texlive[41507] Master: autobreak (20jun16)
commits+karl at tug.org
commits+karl at tug.org
Tue Jun 21 00:24:28 CEST 2016
Revision: 41507
http://tug.org/svn/texlive?view=revision&revision=41507
Author: karl
Date: 2016-06-21 00:24:28 +0200 (Tue, 21 Jun 2016)
Log Message:
-----------
autobreak (20jun16)
Modified Paths:
--------------
trunk/Master/tlpkg/bin/tlpkg-ctan-check
trunk/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc
Added Paths:
-----------
trunk/Master/texmf-dist/doc/latex/autobreak/
trunk/Master/texmf-dist/doc/latex/autobreak/README.md
trunk/Master/texmf-dist/doc/latex/autobreak/autobreak.pdf
trunk/Master/texmf-dist/source/latex/autobreak/
trunk/Master/texmf-dist/source/latex/autobreak/autobreak.dtx
trunk/Master/texmf-dist/source/latex/autobreak/autobreak.ins
trunk/Master/texmf-dist/tex/latex/autobreak/
trunk/Master/texmf-dist/tex/latex/autobreak/autobreak.sty
trunk/Master/tlpkg/tlpsrc/autobreak.tlpsrc
Added: trunk/Master/texmf-dist/doc/latex/autobreak/README.md
===================================================================
--- trunk/Master/texmf-dist/doc/latex/autobreak/README.md (rev 0)
+++ trunk/Master/texmf-dist/doc/latex/autobreak/README.md 2016-06-20 22:24:28 UTC (rev 41507)
@@ -0,0 +1,75 @@
+autobreak
+=========
+
+[](https://travis-ci.org/tueda/autobreak)
+
+This package implements a simple mechanism of line/page breaking
+within the `align` environment of the `amsmath` package; new line
+characters are considered as possible candidates for the breaks and
+the package tries to put breaks at adequate places. It is suitable
+for computer-generated long formulae with many terms.
+
+Example
+-------
+
+```latex
+\documentclass{article}
+\usepackage{amsmath}
+\usepackage{autobreak}
+\pagestyle{empty}
+\allowdisplaybreaks
+\begin{document}
+
+\begin{align}
+ \begin{autobreak}
+ \zeta(2) =
+ 1
+ + \frac{1}{4}
+ + \frac{1}{9}
+ + \frac{1}{16}
+ + \frac{1}{25}
+ + \frac{1}{36}
+ + \frac{1}{49}
+ + \frac{1}{64}
+ + \frac{1}{81}
+ + \frac{1}{100}
+ + \frac{1}{121}
+ + \frac{1}{144}
+ + \frac{1}{169}
+ + \frac{1}{196}
+ + \frac{1}{225}
+ + \frac{1}{256}
+ + \frac{1}{289}
+ + \frac{1}{324}
+ + \frac{1}{361}
+ + \frac{1}{400}
+ + \frac{1}{441}
+ + \frac{1}{484}
+ + \frac{1}{529}
+ + \frac{1}{576}
+ + \frac{1}{625}
+ + \frac{1}{676}
+ + \frac{1}{729}
+ + \frac{1}{784}
+ + \frac{1}{841}
+ + \frac{1}{900}
+ + \dots
+ \end{autobreak}
+\end{align}
+
+\end{document}
+```
+
+
+
+
+Licence
+-------
+The LaTeX Project Public License 1.3 (or any later version)
+
+
+Bugs and remarks
+----------------
+Feedback is welcome on the Issue Tracker of GitHub:
+
+ https://github.com/tueda/autobreak/issues
Property changes on: trunk/Master/texmf-dist/doc/latex/autobreak/README.md
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Added: trunk/Master/texmf-dist/doc/latex/autobreak/autobreak.pdf
===================================================================
(Binary files differ)
Index: trunk/Master/texmf-dist/doc/latex/autobreak/autobreak.pdf
===================================================================
