \pexa@show@halign +} +\def\pexa@ss@leftnumhang{% + \def\pexa@@everyparr{% + \pexa@decr\pexa@@cntb + \hb@xt@\pexa@default@linenumberwidth{\hss\pexa@default@linenumberformat}% + } + \let\pexa@@cntb\pexa@default@addlinenum + \pexa@show@pars +} +\def\pexa@ss@leftnum{% at Tue Jan 11 15:14:33 CET 2005 + \def\pexa@@everyparr{% + \pexa@decr\pexa@@cntb + {\pexa@default@linenumberformat}}% + \let\pexa@@cntb\pexa@default@addlinenum + \pexa@show@pars +} + +\def\pexa@default@sourcesepwidth{\tabcolsep} + +%** Default. +%** @param #1 desired height; specified by horizontal neighbours if empty +\def\pexa@vrule@rule#1{% + \kern\pexa@default@sourcesepwidth\relax + \kern-.5\tabcolsep + \kern-.5\arrayrulewidth + \ifx\hfuzz#1\hfuzz + \vrule\@width\arrayrulewidth + \else + \vrule\@width\arrayrulewidth\@height#1\relax + \fi + \kern-\arrayrulewidth + \kern.5\arrayrulewidth + \kern.5\tabcolsep +} +\def\pexa@vrule@skip#1{\kern\pexa@default@sourcesepwidth\relax} +\def\pexa@vrule@none#1{} +\def\pexa@@vrule{\pexa@vrule@rule} + +%** @param #1 to gobble a space token +\def\pexa@doopt#1,{% + \if,\noexpand#1,% ignore multiple commas (#1 is empty) + \expandafter\pexa@doopt + \else + \csname fi\endcsname% don't count as `\fi' when being skipped + \pexa@doopt@low#1,=,% + \fi +} +\iftrue\csname fi\endcsname% \def\pexa@doopt@low contains `\fi'. Make it skippable. +%** @param #1 is here for gobbling space tokens +%** @param #4 \fi -- will be ignored +\def\pexa@doopt@low#1#2=#3,#4\fi{% + % Dat: Normal case: #1#2 is key, #3 is value, #4 is `=,' + % Dat: MissingArg case: #1#2 is `key,', #3 is empty, #4 is empty + % Dat: Terminator case: #1#2 is `\hfuzz,', #3 is empty, #4 is empty + % Dat: OnlySpace case: #1 is `,', #2 is empty, #3 is empty, #4 is empty + \ifx\relax#4\relax% MissingArg or Terminator + \ifx#1\hfuzz% Terminator + \else + \if,\noexpand#1\else% OnlySpace case + \pexa@doopt@missingval#1#2% #2 already contains comma at end + \fi + \expandafter\expandafter\expandafter\pexa@doopt + \fi + \else% Normal + \expandafter\ifx\csname pexa@opt@@#1#2\endcsname\hfuzz + \expandafter\ifx\csname pexa@opt@@#1#2@#3\endcsname\relax + \PackageError{examplep}{Invalid arg for option: #1#2 = #3}\@ehc + \else + \csname pexa@opt@@#1#2@#3\endcsname + \fi + \else + \expandafter\ifx\csname pexa@opt@@#1#2\endcsname\relax + \PackageError{examplep}{Unknown option: #1#2 (= #3)}\@ehc + \else + \csname pexa@opt@@#1#2\endcsname{#3}% + \fi + \fi + \expandafter\pexa@doopt + \fi +} +\def\pexa@doopt@missingval#1,{% + \PackageError{examplep}{Value (=) missing for option: #1}\@ehc +} +%** Dat: Spaces and newlines at end of #1 are not ignored, so please prefix +%** them with a comma, e.g \pexa@doopts{foo=bar, } +%** @param #1 comma-separated optoinname=value pairs +\def\pexa@doopts#1{\pexa@doopt #1,\hfuzz,}% +\let\PexaDefaults\pexa@doopts + +%** The maximum Sample width. +\def\pexa@opt@@samplewidth#1{\def\pexa@default@samplewidth{#1}}% +%** The width of the separator between the Source and the Sample. +\expandafter\def\csname pexa@opt@@source-sepwidth\endcsname#1{\def\pexa@default@sourcesepwidth{#1}}% +\def\pexa@opt@@firstlinenum#1{% + \begingroup\@tempcnta\number-#1\relax + \advance\@tempcnta\@ne + \edef\reserved@a{\def\noexpand\pexa@default@addlinenum{\the\@tempcnta}}% + \expandafter\endgroup\reserved@a +} +%** A dimension. Depth that yalign=v should neglect at the bottom of the Sample. +%** Should not be too much (i.e more than the depth of `g'), because a page +%** break might occur just below the Sample, and too much text would be put +%** below the bottom margin. +\def\pexa@opt@@vextrabotdepth#1{\def\pexa@default@vextrabotdepth{#1}} +\def\pexa@opt@@addlinenum#1{\def\pexa@default@addlinenum{\number-#1}} +\def\pexa@opt@@linenumbersep#1{\def\pexa@default@linenumbersep{#1}} +\def\pexa@opt@@linenumberformat#1{\def\pexa@default@linenumberformat{#1}} +%** lb.sty overrides it: \def\pexa@default@addvspace{\lakkbook@vspace} +\expandafter\def\csname pexa@opt@@addvspace-top\endcsname#1{\def\pexa@default@addvspace@top{#1}} +\expandafter\def\csname pexa@opt@@addvspace-bottom\endcsname#1{\def\pexa@default@addvspace@bottom{#1}} +%** Extra vertical distance for aligning top lines at yalign=v +\def\pexa@opt@@vextravskip#1{\def\pexa@default@vextravskip{#1}} +%** Maximum height of ``small'' sample at yalign=v +\def\pexa@opt@@vsmallht#1{\def\pexa@default@vsmallht{#1}} +\def\pexa@opt@@linenumberwidth#1{\def\pexa@default@linenumberwidth{#1}} +\expandafter\def\csname pexa@opt@@pexaminipage-setuphook\endcsname#1{\def\pexa@@minipage@setuphook{#1}} +\def\pexa@opt@@xalign@l{\def\pexa@default@xalign{l}}% +\def\pexa@opt@@xalign@r{\def\pexa@default@xalign{r}}% +\let\pexa@opt@@xalign\hfuzz +%** These correspond to \pexa@sa@u and \pexa@sa@b +\def\pexa@opt@@yalign@b{\def\pexa@default@yalign{b}}% align \vtop baselines +\def\pexa@opt@@yalign@u{\def\pexa@default@yalign{u}}% align upper corners +\def\pexa@opt@@yalign@v{\def\pexa@default@yalign{v}}% align upper corners unless Sample is too high. Recommended. Very usefule with baseline grid. +\let\pexa@opt@@yalign\hfuzz +\def\pexa@opt@@xindent@none{\def\pexa@default@xindent{none}}% +\def\pexa@opt@@xindent@deeper{\def\pexa@default@xindent{deeper}}% +\def\pexa@opt@@xindent@deeppre{\def\pexa@default@xindent{deeppre}}% +\def\pexa@opt@@xindent@narrower{\def\pexa@default@xindent{narrower}}% +\def\pexa@opt@@xindent@deepright{\def\pexa@default@xindent{deepright}}% +\let\pexa@opt@@xindent\hfuzz +\def\pexa@opt@@yindent@none{\def\pexa@default@yindent{none}}% +\def\pexa@opt@@yindent@deeper{\def\pexa@default@yindent{deeper}}% +\let\pexa@opt@@yindent\hfuzz + +\def\pexa@opt@@Q@yes{\pexa@activate@Q}% +\def\pexa@opt@@Q@unchanged{}% +\let\pexa@opt@@Q\hfuzz +\def\pexa@opt@@bsdiv@yes{\pexa@activate@bsdiv}% +\def\pexa@opt@@bsdiv@unchanged{}% +\let\pexa@opt@@bsdiv\hfuzz +\def\pexa@opt@@verbatimenv@yes{\pexa@activate@verbatimenv}% +\def\pexa@opt@@verbatimenv@unchanged{}% +\let\pexa@opt@@verbatimenv\hfuzz +\def\pexa@opt@@abreak@yes{\pexa@activate@abreak}% +\def\pexa@opt@@abreak@unchanged{}% +\let\pexa@opt@@abreak\hfuzz +\def\pexa@opt@@div@yes{\pexa@activate@div}% +\def\pexa@opt@@div@unchanged{}% +\let\pexa@opt@@div\hfuzz +\def\pexa@opt@@url@yes{\pexa@activate@url}% +\def\pexa@opt@@url@unchanged{}% +\let\pexa@opt@@url\hfuzz + +\def\pexa@opt@@boxstyle@h{\def\pexa@default@boxstyle{h}}% +\def\pexa@opt@@boxstyle@v{\def\pexa@default@boxstyle{v}}% +\def\pexa@opt@@boxstyle@m{\def\pexa@default@boxstyle{m}}% +\def\pexa@opt@@boxstyle@p{\def\pexa@default@boxstyle{p}}% +\def\pexa@opt@@boxstyle@V{\pexa@optboxstyle@noboth\def\pexa@default@boxstyle{V}}% +\def\pexa@opt@@boxstyle@M{\pexa@optboxstyle@noboth\def\pexa@default@boxstyle{M}}% +\def\pexa@opt@@boxstyle@P{\pexa@optboxstyle@noboth\def\pexa@default@boxstyle{P}}% +\def\pexa@opt@@boxstyle@G{\pexa@optboxstyle@noboth\def\pexa@default@boxstyle{G}}% +\let\pexa@opt@@boxstyle\hfuzz +\let\pexa@optboxstyle@noboth\@empty +\def\pexa@optboxstyle@inboth{\PackageError{pexample}{Arg unapplicable for boxstyle=}\@ehc} +%** allowshrink=force works only for \begin{PSource}[srcstyle=leftboth] and +%** [srcstyle=leftleft] +\def\pexa@opt@@allowshrink@force{\def\pexa@default@allowshrink{2}}% +\def\pexa@opt@@allowshrink@yes{\def\pexa@default@allowshrink{1}}% +\def\pexa@opt@@allowshrink@no{\def\pexa@default@allowshrink{0}}% +\let\pexa@opt@@allowshrink\hfuzz +\def\pexa@opt@@allowbreak@yes{\def\pexa@default@allowbreak{1}}% +\def\pexa@opt@@allowbreak@no{\def\pexa@default@allowbreak{0}}% +\let\pexa@opt@@allowbreak\hfuzz +\def\pexa@opt@@inlineprefix#1{% + % Imp: separate our (local) usage of \verbfwr$percent from other applications + % Dat: \if instead of \ifx because of \active: + \def\verbfwr@percent##1##2\relax{% + \ifx##1\relax\def\VerbFwrLines{}\else + \if\noexpand##1#1\relax\def\VerbFwrLines{##2}\else\def\VerbFwrLines{##1##2}\fi\fi}% +} +\def\pexa@opt@@srcstyle#1{% + \expandafter\ifx\csname pexa@sh@#1\endcsname\relax + \PackageError{examplep}{Unknown srcstyle: srcstyle = #1}\@ehc + \else\edef\pexa@default@srcstyle{#1}\fi% +} +\def\pexa@@no{no}% +\def\pexa@@yes{yes}% +\def\pexa@opt@@listings#1{% + \def\reserved@a{#1}% !! \begingroup + \let\pexa@default@listings\relax + \ifx\reserved@a\pexa@@yes \let\reserved@a\@empty\fi + \ifx\reserved@a\pexa@@no\else + \expandafter\ifx\csname endlstlisting\endcsname\relax + \PackageError{examplep}{Package listings is not loaded}\@ehc + \else\let\pexa@default@listings\reserved@a\fi + \fi +} +%** Dat: #1 passed to \pexa@opt@@listings +\def\pexa@opt@@ttlistings{% + \csname pexa@opt@@listings-verbatimfont@ttfamily\endcsname + \pexa@opt@@listings +} + +%** usewidth=hsize: use full \hsize +%** usewidth=linewidth: use only \linewidth (\hsize - \@totalleftmargin - +%** - total_right_margin) +%** usewidth=skipwidth: use \linewidth - \leftskip - \rightskip +\def\pexa@opt@@usewidth@skipwidth{\def\pexa@default@usewidth{2}} +\def\pexa@opt@@usewidth@linewidth{\def\pexa@default@usewidth{1}} +\def\pexa@opt@@usewidth@hsize {\def\pexa@default@usewidth{0}} +\let\pexa@opt@@usewidth\hfuzz +\def\pexa@opt@@noligs@some {\def\pexa@@noligs{\pexa@noligs@some}} +\def\pexa@opt@@noligs@most {\def\pexa@@noligs{\pexa@noligs@most}} +\def\pexa@opt@@noligs@kernel {\def\pexa@@noligs{\pexa@noligs@kernel}} +\def\pexa@opt@@noligs@unchanged{\def\pexa@@noligs{\relax}} +\let\pexa@opt@@noligs\hfuzz +\expandafter\def\csname pexa@opt@@pverb-leftbreakmin@0\endcsname {\def\pexa@default@pverbleftbreakmin{0}} +\expandafter\def\csname pexa@opt@@pverb-leftbreakmin@1\endcsname {\def\pexa@default@pverbleftbreakmin{1}} +\expandafter\def\csname pexa@opt@@pverb-leftbreakmin@2\endcsname {\def\pexa@default@pverbleftbreakmin{2}}% Dat: higher values not implemented +\expandafter\let\csname pexa@opt@@pverb-leftbreakmin\endcsname\hfuzz +%\def\pexa@@showparshook{} +\expandafter\def\csname pexa@opt@@source-par-align@left\endcsname {\def\pexa@@showparshook{\pexa@paralign@left}}% Imp: \csname...