--- trunk/Master/texmf-dist/doc/latex/autobreak/autobreak.pdf 2016-06-20 22:23:22 UTC (rev 41506)
+++ trunk/Master/texmf-dist/doc/latex/autobreak/autobreak.pdf 2016-06-20 22:24:28 UTC (rev 41507)
Property changes on: trunk/Master/texmf-dist/doc/latex/autobreak/autobreak.pdf
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/pdf
\ No newline at end of property
Added: trunk/Master/texmf-dist/source/latex/autobreak/autobreak.dtx
===================================================================
--- trunk/Master/texmf-dist/source/latex/autobreak/autobreak.dtx (rev 0)
+++ trunk/Master/texmf-dist/source/latex/autobreak/autobreak.dtx 2016-06-20 22:24:28 UTC (rev 41507)
@@ -0,0 +1,1130 @@
+% \iffalse meta-comment
+%
+% Copyright (C) 2016 by Takahiro Ueda <tueda at nikhef.nl>
+%
+% This file may be distributed and/or modified under the conditions of
+% the LaTeX Project Public License, either version 1.3 of this license
+% or (at your option) any later version. The latest version of this
+% license is in:
+%
+% http://www.latex-project.org/lppl.txt
+%
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% To typeset this document, type the following commands:
+% latex autobreak.dtx
+% makeindex -s gind.ist autobreak.idx
+% makeindex -s gglo.ist -o autobreak.gls autobreak.glo
+% latex autobreak.dtx
+% latex autobreak.dtx
+%
+%<*ignore>
+\def\nameofplainTeX{plain}
+\ifx\fmtname\nameofplainTeX\else
+ \expandafter\begingroup
+\fi
+%</ignore>
+%<*install>
+
+\input docstrip.tex
+\keepsilent
+\askforoverwritefalse
+\preamble
+
+This is a generated file.
+
+Copyright (C) 2016 by Takahiro Ueda <tueda at nikhef.nl>
+
+This file may be distributed and/or modified under the conditions of
+the LaTeX Project Public License, either version 1.3 of this license
+or (at your option) any later version. The latest version of this
+license is in:
+
+ http://www.latex-project.org/lppl.txt
+
+and version 1.3 or later is part of all distributions of LaTeX
+version 2005/12/01 or later.
+
+\endpreamble
+
+\generate{
+ \usedir{tex/latex/autobreak}
+ \file{\jobname.sty}{\from{\jobname.dtx}{package}}
+}
+
+%</install>
+%<*ignore>
+\iffalse
+%</ignore>
+%<*install>
+
+\obeyspaces
+\Msg{*************************************************************}
+\Msg{* *}
+\Msg{* To finish the installation you have to move the following *}
+\Msg{* file into a directory searched by TeX: *}
+\Msg{* *}
+\Msg{* autobreak.sty *}
+\Msg{* *}
+\Msg{* To produce the documentation run the file autobreak.dtx *}
+\Msg{* through LaTeX. *}
+\Msg{* *}
+\Msg{* Happy TeXing! *}
+\Msg{* *}
+\Msg{*************************************************************}
+
+\endbatchfile
+
+%</install>
+%<*ignore>
+\fi
+\generate{
+ \file{\jobname.ins}{\from{\jobname.dtx}{install}}
+}
+\ifx\fmtname\nameofplainTeX
+ \expandafter\endbatchfile
+\else
+ \expandafter\endgroup
+\fi
+%</ignore>
+%<*driver>
+\documentclass{ltxdoc}
+\usepackage[T1]{fontenc}
+\usepackage{lmodern}
+\usepackage{hypdoc}
+\usepackage{amsmath}
+\usepackage{autobreak}
+\EnableCrossrefs
+\CodelineIndex
+\RecordChanges
+
+\allowdisplaybreaks
+
+% The default value of IndexColumns=3 never fits in pages.
+\setcounter{IndexColumns}{2}
+
+\providecommand\env[1]{\texttt{#1}}
+\providecommand\pkg[1]{\textsf{#1}}
+
+\usepackage{fancyvrb}
+
+\edef\examplefilename{\jobname.tmp}
+
+\newenvironment{example}{%
+ \VerbatimEnvironment
+ \begin{VerbatimOut}[gobble=2]{\examplefilename}%
+}{%
+ \end{VerbatimOut}%
+ \smallskip
+ \noindent
+ \begin{list}{}{}\item
+ \begin{minipage}[t]{0.45\linewidth}%
+ \VerbatimInput{\examplefilename}%
+ \end{minipage}%
+ \begin{minipage}[t]{0.5\linewidth}%
+ \input{\examplefilename}%
+ \end{minipage}%
+ \end{list}%
+ \smallskip
+ \noindent
+}
+
+\newenvironment{example*}{%
+ \VerbatimEnvironment
+ \begin{VerbatimOut}[gobble=2]{\examplefilename}%
+}{%
+ \end{VerbatimOut}%
+ \smallskip
+ \noindent
+ \begin{list}{}{}\item
+ \begin{minipage}[t]{0.95\linewidth}%
+ \VerbatimInput{\examplefilename}%
+ \end{minipage}%
+ \end{list}%
+ \smallskip
+ \noindent
+}
+
+\newenvironment{example**}{%
+ \VerbatimEnvironment
+ \begin{VerbatimOut}[gobble=2]{\examplefilename}%
+}{%
+ \end{VerbatimOut}%
+ \smallskip
+ \noindent
+ \begin{list}{}{}\item
+ \begin{minipage}[t]{0.95\linewidth}%
+ \VerbatimInput{\examplefilename}%
+ \end{minipage} \\
+ \begin{minipage}[t]{0.95\linewidth}%
+ \input{\examplefilename}%
+ \end{minipage}%
+ \end{list}%
+ \smallskip
+ \noindent
+}
+
+% decl from ltxguide[2001/05/28]
+\newenvironment{decl}[1][]%
+ {\par\small\addvspace{4.5ex plus 1ex}%
+ \vskip -\parskip
+ \ifx\relax#1\relax
+ \def\@decl at date{}%
+ \else
+ \def\@decl at date{\NEWfeature{#1}}%
+ \fi
+ \noindent\hspace{-\leftmargini}%
+ \begin{tabular}{|l|}\hline\ignorespaces}%
+ {\\\hline\end{tabular}\nobreak\@decl at date\par\nobreak
+ \vspace{2.3ex}\vskip -\parskip}
+
+\newcommand\NumberedBox[1]{%
+ \, \framebox[25pt]{#1} \,%
+}
+
+\newcommand\LongerNumberedBox[1]{%
+ \, \framebox[30pt]{#1} \,%
+}
+
+\begin{document}
+ \DocInput{\jobname.dtx}
+\end{document}
+%</driver>
+% \fi
+%
+% \CheckSum{336}
+%
+% \CharacterTable
+% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+% Digits \0\1\2\3\4\5\6\7\8\9
+% Exclamation \! Double quote \" Hash (number) \#
+% Dollar \$ Percent \% Ampersand \&
+% Acute accent \' Left paren \( Right paren \)
+% Asterisk \* Plus \+ Comma \,
+% Minus \- Point \. Solidus \/
+% Colon \: Semicolon \; Less than \<
+% Equals \= Greater than \> Question mark \?
+% Commercial at \@ Left bracket \[ Backslash \\
+% Right bracket \] Circumflex \^ Underscore \_
+% Grave accent \` Left brace \{ Vertical bar \|
+% Right brace \} Tilde \~}
+%
+% \GetFileInfo{\jobname.sty}
+%
+% \title{The \pkg{autobreak} package\thanks{This document corresponds
+% to \pkg{autobreak}~\fileversion, dated \filedate.}}
+% \author{Takahiro Ueda}
+%
+% \date{19 June 2016}
+%
+% \maketitle
+%
+% \begin{abstract}
+% This package implements a simple mechanism of line/page breaking
+% within the \env{align} environment of the \pkg{amsmath} package; new
+% line characters are considered as possible candidates for the breaks
+% and the package tries to put breaks at adequate places.
+% It is suitable for computer-generated long formulae with many terms.
+% \end{abstract}
+%
+% \changes{v0.1}{2016/06/03}{Initial version}
+%
+% \tableofcontents
+%
+% \section{Introduction}
+%
+% Sometimes people want to put long formulae in their documents, which
+% do not fit in a line and may span over multiple pages.