\relax test +\expandafter\def\csname pexa@opt@@source-par-align@right\endcsname {\def\pexa@@showparshook{\pexa@paralign@right}} +\expandafter\def\csname pexa@opt@@source-par-align@center\endcsname {\def\pexa@@showparshook{\pexa@paralign@center}} +\expandafter\def\csname pexa@opt@@source-par-align@justify\endcsname{\def\pexa@@showparshook{\pexa@paralign@justify}} +\expandafter\def\csname pexa@opt@@source-par-align@justjust\endcsname{\def\pexa@@showparshook{\pexa@paralign@justjust}} +\expandafter\def\csname pexa@opt@@source-par-align@unchanged\endcsname{\def\pexa@@showparshook{}} +\expandafter\let\csname pexa@opt@@source-par-align\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@source-space@invbreak\endcsname {\def\pexa@default@space{\ }}% breakable +\expandafter\def\csname pexa@opt@@source-space@invdisc\endcsname {\def\pexa@default@space{\nobreak\discretionary{\char32}{}{\hbox{\ }}\nobreak\hskip\z@skip}}% breakable with discretionary +\expandafter\def\csname pexa@opt@@source-space@invbreakleft\endcsname{\def\pexa@default@space{\ \nobreak\hskip0pt plus1fil\null\hskip0pt plus-1fil\pexa@cverb@skipbreak@i}}% breakable; SUXX: has infinite stretchability in the middle of a line(??) +\expandafter\def\csname pexa@opt@@source-space@invfixbreak\endcsname{\def\pexa@default@space{\ {\@tempdima\lastskip\unskip\hskip\@tempdima}}}% breakable +\expandafter\def\csname pexa@opt@@source-space@invnobreak\endcsname {\def\pexa@default@space{\leavevmode\nobreak\ }}% nonbreakable +\expandafter\def\csname pexa@opt@@source-space@visnobreak\endcsname {\def\pexa@default@space{\char32 }}% visible in \tt, nonbreakable +\expandafter\def\csname pexa@opt@@source-space@visbreak\endcsname {\def\pexa@default@space{\hskip\z@skip\char32 \hskip\z@skip}}% visible in \tt, breakable +\expandafter\let\csname pexa@opt@@source-space\endcsname\hfuzz +% vvv Dat: pverb-space=invbreak will break, but not stretch or shrink +% vvv Dat: they need \pexa@cverb@skipbreak@i +\expandafter\def\csname pexa@opt@@pverb-space@invbreak\endcsname {\def\pexa@cverb@@space{\ \pexa@cverb@skipbreak@i}}% breakable +\expandafter\def\csname pexa@opt@@pverb-space@invdisc\endcsname {\def\pexa@cverb@@space{\nobreak\discretionary{\char32}{}{\hbox{\ }}\nobreak\hskip\z@skip \pexa@cverb@skipbreak@i}}% breakable with discretionary +\expandafter\def\csname pexa@opt@@pverb-space@invbreakleft\endcsname{\def\pexa@cverb@@space{\ \nobreak\hskip0pt plus1fil\null\hskip0pt plus-1fil\pexa@cverb@skipbreak@i}}% breakable; SUXX: has infinite stretchability in the middle of a line(??) +\expandafter\def\csname pexa@opt@@pverb-space@invfixbreak\endcsname{\def\pexa@cverb@@space{\ {\@tempdima\lastskip\unskip\hskip\@tempdima}}}% breakable +\expandafter\def\csname pexa@opt@@pverb-space@invnobreak\endcsname{\def\pexa@cverb@@space{\leavevmode\nobreak\ \pexa@cverb@skipbreak@i}}% nonbreakable +\expandafter\def\csname pexa@opt@@pverb-space@visnobreak\endcsname{\def\pexa@cverb@@space{\char32 \pexa@cverb@skipbreak@i}}% visible in \tt, nonbreakable +\expandafter\def\csname pexa@opt@@pverb-space@visbreak\endcsname {\def\pexa@cverb@@space{\hskip\z@skip\char32 \hskip\z@skip\pexa@cverb@skipbreak@i}}% visible in \tt, breakable +\expandafter\let\csname pexa@opt@@pverb-space\endcsname\hfuzz +% +\expandafter\def\csname pexa@opt@@pverb-hash@full\endcsname{\def\pexa@default@fullhash{1}}% +\expandafter\def\csname pexa@opt@@pverb-hash@half\endcsname{\def\pexa@default@fullhash{0}}% +\expandafter\let\csname pexa@opt@@pverb-hash\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@pverb-hyphenchar@char'30\endcsname {\def\pexa@cverb@@hyphenchar{\hyphenchar\font=\string'30 }}% allow auto-hyphenation of words +\expandafter\def\csname pexa@opt@@pverb-hyphenchar@hyphen\endcsname {\def\pexa@cverb@@hyphenchar{\hyphenchar\font=\string`-}}% allow auto-hyphenation of words +\expandafter\def\csname pexa@opt@@pverb-hyphenchar@none\endcsname {\def\pexa@cverb@@hyphenchar{\hyphenchar\font=-1 }}% disallow auto-hyphenation of words +\expandafter\def\csname pexa@opt@@pverb-hyphenchar@unchanged\endcsname{\def\pexa@cverb@@hyphenchar{}}% keep default \hyphenchar\font +\expandafter\let\csname pexa@opt@@pverb-hyphenchar\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@listings-verbatimfont@ttfamily\endcsname {\def\pexa@@listingsfont{\ttfamily}}% +\expandafter\def\csname pexa@opt@@listings-verbatimfont@pexavf\endcsname {\def\pexa@@listingsfont{\pexa@@verbatimfont}}% +\expandafter\def\csname pexa@opt@@listings-verbatimfont@latexvf\endcsname {\def\pexa@@listingsfont{\verbatim@font}}% +\expandafter\def\csname pexa@opt@@listings-verbatimfont@unchanged\endcsname {\def\pexa@@listingsfont{}}% +\expandafter\def\csname pexa@opt@@listings-verbatimfont@normalfont\endcsname{\def\pexa@@listingsfont{\normalfont}}% +\expandafter\let\csname pexa@opt@@listings-verbatimfont\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@pverb-verbatimfont@ttfamily\endcsname {\def\pexa@cverb@@verbatimfont{\ttfamily}}% +\expandafter\def\csname pexa@opt@@pverb-verbatimfont@pexavf\endcsname {\def\pexa@cverb@@verbatimfont{\pexa@@verbatimfont}}% +\expandafter\def\csname pexa@opt@@pverb-verbatimfont@latexvf\endcsname {\def\pexa@cverb@@verbatimfont{\verbatim@font}}% +\expandafter\def\csname pexa@opt@@pverb-verbatimfont@unchanged\endcsname{\def\pexa@cverb@@verbatimfont{}}% +\expandafter\def\csname pexa@opt@@pverb-verbatimfont@normalfont\endcsname{\def\pexa@cverb@@verbatimfont{\normalfont}}% +\expandafter\let\csname pexa@opt@@pverb-verbatimfont\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@source-verbatimfont@ttfamily\endcsname {\def\pexa@default@verbatimfont{\ttfamily}}% +\expandafter\def\csname pexa@opt@@source-verbatimfont@pexavf\endcsname {\def\pexa@default@verbatimfont{\pexa@@verbatimfont}}% +\expandafter\def\csname pexa@opt@@source-verbatimfont@latexvf\endcsname {\def\pexa@default@verbatimfont{\verbatim@font}}% +\expandafter\def\csname pexa@opt@@source-verbatimfont@unchanged\endcsname{\def\pexa@default@verbatimfont{}}% +\expandafter\def\csname pexa@opt@@source-verbatimfont@normalfont\endcsname{\def\pexa@default@verbatimfont{\normalfont}}% +\expandafter\let\csname pexa@opt@@source-verbatimfont\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@pverb-linebreak@char\endcsname{\def\pexa@cverb@@tbreak{\PexaAllowBreak}}% +\expandafter\def\csname pexa@opt@@pverb-linebreak@yes\endcsname {\def\pexa@cverb@@tbreak{\allowbreak}}% allow silent line break +\expandafter\def\csname pexa@opt@@pverb-linebreak@no\endcsname {\def\pexa@cverb@@tbreak{}}% disallow line break +\expandafter\let\csname pexa@opt@@pverb-linebreak\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@pverb-linebreakchar\endcsname#1{\def\pexa@cverb@@tbreakchar{#1}}% +\expandafter\def\csname pexa@opt@@pverb-stretchshrink@unchanged\endcsname{\def\pexa@cverb@@stretchshrink{}}% keep default +\expandafter\def\csname pexa@opt@@pverb-stretchshrink@yes\endcsname {\def\pexa@cverb@@stretchshrink{\fontdimen3\font=0.166666666\fontdimen6\font\relax \fontdimen4\font=0.111111111\fontdimen6\font\relax}}% Dat: \fontdimen6 is quad +\expandafter\def\csname pexa@opt@@pverb-stretchshrink@no\endcsname {\def\pexa@cverb@@stretchshrink{\fontdimen3\font=\z@ \fontdimen4\font=\z@}}% disallow line break +\expandafter\let\csname pexa@opt@@pverb-stretchshrink\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@baseline-grid@yes\endcsname {\def\pexa@default@baselinegrid{1}}% +\expandafter\def\csname pexa@opt@@baseline-grid@no\endcsname {\def\pexa@default@baselinegrid{0}}% +\expandafter\let\csname pexa@opt@@baseline-grid\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@mp-equation-reset@yes\endcsname {\def\pexa@@equation{}}% +\expandafter\def\csname pexa@opt@@mp-equation-reset@no\endcsname {\def\pexa@@equation{equation}}% +\expandafter\let\csname pexa@opt@@mp-equation-reset\endcsname\hfuzz +% vvv reset auxilary \newcounter{vrcnt} defined by varioref.sty to zero? Recommended: no. +\expandafter\def\csname pexa@opt@@mp-varioref-reset@yes\endcsname {\def\pexa@@vrcnt{}}% +\expandafter\def\csname pexa@opt@@mp-varioref-reset@no\endcsname {\def\pexa@@vrcnt{vrcnt}}% +\expandafter\let\csname pexa@opt@@mp-varioref-reset\endcsname\hfuzz +\expandafter\def\csname pexa@opt@@vrule@rule\endcsname{\def\pexa@@vrule{\pexa@vrule@rule}}% +\expandafter\def\csname pexa@opt@@vrule@skip\endcsname{\def\pexa@@vrule{\pexa@vrule@skip}}% +\expandafter\def\csname pexa@opt@@vrule@none\endcsname{\def\pexa@@vrule{\pexa@vrule@none}}% +\expandafter\let\csname pexa@opt@@vrule\endcsname\hfuzz + +% --- + +\def\PexaAllowBreak{% + \nobreak\hskip\z@skip % Dat: why this?? + %\penalty\hyphenpenalty% Dat: this is completely wrong here, because it + % allows a line break at the \penalty. TeX will insert \hyphenpenalty or + % \exhyphenpenalty automatically. + \discretionary{\hbox{\pexa@cverb@@tbreakchar}}{}{}\nobreak\hskip\z@skip} + +%** `\begin{PSource}[srcstyle=leftboth]' is an alternative of +%** `\begin{WBoth}...