+% The following is an equation of explicitly writing down the first 50
+% terms in the sum of the well-known Basel problem:
+% \begin{align}
+% \begin{autobreak}
+% \zeta(2) =
+% 1
+% + \frac{1}{4}
+% + \frac{1}{9}
+% + \frac{1}{16}
+% + \frac{1}{25}
+% + \frac{1}{36}
+% + \frac{1}{49}
+% + \frac{1}{64}
+% + \frac{1}{81}
+% + \frac{1}{100}
+% + \frac{1}{121}
+% + \frac{1}{144}
+% + \frac{1}{169}
+% + \frac{1}{196}
+% + \frac{1}{225}
+% + \frac{1}{256}
+% + \frac{1}{289}
+% + \frac{1}{324}
+% + \frac{1}{361}
+% + \frac{1}{400}
+% + \frac{1}{441}
+% + \frac{1}{484}
+% + \frac{1}{529}
+% + \frac{1}{576}
+% + \frac{1}{625}
+% + \frac{1}{676}
+% + \frac{1}{729}
+% + \frac{1}{784}
+% + \frac{1}{841}
+% + \frac{1}{900}
+% + \frac{1}{961}
+% + \frac{1}{1024}
+% + \frac{1}{1089}
+% + \frac{1}{1156}
+% + \frac{1}{1225}
+% + \frac{1}{1296}
+% + \frac{1}{1369}
+% + \frac{1}{1444}
+% + \frac{1}{1521}
+% + \frac{1}{1600}
+% + \frac{1}{1681}
+% + \frac{1}{1764}
+% + \frac{1}{1849}
+% + \frac{1}{1936}
+% + \frac{1}{2025}
+% + \frac{1}{2116}
+% + \frac{1}{2209}
+% + \frac{1}{2304}
+% + \frac{1}{2401}
+% + \frac{1}{2500}
+% + \dots
+% \end{autobreak}
+% \end{align}
+% The above example might seem nonsense, but putting long formulae may
+% have a meaning in some cases and become inevitable for completeness of
+% documents, writing self-contained papers, or just to impress readers.
+% They are typically generated as outputs of computer algebra systems,
+% and would have the form of a sum of many terms while each term is
+% short.
+%
+% Then, the question is how to break long formulae in such a way that
+% the expressions do not make any overfull lines for \LaTeX{}.
+% Certainly, one can attempt to manually insert line breaks by trial and
+% error, checking whether \LaTeX{} warns overfull lines, and this
+% process could be automatized by external scripts at some extent.
+% A shortcoming of such `manual' approaches is that line breaks have to
+% be reexamined whenever the layout of the document is changed, e.g.,
+% replacing the document class or reusing existing equations into
+% another document with a different format.
+%
+% The goal of the \pkg{autobreak} package is to give a reasonably simple
+% solution for (semi-)automatic line breaking of long formulae within
+% \LaTeX{}^^A
+% \footnote{^^A
+% There is another package \pkg{breqn}
+% (\url{https://www.ctan.org/pkg/breqn}), which adopts a more
+% automatic fashion and is useful for more sophisticated line
+% breaking, unless you get ``Dimension too large'' error for really
+% big expressions.
+% }.
+%
+% \section{Usage}
+%
+% The \pkg{autobreak} package is supposed to be used together with the
+% \pkg{amsmath} package^^A
+% \footnote{^^A
+% \url{https://www.ctan.org/pkg/amsmath}.
+% }^^A
+% \footnote{^^A
+% Actually \pkg{autobreak} internally loads \pkg{amsmath}, but it is
+% still a good practice to explicitly include all packages providing
+% macros used in your document.
+% }:
+% \begin{example*}
+% \usepackage{amsmath}
+% \usepackage{autobreak}
+% \end{example*}
+% When your document contains long equations over multiple pages,
+% you might want to use \cs{allowdisplaybreaks} of \pkg{amsmath}
+% package:
+% \begin{example*}
+% \allowdisplaybreaks
+% \end{example*}
+%
+% \begin{decl}
+% |\begin{autobreak}| \\
+% \meta{long-equations} \\
+% |\end{autobreak}|
+% \end{decl}
+% \SpecialEnvIndex{autobreak}
+% The \env{autobreak} environment is used for breaking lines in long
+% formulae in the \env{align} environment of \pkg{amsmath}^^A
+% \footnote{^^A
+% Technically, \env{align} (with \cs{notag} to suppress equation
+% numbers except the last line) is the only option we can use for
+% page-break aligned equations within \pkg{amsmath} because
+% \env{split}, \env{gathered}, \env{aligned} and \env{alginedat} do
+% not allow page breaking.
+% \env{dmath} of \env{breqn} with \cs{eqinterlinepenalty}\texttt{=0}
+% allows page breaking, but may fail to find a reasonable tag place.
+% }.