\PexaShowBoth'. The former allows page breaks between +%** lines, but uses the non-\catcode-based \PVerb. +\def\PexaShowBoth#1{% + \clubpenalty\@clubpenalty % allow club lines after \paragraph{x}y\par + \begingroup + \pexa@doopts{#1}% + \expandafter\@temptokena\expandafter{\pexa@default@samplewidth}% + \edef\reserved@a{\noexpand\PexaShowBothMany + {\the\@temptokena}% 1 + {\pexa@default@xalign}% 2 + {\pexa@default@yalign}% 3 + {\pexa@default@boxstyle}% 4 + {\pexa@default@allowshrink}% 5 + {\pexa@default@allowbreak}% 6 + {\pexa@default@srcstyle}% 7 + {\pexa@default@usewidth}% 8 + {{\pexa@default@xindent}{\pexa@default@yindent}}% 9 + }% + %%\show\reserved@a + %\expandafter\endgroup\reserved@a + \reserved@a + \endgroup% BUGFIX: makes \pexa@doopts have effect +}% +\def\pexa@xyindent#1#2{% + %\expandafter\show\csname pexa@doyindent@#2\endcsname + \let\pexa@@oncedeeper\pexa@movedeeper + \csname pexa@doyindent@#2\endcsname + \vskip\z@skip% do this after doyindent, so \@trivlist\ifvmode might decide about \@partopskip + \csname pexa@doxindent@#1\endcsname +} + +%** This command is for internal use only. Use \PexaShowBoth instead. +%** Shows the Source (to the left) and the Sample (to the right), facing, in +%** the specified style. +%** @param #1 dimen: width of Sample (\hsize, paragraph width). +%** Example: .4\hsize or .4\PexaWidth +%** @param #2 Sample horizontal alignment: `l' is left; `r' is right. `r' +%** almost always makes sense only with #4=`h' +%** @param #3 vertical alignment of Sample and Source: `b': align top +%** baselines. `u': align upper bounding box lines +%** @param #4 boxing style of Sample, see at \PexaShowSampleMany. +%** Capital letters disallowed. +%** @param #5 `1': allow Sample to shrink if Source is too wide, `0': don't +%** @param #6 `1': allow page break in Source, `0': don't +%** @param #7 source display style, see possible values at \PexaShowSource +%** @param #8 width selector, see docs at \PexaShowSource +%** @param #9 {{xindent}{yindent}} +%** Special one-pass case for #5=`1', #6='0' etc. +\def\PexaShowBothMany#1#2#3#4#5#6#7#8#9{% + \begingroup + %\hrule + \let\pexa@optboxstyle@noboth\pexa@optboxstyle@inboth + \csname pexa@opt@@boxstyle@#4\endcsname% verify correct usage + \pexa@setupverb@read% interpret ^ for measurements + % Dat: not late to test \ifvmode now + \pexa@xyindent#9% + % ^^^ do this early, so <measuring> will have a chance to measure correct width + % Now: We have \leftskip, \rightskip, \linewidth and \@totalleftmargin + % set up. These won't affect the sample, because \pexa@setsample@... + % calls \pexa@hsizesetup, which zero them all out. + \pexa@setup@calcwidths{#8}% sets \PexaWidth and possibly clobbers \@tempdimb + % Dat: \pexa@setup@calcwidths might have said \let\PexaWidth\@tempdimb, + % which isn't safe, so we want to expand it + % Dat: safe to clobber \@tempdima and \@tempdimb, we're in \begingroup + \@tempdimb\PexaWidth\relax + \let\PexaWidth\@tempdimb + \@tempdima#1\relax% do arithmetic: .5\PexaWidth + \edef\PexaWidth{\the\@tempdimb\space}% + \expandafter\pexa@showbothmany@low\expandafter{\the\@tempdima}{#2}{#3}{#4}{#5}{#6}{#7}% +} +\def\pexa@showbothmany@low#1#2#3#4#5#6#7{% + \if#2r\if#4h\else\PackageError{examplep}{xalign=r has no effect without boxstyle=h}\@ehc\fi\fi + % Dat: #1 might be .5\PexaWidth + %\ifx\pexa@default@listings\relax\else + % % Imp: find the reason of the \catcode problems + % \PackageError{examplep}{Package listings not supported when reading back from file}\@ehc + % \let\pexa@default@listings\relax + %\fi + \if#50% Don't allow the sample to shrink. Its width will be exactly #1. + \@tempdima#1\relax + \else% <measuring> + % #5 allows the Sample to shrink. Now we call \pexa@sh@#7 just to measure + % the width of the Source. From that we will be able to deduce the width of + % the Sample. + \@tempdima\PexaWidth + %\showthe\tabskip + % vvv This is the first time we call \pexa@default@verbatimfont + \setbox0\vtop{\leftskip\z@skip \@totalleftmargin\z@ \let\pexa@@tolinewidth\@empty + \pexa@setup@listings + \csname pexa@sh@#7\endcsname}% + %%\vbox{\hrule\copy0\hrule}% + \advance\@tempdima-\wd0 \setbox0\box\voidb@x + \setbox1\hbox{\pexa@@vrule{}}\advance\@tempdima-\wd1 + \ifdim#1<\@tempdima \@tempdima#1\relax\fi + %%\@tempdima=200pt + \fi% </measuring> + % \advance\@tempdima\@totalleftmargin\advance\@tempdima\leftskip% !! Dat: a failed attempt to put the \vrule to the middle + %\edef\pexa@@samplewidth{\the\@tempdima}% superfluous + % Dat: now \@tempdima is actual Sample width + \if#60\def\pexa@@preamblecr{\cr\noalign{\nobreak}}% disallow page break in Source + \else\let\pexa@@preamblecr\pexa@preamblecr@keep\fi + \edef\reserved@a{\catcode`^7\relax% change \catcode back to superscript (undo \pexa@setupverb@read) + \setbox1\expandafter\noexpand\csname pexa@setsample@#4\endcsname{\the\@tempdima}}% + \edef\reserved@b{% + %\noexpand\pexa@xyindent#9% + % Dat: too late to \noexpand\verbfwr@default@acts + \noexpand\pexa@setupverb@read% do correct display + \noexpand\pexa@setup@savetabskip + %\def\no\pexa@default@verbatimfont{\bbbbb}% + \expandafter\noexpand\csname pexa@sa@#3\endcsname + {\if#2r\wd1\else\the\@tempdima\fi}% will expand \@tempdima early + % Dat: \pexa@setup@listings in \pexa@sa@... + \expandafter\noexpand\csname pexa@sh@#7\endcsname + }% + %\show\reserved@a% \catcode `^7\relax \setbox 1\pexa@setsample@p {184.9429pt}. + %\show\reserved@b% \pexa@setupverb@read \pexa@setup@savetabskip \pexa@sa@u {184.9429pt}\pexa@sh@leftnumhang + \expandafter\reserved@a\reserved@b + % ^^^ This \expandafter trick expands \@tempdima early + \pexa@@undoyindent + \pexa@endparenvgroup % Dat: group started in \PexaShowBothMany +} +%** \pexa@@undoyindent calls \endtrivlist, which sets \@endpetrue, and if we +%** are in an environment (such as \begin{PWSource}), \end calls \@doendpe, +%** which which sets up \par and \everypar, so an automatic \noindent can be +%** forced. +\def\pexa@endparenvgroup{% + \if@endpe\endgroup\@endpetrue\else\endgroup\@endpefalse\fi% see also \PexaShow +} +\def\pexa@setup@savetabskip{% + \begingroup + \pexa@@calcwidths + \edef\reserved@a{\def\noexpand\pexa@@savetabskip{\the\tabskip}}% + \expandafter\endgroup\reserved@a +} +\def\pexa@hsizesetup{% + % Imp: possibly zero out \@listdepth etc., but don't forget to set it back. + \leftskip\z@skip + \rightskip\z@skip + \textwidth\hsize + \linewidth\hsize + \columnwidth\hsize + \parshape\z@ + \@totalleftmargin\z@ + \@twocolumnfalse +} +\def\pexa@setsample@h#1{% + % Dat: _not_ \hbox to#1. But why?? + \hbox{\hsize#1\relax\pexa@hsizesetup\input\pexa@@samplename\space\par}% +} +\def\pexa@setsample@v#1{% + \vtop{\hsize#1\relax\pexa@hsizesetup\input\pexa@@samplename\space\par}% +} +\def\pexa@setsample@V#1{% + \vbox{\hsize#1\relax\pexa@hsizesetup\input\pexa@@samplename\space\par}% +} +\def\pexa@setsample@m#1{% + \hbox{% + \noindent\begin{minipage}[t]{#1}% + \input\pexa@@samplename\space\par + \end{minipage}% + }% +} +\def\pexa@setsample@p#1{% + \hbox{% + \noindent\begin{PexaMinipage}[t]{#1}% + \pexa@hsizesetup + \input\pexa@@samplename\space\par + \end{PexaMinipage}% + }% +} +\def\pexa@setsample@M#1{% + \hbox{% + \noindent\begin{minipage}[b]{#1}% + \pexa@hsizesetup + \input\pexa@@samplename\space\par + \end{minipage}% + }% +} +\def\pexa@setsample@P#1{% + % \def\pexa@@bpmp{\begin{PexaMinipage}} + % \expandafter\pexa@@bpmp\input\pexa@@samplename\space % doesn't work :-( + \hbox{% + \noindent\begin{PexaMinipage}[b]{#1}% + \pexa@hsizesetup + \input\pexa@@samplename\space\par + \end{PexaMinipage}% + }% +} +\def\pexa@setsample@G#1{\begingroup\hsize#1\relax\pexa@hsizesetup\input\pexa@@samplename\space\endgroup} + +%** Dat: height of \pexa@@vrule only depends on the height of the sample +%** @param #1 desired Sample width +%** @param #2 one of \pexa@sh@... +\def\pexa@sa@b#1#2{ + %\leftskip\z@ \rightskip\z@ \parshape\z@% Wrong. Too Early. + \vskip\z@skip + \def\pexa@@cnta{0}% + \@tempdima\dp1 % not modified by \pexa@show@halign + \advance\@tempdima\baselineskip + \setbox0\hbox{\pexa@@vrule{}}% + \@tempdimc\PexaWidth \advance\@tempdimc-\wd0 \advance\@tempdimc-#1\relax %\advance\linewidth\tabskip + \edef\pexa@@savetabskip{\the\@tempdimc\space}% + \def\pexa@@firstlinebeg{% + \vadjust{\kern\dp1 \hrule\@height\z@\vskip-\dp1 }% ensure that figure fits + \vtop to\z@{\hb@xt@\z@{\kern\pexa@@savetabskip + \@tempdima\dp1 \advance\@tempdima\ht1 + \lower\dp1\hbox{\expandafter\pexa@@vrule\expandafter{\the\@tempdima}}% + \box1 \hss}\vss}% Dat: \hb@xt@\z@ is needed + % ^^^ Dat: \@totalleftmargin and \leftskip takes place here (as part of initial \tabskip) + }% + \pexa@setup@listings + #2% \pexa@show@halign etc. + \advance\@tempdima\pexa@@cnta\baselineskip + % vvv Dat: a little less than \baselineskip, because \vtop has less?? + \advance\@tempdima-\baselineskip \advance\@tempdima\topskip + % vvv Dat: use \kern, not \vskip, so \unskip won't undo it + \ifdim\@tempdima>\z@ \kern\@tempdima\fi% display is longer than source + %%\message{Left=\pexa@@cnta} +} +%** \box1 already contains the Sample +%** @param #1 desired Sample width +%** @param #2 one of \pexa@sh@... +\def\pexa@sa@u#1#2{% + % Dat: yalign=u and yalign=v differ when a vertical item in Source+Sample is + % too wide (they have different effect on the \hrule below) + %%\show\pexa@@tolinewidth \showthe\PexaWidth + %%\tracingcommands1 \tracingmacros1 + \vskip\z@skip% go to vertical mode + \edef\pexa@@restore@prevdepth{\prevdepth\the\prevdepth}% + \def\pexa@@cnta{0}% + %\@tempdima\dp1 \advance\@tempdima10.54352pt \dp1\@tempdima + \@tempdima\dp1 \advance\@tempdima\ht1 + \if1\pexa@default@baselinegrid + \ifdim\@tempdima<256\baselineskip\else \advance\@tempdima-256\baselineskip\fi + \ifdim\@tempdima<128\baselineskip\else \advance\@tempdima-128\baselineskip\fi + \ifdim\@tempdima <64\baselineskip\else \advance\@tempdima -64\baselineskip\fi + \loop\ifdim\@tempdima>\z@ \advance\@tempdima-\baselineskip\repeat + \@tempdima-\@tempdima + \advance\@tempdima\dp1 \dp1\@tempdima + \fi + \@tempdima\dp1 \advance\@tempdima\ht1 + % !! sample might be too tall, try single-line samples: (??) + % \begin{WBoth}Foo\end{WBoth}\PexaShowBoth{}\PexaShowBoth + \nointerlineskip\vbox to\z@{% This \vbox screws up \vskip{}s at page break + \setbox0\hbox{\pexa@@vrule{}}% + % Dat: now we \advance\PexaWidth, but this won't affect #2, because + % advancement is inside a group + %\advance\PexaWidth-\wd0 \advance\PexaWidth-#1\relax + %\showthe\PexaWidth + \kern\baselineskip \kern-\topskip + \hbox{% implies \noindent + \kern\pexa@@savetabskip + \kern\PexaWidth \kern-\wd0 \kern-#1\relax + \@tempdima\dp1 \advance\@tempdima\ht1 + \lower\dp1\hbox{\expandafter\pexa@@vrule\expandafter{\the\@tempdima}}% + %\pexa@@vrule + \box1% Dat: \box0 would emit a rule not tall enough + }% + \vss + }% + \pexa@@restore@prevdepth% let baselines align smoothly + \nobreak % disallow page break between Sample and Source + \pexa@setup@listings + #2% \pexa@sh@..., which calls \pexa@show@halign etc. + % Dat: now \pexa@@cnta is -1 times nr of source lines printed + % vvv Dat: a little less than \baselineskip, because \vtop has less?? + % Imp: even less + \advance\@tempdima\pexa@@cnta\baselineskip + % vvv Dat: use \kern, not \vskip, so \unskip won't undo it + \ifdim\@tempdima>\z@ \kern\@tempdima\fi% Sample is longer than Source + %%\message{Left=\pexa@@cnta} +} + +%** Similar to \vskip#1\relax, but adds #1 to \lastskip +%** Dat: not used anymore +\def\PexaAddlastskip#1{% + \begingroup + % Imp: try \unpenalty somehow so \lastskip won't be 0pt after \vskip10pt\nobreak + \@tempskipa=#1\relax + \advance\@tempskipa\lastskip + \vskip-\lastskip + \vskip\@tempskipa + \endgroup% Dat: \lastskip survives +} + +\def\pexa@default@vextravskip{\z@} +\def\pexa@default@vsmallht{1pt} +%** Like \pexa@sa@u, but works at a page break with baseline grid +%** \box1 already contains the Sample. +%** @param #1 desired Sample width +%** @param #2 one of \pexa@sh@... +\def\pexa@sa@v#1#2{% + %%\setbox1\hbox{\vrule\box1}% + %%\show\pexa@@tolinewidth \showthe\PexaWidth + %%\tracingcommands1 \tracingmacros1 + \ifhmode\unskip\par\fi% go to vertical mode, keep \lastskip + %\show\pexa@default@vextravskip + \ifdim\prevdepth>-\@m\p@ + \@tempdima\prevdepth \advance\@tempdima-\pexa@default@vextravskip\relax + \prevdepth\@tempdima + \vskip-\pexa@default@vextravskip\relax% !! \vspace etc. + \fi + \def\pexa@@cnta{0}% + %\@tempdima\dp1 \advance\@tempdima10.54352pt \dp1\@tempdima + \def\pexa@@thefirstline{}% + \setbox0\hbox{\pexa@@vrule{}}% + \@tempdimc\PexaWidth \advance\@tempdimc-\wd0 \advance\@tempdimc-#1\relax %\advance\linewidth\tabskip + \edef\pexa@@savetabskip{\the\@tempdimc\space}% + \def\pexa@@dohalign{% + \noalign\bgroup + %\pexa@@beforefirstline% called after the \cr of the preamble, should contain \noalign{...} + %\relax\pexa@setupverb@read% Dat: already called + % vvv Dat: \@@input is the original \input primitive, which we definitely + % need here (and not a macro) + \expandafter\pexa@inputfirstline\@@input\pexa@@cursourcename\space + % ^^^ Dat: \relax instead of \space would begin an extra line and demand + % an extra \cr (at end) + \egroup% terminate \halign + }% + \global\def\pexa@@vdepth{\z@}% + \global\let\pexa@@thefirstline\@empty + \def\pexa@@firstlinebeg{% + \setbox0=\hbox{\pexa@@thefirstline}% Source + \@tempdima\ht0 + \advance\@tempdima\pexa@default@vextravskip\relax + \ifnum1<1% + \ifdim\ht1<\pexa@default@vsmallht\relax1% typical: \ht1 (Sample) is 0pt or 0.4pt + \else\ifdim\@tempdima<\ht1 1\fi\fi% Sample (\box1,\vtop) is a lot higher than the 1st line of Source + \space + % Dat: now we raise Sample to the height of Source (should this be \strut??) + % Dat: in lb.sty: \ht0=7.14pt and \ht0=9.10pt + \advance\@tempdima-\ht1 + % Dat: this example shows that \raise correctly shifts \ht and \dp + % \setbox0=\hbox{\vrule height 30pt depth50pt} + % \setbox0=\hbox{\raise6pt\box0} + % \showthe\ht0 \showthe\dp0 + \setbox1\hbox{\raise\@tempdima\box1}%\raise10pt\box1}% + \fi + % vvv Dat: save new \dp1, as \raise{}d above + % vvv Dat: we need \global because we are in a \halign + \global\edef\pexa@@vdepth{\the\dp1}% + % Dat: we don't need \@tempdima anymore + %%\vrule height\ht0 depth\dp0 width1pt + \vadjust{\kern\dp1 \hrule\@height\z@\vskip-\dp1 }% ensure that Sample fits page; Imp: make this proper, don't allow page break etc. + \vtop to\z@{\hb@xt@\z@{\kern\pexa@@savetabskip + \@tempdima\dp1 \advance\@tempdima\ht1 + \lower\dp1\hbox{\expandafter\pexa@@vrule\expandafter{\the\@tempdima}}% + \box1 \hss}\vss}% Dat: \hb@xt@\z@ is needed + % ^^^ Dat: \@totalleftmargin and \leftskip takes place here (as part of initial \tabskip) + \global\let\pexa@@thefirstline\@empty + }% + %%\hrule + \pexa@setup@listings + #2% \pexa@sh@..., which calls \pexa@show@halign etc. + \ifx\pexa@@undoyindent\@empty + \@tempdimc\z@ + \else + \@tempdimc\@topsepadd + \fi + \ifdim\@tempdimc>\pexa@default@vextrabotdepth\relax + \@tempdimc\pexa@default@vextrabotdepth\relax + \fi + % Dat: now \@tempdimc is the extra Sample depth that can be tolerated. + % This can be quite much (>50pt etc.) + \@tempdima\pexa@@vdepth\relax% depth of the Sample + % Dat: now \pexa@@cnta is -1 times nr of source lines printed + \if1\pexa@default@baselinegrid + \advance\@tempdima\pexa@@cnta\baselineskip + \advance\@tempdima\baselineskip% don't count the first line + \ifdim\@tempdima<\@tempdimc % Source is tall enough, no \vskip needed + \@tempdima\z@ + \else + \ifdim\@tempdima<256\baselineskip\else \advance\@tempdima-256\baselineskip\fi + \ifdim\@tempdima<128\baselineskip\else \advance\@tempdima-128\baselineskip\fi + \ifdim\@tempdima <64\baselineskip\else \advance\@tempdima -64\baselineskip\fi + \loop\ifdim\@tempdima>\@tempdimc \advance\@tempdima-\baselineskip\repeat + \@tempdima-\@tempdima + \advance\@tempdima\pexa@@vdepth\relax + \advance\@tempdima\pexa@@cnta\baselineskip% BUGFIX at Fri Apr 16 00:56:52 CEST 2004 + \advance\@tempdima\baselineskip + \fi + % vvv Dat: this would force a better page break, but might be dangerous + %\ifx\pexa@@undoyindent\@empty\else + % \advance\@tempdima\@tempdimc + % \advance\@topsepadd-\@tempdimc + %\fi + \else + % This usually has no effect, except only with a single-line \vtop Sample + \advance\@tempdima\pexa@@cnta\baselineskip% negative + \advance\@tempdima\baselineskip% don't count the first line + \advance\@tempdima-\@tempdimc + \ifdim\@tempdima<\z@ \@tempdima\z@\fi + \fi + % vvv Dat: this \vskip will be extended by \addvspace + % vvv Dat: reset \lastskip to zero if \@tempdima=0pt + \ifdim\@tempdima<\z@\else \nobreak\vskip\@tempdima\fi% Sample is longer than Source + \global\let\pexa@@thefirstline\@empty + \global\let\pexa@@vdepth\@empty + %%\message{Left=\pexa@@cnta} +} +\begingroup\lccode`~=`\^^M\lowercase{\endgroup\def\pexa@inputfirstline#1~{% + \global\def\pexa@@thefirstline{#1}% + % ^^^ Dat: \global is needed, because we're in \halign + %%\show\pexa@@thefirstline + \egroup% \noalign + #1~% Put it back so it will be typeset; BUGFIX: changed \par to ~ here +}} + +% --- + +% Dat: superfluous macros +%\def\PexaShowSourceLeft {\PexaShowSource{left}}% +%\def\PexaShowSourceCenter {\PexaShowSource{center}}% +%\def\PexaShowSourceNumLeft{\PexaShowSource{leftnum}}% +%\def\PexaShowSourceNumCol {\PexaShowSource{leftnumcol}}% +%\def\PexaShowSourceNumHang{\PexaShowSource{leftnumhang}}% +%\def\PexaShowPexaMinipage {\PexaShowSample{\hsize}{P}}% +%\def\PexaShowSourceSampleLeft{\PexaShowBoth{#1}{l}{b}{v}{0}{1}{left}{2}} +%\def\PexaShowSourceSampleRight{\PexaShowBoth{#1}{r}{b}{v}{0}{1}{left}{2}} +%\def\PexaShowSourceSampleLeftPexaMinipage{\PexaShowBoth{#1}{l}{b}{p}{0}{1}{left}{2}} + +%** Shows the source and the sample, facing, both left flushed, top baselines +%** aligned, disallowing page break, width of sample maximized so both source +%** and sample fit. +%** Deprecated. Use \PexaShowBoth with #1 \hsize-..., #6=0 +%** @param #1 dimen: minimum width for the source (hint: specify 0pt) +%** Uses \pexa@@vrule +%** Imp: pre-calculate width of \pexa@@vrule +%** Imp: typeset the source once +%\def\PexaShowSourceSampleFit#1{% +% \vskip\z@skip +% \setbox0\vtop{\pexa@show@halign}% +% \ifdim\wd0<#1 \wd0=#1\fi +% \setbox1\vtop{% +% \advance\hsize-\wd0 +% \setbox0\hbox{\pexa@@vrule{}}\advance\hsize-\wd0 +% \input\pexa@@cursourcename\space +% }% +% \noindent\box0 \pexa@@vrule{}\relax\box1\par +%} + +% --- \begin{PexaMinipage} + +\let\pexa@@restore\empty +%** @param #1 something whose 1st token will be expanded once +\def\pexa@restore@appendex#1{% + \expandafter\expandafter\expandafter\def + \expandafter\expandafter\expandafter\pexa@@restore + \expandafter\expandafter\expandafter{% + \expandafter\pexa@@restore#1}% +} + +\def\pexa@@equation{equation} +\def\pexa@@vrcnt{vrcnt} + +%** @param #1 counter name; e.g `section' means \c@section +%** @param #2 true code +%** @param #2 false code +\def\pexa@ifignore#1#2#3{% + % Imp: multiple ignorable counters + \def\reserved@b{#1}% + \ifx\reserved@b\pexa@@equation#2% + \else\ifx\reserved@b\pexa@@vrcnt#2% + \else#3\fi\fi +} + +%** Appends a counter restoration command to \reserved@a +%** @param #1 counter name; e.g `section' means \c@section +\def\pexa@elt#1{% + \pexa@ifignore{#1}{}{% + \edef\reserved@a{\noexpand\setcounter{#1}{\the\csname c@#1\endcsname}}% + \pexa@restore@appendex\reserved@a + }% +} +%** @param #1 counter name; e.g `section' means \c@section +\def\pexa@resetcounter#1{% + \pexa@ifignore{#1}{}{% + \expandafter\global\csname c@#1\endcsname\z@ + }% + %\begingroup% superfluous + % \let\@elt\@stpelt + % \csname cl@#1\endcsname + %\endgroup +} +%\def\pexa@minipage@setcounter{% overrides latex.ltx +% \@ifundefined{c@#1}% +% {\@nocounterr{#1}}% +% {\pexa@elt{#1}\global\csname c@#1\endcsname#2\relax}} + +\long\def\pexa@kill@minipagefalse#1\@minipagefalse#2\hfuzz${#1} +%** A dumb emulation of article.cls: displays the page footer. +\def\pexa@finishpage{% + \begingroup + \expandafter\pexa@kill@minipagefalse\endminipage\hfuzz$% + % ^^^ stop after footnotes at \@minipagefalse + \let\relax\relax% elminate possible \global before \@minipagefalse + \endgroup + \ifhmode\unskip\par\fi %\vskip\z@skip + \pexa@@saved@newpage + \ifhmode\unskip\par\fi %\vskip\z@skip + \unpenalty\unskip + \stepcounter{page}% 0 -> 1 + \ifx\@oddfoot\@empty\else% \pagestyle{empty} -> \let\oddfoot\@empty + \bigskip + \begingroup + \if@specialpage + \global\@specialpagefalse\@nameuse{ps@\@specialstyle}% define \@evenfoot + \fi + \hbox to\hsize{\if@twoside\ifodd \@oddfoot\else \@evenfoot\fi\else\@evenfoot\fi}% + \endgroup + \fi +} +\def\pexa@newpage{% + \pexa@finishpage + \global\let\pexa@@finishlastpage\pexa@finishpage + \smallskip\hrule\smallskip +} + +\def\pexa@everydisplayfirst#1{% + \everydisplay{#1}% + \abovedisplayshortskip\z@skip \abovedisplayskip\z@skip + #1% +} + +%** \begin{PexaMinipage} is similar to \begin{minipage} (and accepts the same +%** args), but section etc. +%** counters (including \thepage) will restart, and their previous values are +%** restored at \end{PexaMinipage}. Also \mark and \@themark are restored. +%** Footnotes are numbered normally. The first paragraph is set with \noindent, +%** but subsequent ones are indented. Skips (including \belowdisplayskip) are +%** canceled at the bottom of the page. \abovedisplayskip above the very first +%** displayed formula is canceled; you can avoid this by saying \everydisplay{} +%** before the formula. +%** A space after \end{PexaMinipage} (as with minipage) is significant. +%** +%** Usage: \begin{PexaMinipage}[vert-alignment]{width}, just like the minipage +%** environment. +%** +%** Example: +%** \begin{PexaMinipage}{99pt} +%** \hrule\relax +%** \selectlanguage{english} +%** \section{mp-foo} +%** Aword\footnote{a hello, world} +%** Bword\footnote{b hello, world} +%** \end{PexaMinipage} +%** \hrule +\def\PexaMinipage{% + \begingroup + \let\pexa@@restore\@empty + \let\@elt\pexa@elt \cl@@ckpt % append `\setcounter{equation}{42}' to \pexa@@restore + \let\c@footnote\c@mpfootnote% don't reset original \c@footnote; BUGFIX at Tue Dec 23 18:46:30 CET 2003 + \let\c@footnote@ch\c@mpfootnote% don't reset footnote generation counter -- for magyar.ldf + \let\@elt\pexa@resetcounter \cl@@ckpt + \pexa@restore@appendex{\expandafter\gdef\expandafter\@themark\expandafter{\@themark}}% + \edef\reserved@a{\noexpand\global\if@specialpage\noexpand\@specialpagetrue\else\noexpand\@specialpagefalse\fi}\pexa@restore@appendex\reserved@a + \if@specialpage\edef\reserved@a{\gdef\noexpand\@specialstyle{\@specialstyle}}\pexa@restore@appendex\reserved@a\fi + \expandafter\endgroup\expandafter\def\expandafter\pexa@@restore\expandafter{\pexa@@restore}% + %\show\pexa@@restore + % Dat: \selectlanguage is restored automatically + % Dat: \c@mpfootnote is reset to zero each time + %\let\c@footnote\c@mpfootnote + \def\thempfootnote{\thefootnote}% show normal footnotes (`1') instead of `a' + \let\c@mpfootnote\c@footnote + \let\cl@mpfootnote\cl@footnote% magyar.ldf footnote renumbering compatibility + \pexa@elt{secnumdepth}% + \let\pexa@@saved@newpage\newpage + \let\newpage\pexa@newpage% override + \let\finishpage\pexa@finishpage% new command + \let\pexa@@finishlastpage\@empty + \let\addtocontents\@gobbletwo + % ^^^ Don't modifty the TOC etc. of the host document. \addcontentsline isn't + % redefinied, because hyperref.pdf overrides the number of args + \expandafter\ifx\csname chapter\endcsname\relax + % Doesn't modify section numbering etc. + \let\chaptermark\@gobble + \let\p@chapter\@empty + \newcount\c@chapter%\newcounter{chapter}% \newcounter wouldn't allow redef + \def\chapter{\@startsection{chapter}{0}{\z@ }{-3.5ex \@plus -1ex \@minus -.2ex}{2.3ex \@plus .2ex}{\normalfont \Large \bfseries}}% + % ^^^ copied article.cls definition for section + \def\thechapter{\@Roman\c@chapter}% + \fi + %\aftergroup\pexa@@restore% no effect, because \pexa@@restore will have been changed back by \endgroup + % vvv Modify latex.ltx to avoid \parindent\z@ + \def\@parboxrestore{% + \edef\reserved@a{\noexpand\@arrayparboxrestore\parindent\the\parindent\relax}% + \reserved@a \let\\\@normalcr}% + \def\@setminipage{% + \@minipagetrue + \everypar{% + {\setbox\z@\lastbox}% cancel \indent + \@minipagefalse\everypar{}% + }}% + \expandafter\everydisplay\expandafter{% + \expandafter\abovedisplayskip\expandafter\z@skip% for gridmath.sty + \expandafter\pexa@everydisplayfirst\expandafter{\the\everydisplay}}% + \@listdepth\z@ % Imp: put this into \PexaShowBoth etc. + \def\makelabel##1{% + \@latex@error{Lonely \string\item--perhaps a missing + list environment}\@ehc}% + % vvv with `Figure 1' (article)-style figure numbering + \def\figure{\pexa@mp@fakefloat{figure}}% + \let\endfigure\pexa@mp@endfloat + \def\table{\pexa@mp@fakefloat{table}}% + \@namedef{table*}{\table}\@namedef{endtable*}{\endtable}% + \@namedef{figure*}{\figure}\@namedef{endfigure*}{\endfigure}% + % ^^^ BUGFIX at Mon Apr 19 17:08:49 CEST 2004: + % need to redefine \endtable*, too; problem caused by \marginpar in a + % very different part of the document. + \let\endtable\pexa@mp@endfloat + \pexa@@minipage@setuphook + \minipage% accept args etc. +} +\def\endPexaMinipage{% + \pexa@@finishlastpage + \par\unskip% cancels \belowdisplay(short)skip and others + \unpenalty\unskip\unpenalty\unskip\unpenalty\unskip\unpenalty + % ^^^ Dat: `\unskip\unpenalty\unskip' cancels \bigskip + % + \let\c@mpfootnote\@tempcnta + \let\cl@footnote\@empty + \let\cl@mpfootnote\@empty + %\show\pexa@@restore + %\let\c@mpfootnote\c@secnumdepth% restoring of \cl@@ckpt will be overridden later + %\let\c@footnote\c@secnumdepth + %\showthe\count63 + \pexa@@restore% will not reset original \c@footnote + %\global\c@footnote=77 + %\setcounter{footnote}{77} + \expandafter\@temptokena\expandafter{\@themark}% + \mark{\the\@temptokena}% prevent double expansion of \@themark + \endminipage +} + +\def\pexa@mp@fakefloat#1{\@ifnextchar[{\pexa@mp@begfloat{#1}}{\pexa@mp@begfloat{#1}[]}} +\def\pexa@mp@begfloat#1[#2]{% + \def\@captype{#1}% figure or table + % vvv ripped from \@xfloat in latex.ltx + %\global \setbox\@currbox + \vskip\intextsep + \color@vbox + \normalcolor + \vbox \bgroup + \hsize\columnwidth + \@parboxrestore + \@floatboxreset +} +\def\pexa@mp@endfloat{\@endfloatbox\vskip\intextsep}% + +\let\pexa@@minipage@setuphook\@empty +\def\pexa@mp@article{% + \@twosidefalse + \pagestyle{plain}% + \renewcommand\thepart {\@Roman\c@part}% + \renewcommand\thesection {\@arabic\c@section}% + \renewcommand\thesubsection {\thesection.\@arabic\c@subsection}% + \renewcommand\thesubsubsection{\thesubsection .\@arabic\c@subsubsection}% + \renewcommand\theparagraph {\thesubsubsection.\@arabic\c@paragraph}% + \renewcommand\thesubparagraph {\theparagraph.\@arabic\c@subparagraph}% +} + +% --- \PVerb et al. + +%** \PVerb is a command that typesets its argument verbatim, in a typewriter +%** font. It similar to the LaTeX \verb command, but has additional features: +%** -- \PVerb{NESTED} is allowed (as well as \PVerb+TEXT+), where NESTED must +%** have braces properly nested, but no other constraints are given +%** -- the only constraint on TEXT in \PVerb+TEXT+ is tht it cannot contain +%** the delimiter (+) +%** -- \PVerb{NESTED} can be put inside macro command arguments, for example: +%** \fbox{\PVerb{\def\foo{\csname bar\endcsname}}} +%** -- accented characters (with \usepackage[...]{inputenc}) work properly +%** -- accents \H and \. work even in OT1 encoding (the font cmr is +%** substituted if necessary) +%** -- customizable behaviour via options pverb-space=, pverb-hyphenchar=, +%** pverb-verbatimfont=, pverb-linebreak=, pverb-linebreakchar=, +%** pverb-stretchshrink= +%** -- options can be specified as \PVerb[...] or \PexaDefaults{...} +%** Some downsides: +%** -- a newline inside the argument of \PVerb is converted to a space +%** -- inner mode: comments are lost +%** -- inner mode: line breaks are lost (converted to spaces) +%** -- inner mode: multiple space tokens are condensed into one +%** -- inner mode: exact layout of space tokens after \cs are lost +%** -- inner mode: only \PVerb{NESTED} syntax is allowed +%** -- inner mode: only \PVerb[pverb-hash=half] works inside \textrm +%** -- inner mode: +%** Dat: \verb~...~ will work well, because it is forced to be outer. +%** Suggested brace delimiters: {} +%** Suggested other \dospecial delimiters: \ $ & # ^ _ % ~ +%** Suggested other delimiters: ` ! @ * - + = | : ; ' " < > , . / ? [] () +%** Dat: test: \showhyphens{\PVerb{kismocsok}} +\DeclareRobustCommand\PVerb{} +\expandafter\def\csname PVerb \endcsname{% + \relax\ifmmode\hbox\else\leavevmode%\null prevents break of 1st word + \fi\bgroup + {\pexa@cverb@@verbatimfont}% load .fd files with undisturbed \catcodes + \pexa@setupverb% sets \catcodes, similar to `\let\do\@makeother \dospecial\@noligs \@vobeyspaces' + \pexa@cverb@catcodes + \afterassignment\pexa@cverb@maybeopts\let\reserved@a= % +} +%** Same as \PVerb, but converts `##' to `#'. +%** @example \textit{And type: \PVerbH{##ifdef}} +\DeclareRobustCommand\PVerbH{\PVerb[pverb-hash=half]} +%** Usage: \PVerbInner\PVerb{text} or \PVerbInner\PVerbH{text} +\DeclareRobustCommand\PVerbInner[2]{#1{#2}} +%** \item[\PVerb[pverb-space=visbreak]{foo}] doesn't work because of the nested +%** `['. Use this instead: \item[\PVerbOpt{pverb-space=visbreak}{foo}], or: +%** \item[{\PVerb[pverb-space=visbreak]{foo}}] +\DeclareRobustCommand\PVerbOpt{} +\expandafter\def\csname PVerbOpt \endcsname#1{% + \relax\ifmmode\hbox\else\leavevmode%\null prevents break of 1st word + \fi\bgroup + \pexa@doopts{#1}% in \begingroup, at last + {\pexa@cverb@@verbatimfont}% load .fd files with undisturbed \catcodes + \pexa@setupverb% sets \catcodes, similar to `\let\do\@makeother \dospecial\@noligs \@vobeyspaces' + %% (\the\catcode\string``)% + \pexa@cverb@catcodes + \afterassignment\pexa@cverb@gottoken\let\reserved@a= + %\afterassignment\pexa@cverb@outerbrace\let\reserved@a= % +} + +\def\pexa@cverb@catcodes{% + \let\do\pexa@cverb@makemathshift \dospecials \pexa@cverb@donormals + % ^^^ converts allowed delimiters to math-shift (\catcode 3) + %\@tempcnta127 \loop\ifnum\@tempcnta<256 \catcode\@tempcnta3 \advance\@tempcnta\@ne\repeat + % ^^^ also allows \PVerbászá + \ifx\\\@tabularcr \catcode`\{1 \fi % is \realx with array.sty + \ifx\\\@arraycr \catcode`\{1 \fi % with array.sty + % ^^^ disable outerbrace mode for \begin{tabular}, because braces must be + % properly nested inside a \halign cell, so we are not allowed to swallow + % a brace as math-shift. Unfortunately, this doesn't fix the problem for + % pure \halign, for which `! Missing { inserted' will be shown. + % !! still doesn't work (inside tabular -- but \verb works): + % \begin{tabular}{@{}llllll@{}}\hline + % & outer& argument& tablular& elsewhere& escaped \\\hline + % \PVerb[]+\ve rb+ & + & -1 & + & -1 & no \\ + % \PVerb[]+\PVer}bOpt+ & + & +2 & +2 & -- & no \\ + % \PVerb[]+÷+ & + & +2 & +2 & +2 & no \\ + % \PVerb[]+\÷+ & + & + & + & + & yes \\ + % \PVerb[]+\Q+ & + & + & + & + & yes \\ + % % vvv ÷ doesn't work in tabular, fix it + % %z÷\verb÷ & + & -1 & + & -1 & no \\ + % %z÷\PVerbOpt÷ & + & +2 & +2 & -- & no \\ + % %z÷\Q÷ & + & + & + & + & yes \\ + % \÷\\ve\{rb÷ & + & -1 & + & -1 & no \\ + % \÷\\PVerbOpt÷ & + & +2 & +2 & -- & no \\ + % \÷\\Q÷ & + & + & + & + & yes \\ + % \hline + % \end{tabular} +} + +% Sentinel sensible defaults -- overridden by \pexa@doopts above. +\def\pexa@cverb@@space{\ }% breakable +\def\pexa@cverb@@hyphenchar{\hyphenchar\font=-1 }% disallow auto-hyphenation of words +\def\pexa@cverb@@verbatimfont{\pexa@@verbatimfont}% +\def\pexa@cverb@@tbreak{\allowbreak}% allow silent line break +\def\pexa@cverb@@stretchshrink{}% keep original + +%** Prepend a \do to every >=127 accented character. +%** Iteration terminated by \vfuzz. +%** Add \break statements if necessary +\def\pexa@cverb@addacc#1{% + \ifx\vfuzz#1\else + \ifnum`#1>126 \ifnum\catcode`#1=13 \noexpand\do\fi#1\else% prepend \do to accented character + \ifnum`#1=32 \noexpand\pexa@cverb@@space\else%\ifnum`#1<127 + \ifnum\catcode`#1=11 #1\else % Dat: add \break unless default \catcode is letter + % vvv Dat: add \break to both sides of any nonletter + \noexpand\break#1\noexpand\break\fi + \fi\fi + \expandafter\pexa@cverb@addacc + \fi +} + +\def\pexa@cverb@removespace@v#1 #2{% + #1\ifx\hfuzz#2\else + \ifnum\catcode\string`#2=11 \reserved@a\fi% keep space iff letter follows + #2\expandafter\pexa@cverb@removespace@v + \fi +} +%** Similar to \EempVerbatimDef5 in eempost.sty +%** Defines parameterless macro named #1 to expand to a verbatim +%** representation of token list #2, with only catcode 10 (space) and +%** catcode 12 (other). +%** -- `%' won't appear in the output +%** -- emits `\relax' as `\relax ', but `\<' as `\<' (without space) +%** -- comments etc. have already been removed +%** -- caller should end each line with `^^J%' +%** -- \cs containing non-letter chars are printed without caution +%** -- low (0..31) and high (127..256) chars will be emmited with ^^ +%** -- char 10 (^^J) will be emitted as newline +%** -- ^^A (1) chars will be converted to spaces +%** -- spaces in #1 are kept with catcode 12 (other possibilities: keep with +%** catcode 10; remove) +%** -- trailing spaces of `\cs ' are +%** removed unless necessary (a letter follows it), keep with catcode 12 +\long\def\pexa@cverb@vdef#1#2{% \long: allow \par in #2 + \begingroup + \@tempcnta0 \loop\ifnum\@tempcnta<256 \lccode\@tempcnta0 \advance\@tempcnta\@ne\repeat + \lccode\string`\ =1 + \lowercase{\toks@{#2}}% convert space to ^^A + \edef\reserved@a{\the\toks@}% convert `#' to `##' (catcode 6) + %\edef\reserved@b##1>{}% macro:...->... + \edef\reserved@b{\expandafter\strip@prefix\meaning\reserved@a\string##\hfuzz}% + % ^^^ Dat: \meaning expands to ^^A with catcode 12, because it's charcode isn't 32 + % vvv !! SUXX, changes 'a\#b' to `a\b', too + \edef\reserved@b{\expandafter\pexa@removehash\reserved@b}% convert `##' to `#' (catcode 12) + \lccode\string`\ =0 % keep spaces generated by `\cs...' + \lccode1=\string`\ % + \expandafter\lowercase\expandafter{\expandafter\edef\expandafter\reserved@b\expandafter{\reserved@b\space\hfuzz}}% convert `^^A' -> ` ' (catcode 12) + % Dat: now we have the space tokens in #1 with catcode 12, and spaces at the + % end of multi-letter `\cs ' with catcode 10 (space). + \lccode`\-=\string`\ \lowercase{\edef\reserved@a{-}}% Dat: assume catcode('-')==12 + \edef\reserved@b{\def\noexpand#1{\expandafter\pexa@cverb@removespace@v\reserved@b}}% + % ^^^ Dat: it is safe to call \eemp@removespace@v, because there will be + % no consecutive spaces in \reserved@b emitted by \meaning + \expandafter\endgroup\reserved@b +} + +%** Cancel \break{}s in the beginning of \reserved@a, and also cancel break after +%** the very first character. +\def\pexa@cverb@skipbreak@ii#1#2{% + \ifx#1\break + \pexa@swaprelax{\pexa@cverb@skipbreak@ii#2}% + %\expandafter\pexa@cverb@skipbreak\expandafter#2% + \else + \ifx#2\break + \pexa@swaprelax{\pexa@cverb@skipbreakf@ii#1}% + \else + \pexa@swaprelax{#1#2}% Dat: don't insert \relax into `\do ő' etc. + \fi% + \fi\relax +} +\def\pexa@cverb@skipbreakf@ii#1#2{% + \ifx#2\break + \pexa@swaprelax{\pexa@cverb@skipbreakf@ii#1}% + \else + \pexa@swaprelax{#1\relax#2}% Dat: \relax breaks ligatures + \fi\relax +} +%** Cancel \break{}s in the beginning of \reserved@a. +%** (formerly \pexa@cverb@eatbreaks) +\def\pexa@cverb@skipbreak@i#1{% + \ifx#1\break \expandafter\pexa@cverb@skipbreak@i + \else\expandafter#1\fi +} +%** Doesn't cancel \break. +\let\pexa@cverb@skipbreak@\@empty +%** Cancels break according to option pverb-leftbreakmin +\def\pexa@cverb@skipbreak{% + \relax% break ligatures + \csname pexa@cverb@skipbreak@\romannumeral\pexa@default@pverbleftbreakmin\endcsname +} + +%** Cancel a single break in the beginning of \reserved@a. +%\def\pexa@cverb@skipbreak#1{% +% \ifx#1\break\else\expandafter#1\fi +%} + +% Test. +%\def\pexa@default@pverbleftbreakmin{2}% see defaults below +%\edef\reserved@a{\pexa@cverb@skipbreak alma} +%\show\reserved@a +%\edef\reserved@a{\pexa@cverb@skipbreak\break\break alma} +%\show\reserved@a +%\tracingmacros1 +%\edef\reserved@a{\pexa@cverb@skipbreak\break a\break\break l\break ma} +%\show\reserved@a +%\tracingmacros0 \zzzz + +%** Typesets already verbatized contents of \reserved@a +%** @example \begingroup\makeatletter\pexa@cverb@vdef\reserved@a{#1}\pexa@cverb@typeset\endgroup +\def\pexa@cverb@typeset{% + \makeatother% make \@delfin@ablakban@ hyphenatable: \@ del-fin @ ab-lak-ban @ + \edef\reserved@a{\expandafter\pexa@cverb@addacc\reserved@a\vfuzz\noexpand\@empty}% + \pexa@cverb@typeset@low +} + +%** Also called by \pexa@nobackslash +\def\pexa@cverb@typeset@low{% + % ^^^ Dat: \@empty is for ##1 of a possible \break + %\showthe\hyphenchar\font + %%\show\reserved@a + \def\break##1{% + \ifx##1\@empty\else \ifx##1\pexa@cverb@@space\else% Dat: \ifx is slow + % ^^^ don't allow break before a space + % ^^^ ignore trailing break (followed by \@empty) + \pexa@cverb@@tbreak + \fi\fi + \ifx##1\break\else\expandafter##1\fi% gobble next token if it's \break + % ^^^ Dat: \break is a macro, so \ifx may be slow + % ^^^ Dat: we never ever have \break\break\break in \reserved@a + }% + % Imp: cancel \break if \pexa@cverb@@tbreak is \@empty + %** @param ##1 accented, \active char with catcode 12 + \def\do##1{\lccode`~`##1\lowercase{~}}% + %\pexa@cverb@@verbatimfont + %\pexa@cverb@@hyphenchar + %\showthe\hyphenchar\font + % vvv Restore modified font values at \egroup + % vvv Dat: it would be too early to restore \hyphenchar at the end of the + % group, because \hyphenchar is examined by TeX when the paragraph has + % to be broken to lines. + % The only solution I can think of for changing \hyphenchar locally + % is defining a font with a very similar size (see below). Unfortunately, + % dvips(1) embeds two different fonts. + % \font\f=cmr10 at 10pt + % \font\g=cmr10 at 10.00001pt + % \hyphenchar\f=99 + %\edef\reserved@b{\noexpand\pexa@aftergroup\noexpand\hyphenchar\the\font=\the\hyphenchar\font\relax\hfuzz}\reserved@b + \edef\reserved@b{\noexpand\pexa@aftergroup\noexpand\fontdimen3\the\font=\the\fontdimen3\font\relax\hfuzz}\reserved@b% normal stretch + \edef\reserved@b{\noexpand\pexa@aftergroup\noexpand\fontdimen4\the\font=\the\fontdimen4\font\relax\hfuzz}\reserved@b% normal shrink + %\show\pexa@cverb@@verbatimfont + %\showhyphens{irgumburgum id}% + \pexa@cverb@@verbatimfont + %\showhyphens{irgumburgum ie}% + \pexa@cverb@@hyphenchar + %\showhyphens{irgumburgum if}% + \pexa@cverb@@stretchshrink + %\showthe\hyphenchar\font + %\showhyphens{irgumburgum ig}% + %\showhyphens{\reserved@a}% + %\showhyphens{\tt\reserved@a}% + %\hyphenpenalty\z@ + %\expandafter\MINUSCHECK\reserved@a......\hfuzz% + \expandafter\pexa@cverb@skipbreak\reserved@a\@empty\@empty% Dat: \@empty is sentinel +} +%\def\MINUSCHECK#1#2#3\hfuzz{% +% \edef\reserved@b{\meaning#1}\show\reserved@b +% \edef\reserved@b{\meaning#2}\show\reserved@b +% \edef\reserved@b{\meaning#3}\show\reserved@b +%} + +%** Usage: \pexa@aftergroup TOKENS\hfuzz +\def\pexa@aftergroup#1{% + \ifx#1\hfuzz + \else\aftergroup#1\expandafter\pexa@aftergroup\fi +} +\def\pexa@cverb@donormals{\do`\do!\do @\do*\do-\do+\do=\do|\do:\do;\do'\do"\do,\do.\do/\do?\do<\do>\do(\do)\do[\do]}% +\def\pexa@cverb@makemathshift#1{\catcode`#13\relax}% +%\def\pexa@afterelse#1\else#2\fi{\fi#1}% +\def\pexa@cverb@maybeopts{% + \if\noexpand\reserved@a[% + %\catcode`]12 + \egroup\bgroup% restore various catcodes + \expandafter\pexa@cverb@withopts + \else + \expandafter\pexa@cverb@gottoken + \fi +}% +\def\pexa@cverb@withopts#1]{% + \pexa@doopts{#1}% in \begingroup, at last + % vvv Dat: fonts already loaded + \pexa@setupverb% sets \catcodes, similar to `\let\do\@makeother \dospecial\@noligs \@vobeyspaces' + \pexa@cverb@catcodes + \afterassignment\pexa@cverb@gottoken\let\reserved@a= % +} +\def\pexa@cverb@mustbebrace#1{% + \PackageError{examplep}{\noexpand\PVerb inner delimiter must be brace,\MessageBreak not #1}\@ehc + \let\reserved@b\egroup +} +\def\pexa@cverb@mustntbe#1{% + \PackageError{examplep}{\noexpand\PVerb delimiter mustn't be #1}\@ehc + \let\reserved@b\egroup +} +%** Got token in \reserved@a +\def\pexa@cverb@gottoken{% + \pexa@cverb@@verbatimfont + % ^^^ do this before we do too many \catcode changes to load the .fd file. + \let\reserved@b\pexa@cverb@outer + \ifcat\noexpand\reserved@a$% math-shift + \if\noexpand\reserved@a$\pexa@cverb@mustntbe{dollar,\MessageBreak assuming outer mode}\else% Dat: we cannot detect inner/outer mode if it was $ + \if\noexpand\reserved@a\space\pexa@cverb@mustntbe{space}\else + \if\noexpand\reserved@a\expandafter\@gobble\string\{\let\reserved@b\pexa@cverb@outerbrace + \fi\fi\fi + \else\ifcat\noexpand\reserved@a\expandafter{\iffalse}\fi% open-brace + \let\reserved@b\pexa@cverb@innerbrace + \else\ifcat\noexpand\reserved@a\relax + % Dat: the \cs token name has been lost, we only have the meaning of \reserved@a + \pexa@cverb@mustbebrace{backslash or control sequence or active char}% + \else\ifcat\noexpand\reserved@a a% letter + \pexa@cverb@mustntbe{a letter,\MessageBreak but got \meaning\reserved@a\space}% + % Dat: the outer `\PVerb x' would try to delimit by space, not `x' + % Dat: it is possible to get an outer letter: `\expandafter\PVerb\@empty x' + \else\ifcat\noexpand\reserved@a,% other + \pexa@cverb@mustbebrace{\meaning\reserved@a\space}% + % Dat: impossbile to skip to \reserved@a, because I cannot convert it back + % to a character token anymore + % Imp: write a slow loop + \else + \pexa@cverb@mustbebrace{\meaning\reserved@a\space(strange)}% + \let\reserved@b\egroup + %\let\reserved@b\pexa@cverb@inner + \fi\fi\fi\fi\fi + \reserved@b +} + +% 1: begin-group character { +% 2: end-group character } +% 3: math shift character $ +% 4: alignment tab character & +% 6: macro parameter character # +% 7: superscript character ^ +% 8: subscript character _ +% 10: "blank space " +% 11: the letter b +% 12: the character / +% 13: macro:..., undefined, \hbox etc. +% cs: macro:..., undefined, \hbox etc. +\def\pexa@meaning@beg#1 #2 #3{{1}{#3}}% +\def\pexa@meaning@end#1 #2 #3{{2}{#3}}% +\def\pexa@meaning@mat#1 #2 #3 #4{{3}{#4}}% +\def\pexa@meaning@ali#1 #2 #3 #4{{4}{#4}}% +\def\pexa@meaning@mac#1 #2 #3 #4{{6}{#4}}% +\def\pexa@meaning@sup#1 #2 #3{{7}{#3}}% +\def\pexa@meaning@sub#1 #2 #3{{8}{#3}}% +\def\pexa@meaning@bla#1 #2 #3 {{10}{\ }}% +\def\pexa@meaning@the#1 #2#3 #4{{\if#2l11\else12\fi}{#4}}% +\def\pexa@meaningiii#1#2#3{\csname pexa@meaning@#1#2#3\endcsname}% +%** @param #1 a catcode (positive) +%** @param #2 character token or `\ ' +\def\pexa@cverb@makeeg#1#2#3\vfuzz{% + \ifnum#1<1 \@latex@error{Invalid character token}\@ehc\fi + %\catcode`#22 % \catcode 2 == end-group + \catcode`#213 % \catcode 13 == active + \lccode`~`#2\lowercase{\def\reserved@a##1~{\pexa@cverb@outerc{##1}}}% +}% + +\def\pexa@cverb@innerbrace{% + \catcode`\{1 %begin-group + \catcode`\}2 %end-group + \catcode`\ =12 + % ^^^ These \catcode changes will become useful when argument of \PVerb has + % only been partially seen by TeX's eyes, for example in: + % \expandafter\PVerb{foo} + \expandafter\pexa@cverb@innerc\expandafter{\iffalse}\fi% put back the extra open-brace +} +\def\pexa@cverb@vdef@fullhash#1{\pexa@cverb@vdef\reserved@a{#1}}% +\def\pexa@cverb@vdef@halfhash#1{% + \def\reserved@a{#1}% halves the hashes + \expandafter\pexa@cverb@vdef\expandafter\reserved@a\expandafter{\reserved@a}% +} +%** Takes an argument in braces. +\def\pexa@cverb@innerc#1{% + \makeatletter% keep space in `\csname @foo' + \ifnum\pexa@default@fullhash>0 \expandafter\pexa@cverb@vdef@fullhash + \else \expandafter\pexa@cverb@vdef@halfhash\fi + {#1}% + \pexa@cverb@typeset + \egroup +} +%** Doesn't work inside \halign :-( +\def\pexa@cverb@outerbrace{% + \catcode`\{1 %begin-group + \catcode`\}2 %end-group + \catcode`\ =12 + \expandafter\pexa@cverb@outerc\expandafter{\iffalse}\fi% !! \halign +} +\def\pexa@cverb@outer{% + \catcode`\{12 %restore to other + \edef\reserved@b{\noexpand\pexa@cverb@makeeg\expandafter\pexa@meaningiii\meaning\reserved@a00\vfuzz}% + \reserved@b% equivalent to `\catcode\reserved@a=13 \def\reserved@a...' + \catcode`\ =12 + \reserved@a + %\expandafter\pexa@cverb@outerc\expandafter{\iffalse}\fi + % ^^^ nice trick, but doesn't work inside a cell of \halign (! Missing { inserted) + % ^^^ why doesn't it work in \halign?? -- even the arg may contain open-brace +} +\begingroup\lccode\string`\+=\string`\#\lowercase{\toks@{% + %** `\pexa@removehash foo#Xbar#Yand#\hfuzz' expands to `fooXbarYand', if + %** # has catcode 12. + \def\pexa@noremovehash#1+\hfuzz{#1}% + \def\pexa@removehash#1+#2{#1\ifx\hfuzz#2\else#2\expandafter\pexa@removehash\fi}% +}}\expandafter\endgroup\the\toks@ +\def\pexa@cverb@outerc#1{% + % Dat: #1 might contain begin-group and end-group tokens. Change them to other. + % vvv Dat: setting \lccode`a=0 will prevent \showhyphens from working + \@tempcnta0 \loop\ifnum\@tempcnta<256 \ifnum\lccode\@tempcnta=\@tempcnta\else \lccode\@tempcnta\z@\fi \advance\@tempcnta\@ne\repeat + \lccode`\ =1 + %%\lccode`\ =32 \showhyphens{csukafogta b}% + \lowercase{\def\reserved@a{#1}}% don't convert `#' to `##' (catcode 6) + % ^^^ change space to '\001', so \meaning won't convert it to catcode 10 + % Dat: don't expand \reserved@a now, because it might contain high accented tokens + \edef\reserved@b##1>{}% macro:...->... + \edef\reserved@b{\expandafter\reserved@b\meaning\reserved@a}% + \lccode\string`\ =0 % keep spaces generated by `\cs...' + \lccode1=\string`\ % + \ifnum\pexa@default@fullhash=0 % convert `##' to `#' + \edef\reserved@b{\expandafter\expandafter\expandafter\pexa@removehash\expandafter\reserved@b\string##\hfuzz}% + \fi + \expandafter\lowercase\expandafter{\expandafter\def\expandafter\reserved@b\expandafter{\reserved@b}}% + % ^^^ change '\001' back to space + %%\show\reserved@a + \let\reserved@a\reserved@b \pexa@cverb@typeset + \egroup +} + +%** Dat: `\ X' doesn't work, the space will be gobbled :-( +%** Dat: a space will be forced after `\W ' if W is a word +\begingroup\lccode\string`*\string`\\\lowercase{\endgroup +\def\pexa@cverb@nobackslash@lowa#1*\break#2}{% + % ^^^ Dat: \break is the \break following the backslash + #1\ifx#2\hfuzz\else + \ifx#2\break + \expandafter\expandafter\expandafter\pexa@cverb@nobackslash@more + \else + \if#2V\noexpand\char32\relax% visible, unbreakable + \else\if#2S\noexpand\pexa@cverb@@space% default space + \else\if#2B\noexpand\PexaAllowBreak + \else\if#2n\noexpand\hfil\noexpand\break + \else\noexpand#2\fi\fi\fi\fi% Dat: #2 is usually the \break preceding a non-letter char + \expandafter\expandafter\expandafter\pexa@cverb@nobackslash@lowa + \fi + \fi +} +\edef\pexa@cverb@nobackslash@more{\noexpand\pexa@cverb@nobackslash@lowa + \expandafter\@gobble\string\\\noexpand\break}% + +\def\pexa@cverb@removespace@vv#1 #2{% + #1\ifx\hfuzz#2\else + #2\expandafter\pexa@cverb@removespace@vv + \fi +} +\long\def\pexa@cverb@nobackslash#1{% + \begingroup + % vvv remove all spaces emitted by \meaning. Fine but ugly. + \let\pexa@cverb@removespace@v\pexa@cverb@removespace@vv + \let\pexa@removehash\pexa@noremovehash% don't remove \#. Ugly hack. + \pexa@cverb@vdef\reserved@a{#1}% + %\show\reserved@a + %\expandafter\expandafter\expandafter\show\expandafter\@gobble\reserved@a + \makeatother% make \@delfin@ablakban@ hyphenatable: \@ del-fin @ ab-lak-ban @ + \edef\reserved@a{\expandafter\pexa@cverb@addacc\reserved@a\vfuzz + \noexpand\@empty\expandafter\@gobble\string\\\noexpand\break}% + % Dat: expandable constructs emitted by \pexa@cverb@addacc: + % \do(unsave OK) \break \pexa@cverb@@space + \let\pexa@@save@pcs\pexa@cverb@@space + \let\pexa@@save@break\break + \let\pexa@cverb@@space\relax + \let\do\relax + \let\break\relax + \edef\reserved@a{\expandafter\pexa@cverb@nobackslash@lowa\reserved@a\hfuzz}% + \let\pexa@cverb@@space\pexa@@save@pcs + \let\break\pexa@@save@break + \pexa@cverb@typeset@low + \endgroup +} + +% --- One-character verbatim environments +% +% -- A kis-verbatim \verb+...+ helyett írható az, hogy ÷...÷ +% (az italic correction azért kell elé, hogy ha parancs definícióknál +% italic-kal írunk egy opcionális paramétert, ne kelljen utána kézzel +% korrigálni.) Mostmár sorvége jel is lehet benne, mert \PVerb-et használ +% (sorvége==szóköz), de ha a következő sor szóközzel kezdődik, akkor több +% szóköz lesz. Használható \section-ben is, és (óvatosan) tabular-ban is, +% ha minden oszlop-ban a brace-ek balance-olódnak. Lehet benne ékezetes +% betű. +% +% Legjobb emacsban azt írni, hogy +% szöveg..... +% %%% +% ÷aaa aaa aaa÷ szöveg folytatása ... +% mert akkor a comment miatt nem töri el a verbatimos szöveget. +% +% -- \÷...÷ olyan, mint a ÷...÷, de minden speciális karakter elé backslash +% kell. Például: \÷\{\}\%\\÷. Ily módon könnyebben adható +% makró-argumentumnak. \÷\V÷ egy látható szóközt szúr be, \÷\B÷ +% \PexaAllowBreak-et (kis jellel sortörést engedélyez), \÷\S÷ ugyanaz, +% mint ÷ ÷. Ha minden elé gondosan kirakjuk a +% backslash-t, akkor használható \section-ben is. +% +% -- \Q{...} és \Q. olyan, mint \÷...÷. Tehát látható szóköz: \Q\V +% +% -- !! \textit{÷#÷ nem megy} +% +% -- \Q\÷ in OT1 encoding +% + +\begingroup \catcode`÷=13 \@firstofone{\endgroup +\def\pexa@div@setcodes{\catcode`÷=13 + \lccode`×=0 \uccode`×=0 % /multiply-sign isn't a lower-upper case variant (\OE?) + \lccode`÷=0 \uccode`÷=0 } +%** Can be used in \section (as ``inner'' \PVerb), with limitations. +%** !! parameters, as with ÷#÷ +\def\pexa@div{% Dat: not \long. File. ÷ + \ifx\protect\@typeset@protect + \expandafter\pexa@overb@low + \else + \noexpand\pexa@div + %\expandafter\pexa@overb@ignore doesn't work :-(( + \fi +} + +%** Works in math mode, too. What about robustness? +\def\pexa@overb@low{% ASCII 247 + % Dat: would be too late for \catcode of `\PVerb÷' here + % Imp: check for innerness-outerness + \relax\ifmmode\hbox\else\leavevmode\/\fi + \bgroup + %\pexa@doopts{#1}% in \begingroup, at last + {\pexa@cverb@@verbatimfont}% load .fd files with undisturbed \catcodes + \pexa@setupverb + \pexa@cverb@catcodes + \catcode\string`\{12 % restore to other + \catcode\string`\ 12 + \catcode`÷=13 + \def\reserved@a##1÷{% Dat: define with current \catcode`÷ + %\showthe\catcode`-% 3 (math-shift) + \pexa@cverb@outerc{##1}}% defined in examplep.sty + \reserved@a + %\expandafter\pexa@cverb@outerc\expandafter{\iffalse}\fi + % ^^^ nice trick, but doesn't work inside a cell of \halign (! Missing { inserted) + % ^^^ why doesn't it work in \halign?? -- even the arg may contain open-brace +} + +\def\pexa@nomath{\relax\ifmmode\hbox\else\leavevmode\/\fi} + +%** Dat: we need \long for index generation of \Q{\par} +\long\def\pexa@Q#1{\pexa@bsdiv#1÷}% \Q +\long\def\pexa@bsdiv#1÷{% \÷ + % Dat: An evil #1 may contain \fi here, so we have to be very careful. + \ifx\protect\@typeset@protect + \expandafter\@gobble\fi\@thirdofthree\@firstoftwo + \pexa@nomath\pexa@overb@noe@a + {\pexa@cverb@nobackslash{#1}}% + %\ifx\protect\@typeset@protect \pexa@nomath{\pexa@cverb@nobackslash{#1}}% + %%\else \noexpand\÷#1\noexpand÷\fi % Undefined control sequence \V + %%\else \BackslashDivideIsFragile \fi + %\else \noexpand\÷\expandafter\pexa@overb@noexpand#1÷\fi +}% +\long\def\pexa@overb@noe@a#1{\pexa@overb@noe@b#1}% +\long\def\pexa@overb@noe@b\pexa@cverb@nobackslash#1{% + \noexpand\÷\pexa@overb@noexpand#1÷}% Dat: having \÷\expandafter here would expand the 1st \; in the .aux file: \section{\Q{\;hello\;bello}} +\long\def\pexa@overb@noexpand#1{% + \noexpand#1% + \ifx#1÷\else\expandafter\pexa@overb@noexpand\fi +} +\def\pexa@activate@Q{\let\Q\pexa@Q} +\def\pexa@activate@bsdiv{\pexa@div@setcodes \let\÷\pexa@bsdiv} +\def\pexa@activate@div {\pexa@div@setcodes \let÷\pexa@div} +\def\pexa@activate@url {\def\url{\PVerbOpt{}}} +}% ÷ has catcode 13 + +\def\pexa@activate@verbatimenv{% + \def\verbatim{\PSource[]}% + \def\endverbatim{\endPSource}% + \@namedef{verbatim*}{\PSource[source-space=visbreak]} + \@namedef{endverbatim*}{\endPSource} +} + +% --- + +%** Like \allowbreak, but special to our tt font +\DeclareRobustCommand\pexa@abreak{% + \begingroup + \edef\reserved@a{{\ttdefault}{m}{n}}% + \edef\reserved@b{{\f@family}{\f@series}{\f@shape}}% + \ifx\reserved@a\reserved@b \PexaAllowBreak \else \allowbreak \fi + \endgroup} +\def\pexa@activate@abreak{\def\abreak{\pexa@abreak}} + +% --- + +%** Apply default options. +\pexa@doopts{% + samplewidth=.5\PexaWidth,xalign=l,yalign=u,boxstyle=p, + allowshrink=yes,allowbreak=yes,srcstyle=left,usewidth=skipwidth, + % xindent=none,yindent=none, % Dat: was this before Tue Jan 11 18:42:34 CET 2005 + xindent=deeppre,yindent=deeper, + source-space=invfixbreak,firstlinenum=1, + pexaminipage-setuphook={},addvspace-top=\addvspace, + addvspace-bottom={\vskip\z@skip\addvspace},% don't accumulate Sample>Source \vskip + vextravskip=\z@,vsmallht=1pt, + linenumbersep={},linenumberformat={{\normalfont\rmfamily\scriptsize\number-\pexa@@cntb}\pexa@default@linenumbersep}, + pverb-space=invbreak,pverb-hyphenchar=hyphen,pverb-verbatimfont=pexavf, + pverb-linebreak=char,pverb-linebreakchar={$\lnot$},pverb-stretchshrink=yes, + pverb-hash=full,source-verbatimfont=pexavf,baseline-grid=no, + vextrabotdepth=\z@,pverb-leftbreakmin=2,mp-equation-reset=yes, + mp-varioref-reset=no,Q=unchanged,bsdiv=unchanged,div=unchanged,url=unchanged, + source-par-align=left,listings=no,listings-verbatimfont=normalfont, + source-sepwidth=\tabcolsep,vrule=rule,verbatimenv=unchanged,noligs=some, + } +% Dat: inlineprefix= is missing. + +\AtEndOfPackage{\let\@unprocessedoptions\relax} +\expandafter\ifx\csname opt@\@currname.\@currext\endcsname\relax\else + \expandafter\expandafter\expandafter\pexa@doopts + \expandafter\expandafter\expandafter{% + \csname opt@\@currname.\@currext\endcsname}\fi +%\edef\reserved@a{\noexpand\pexa@doopts{\@ptionlist{\@currname.\@currext}}}% +%\reserved@a + +\pexa@@restorecat \let\pexa@@restorecat\@undefined +\endinput% examplep.sty |