+% \begin{example}
+% \begin{align}
+% \begin{autobreak}
+% \zeta(3) =
+% 1
+% + \frac{1}{8}
+% + \frac{1}{27}
+% + \frac{1}{64}
+% + \frac{1}{125}
+% + \frac{1}{216}
+% + \frac{1}{343}
+% + \frac{1}{512}
+% + \frac{1}{729}
+% + \frac{1}{1000}
+% + \frac{1}{1331}
+% + \frac{1}{1728}
+% + \frac{1}{2197}
+% + \frac{1}{2744}
+% + \frac{1}{3375}
+% + \frac{1}{4096}
+% + \frac{1}{4913}
+% + \frac{1}{5832}
+% + \frac{1}{6859}
+% + \frac{1}{8000}
+% + \dots
+% \end{autobreak}
+% \end{align}
+% \end{example}
+% The magic happens from the simple fact that \env{autobreak} interprets
+% all new line characters appearing between |\begin{autobreak}| and
+% |\end{autobreak}| as \textit{breakable points}, at which any line
+% breaks can be logically inserted. To be more exact, the first
+% non-empty block, separated from the rest by a new line character,
+% determines the indentation of the successive lines. Then
+% \env{autobreak} tries to fill the line with the rest of the blocks,
+% and puts a line break when they do not fit in a line. This is
+% clarified by the following example:
+% \begin{example}
+% \begin{align}
+% \begin{autobreak}
+% \NumberedBox{1}
+% \NumberedBox{2}
+% \NumberedBox{3}
+% \NumberedBox{4}
+% \NumberedBox{5}
+% \NumberedBox{6}
+% \NumberedBox{7}
+% \NumberedBox{8}
+% \NumberedBox{9}
+% \NumberedBox{10}
+% \NumberedBox{11}
+% \end{autobreak}
+% \end{align}
+% \end{example}
+%
+% It is also possible to put more than one \env{autobreak} in one
+% \env{align}:
+% \begin{example}
+% \begin{align}
+% \begin{autobreak}
+% \NumberedBox{1} =
+% \NumberedBox{2}
+% + \NumberedBox{3}
+% + \NumberedBox{4}
+% + \NumberedBox{5}
+% + \NumberedBox{6}
+% + \NumberedBox{7}
+% + \NumberedBox{8}
+% + \NumberedBox{9}
+% + \NumberedBox{10} ,
+% \end{autobreak}
+% \\
+% \begin{autobreak}
+% \LongerNumberedBox{1} =
+% \NumberedBox{2}
+% + \NumberedBox{3}
+% + \NumberedBox{4}
+% + \NumberedBox{5}
+% + \NumberedBox{6}
+% + \NumberedBox{7}
+% + \NumberedBox{8}
+% + \NumberedBox{9}
+% + \NumberedBox{10} .
+% \end{autobreak}
+% \end{align}
+% \end{example}
+% For a technical reason, it often requires more than one run of
+% \LaTeX{}, and in such cases one will get informed by the following
+% warning:
+% \begin{example*}
+% Package autobreak Warning: Layout may have changed.
+% (autobreak) Rerun to get layout correct.
+% \end{example*}
+% In the next run, the layout of the equations will be corrected.
+%
+% \begin{decl}
+% |\everybeforeautobreak| \marg{tokens} \\
+% |\everyaftereautobreak| \marg{tokens}
+% \end{decl}
+% \SpecialUsageIndex{\everybeforeautobreak}
+% \SpecialUsageIndex{\everyafterautobreak}
+% They specify token lists inserted before and after automatically
+% inserted line breaks in \env{autobreak}. For example,
+% \begin{example**}
+% \begin{align}
+% \everyafterautobreak{\times}
+% \begin{autobreak}
+% \cos\left(\frac{\pi x}{2}\right) =
+% \left(1-x^2\right)
+% \left(1-\frac{x^2}{9}\right)
+% \left(1-\frac{x^2}{25}\right)
+% \left(1-\frac{x^2}{49}\right)
+% \left(1-\frac{x^2}{81}\right)
+% \left(1-\frac{x^2}{121}\right)
+% \left(1-\frac{x^2}{169}\right)
+% \left(1-\frac{x^2}{225}\right)
+% \left(1-\frac{x^2}{289}\right)
+% \left(1-\frac{x^2}{361}\right)
+% \left(1-\frac{x^2}{441}\right)
+% \dots
+% \end{autobreak}
+% \end{align}
+% \end{example**}
+%
+% \section{Caveats}
+%
+% Because \env{autobreak} tries to insert line breaks at any of new line
+% characters, you must not make any new lines at which the line cannot
+% be broken^^A
+% \footnote{^^A
+% You may put "\%" at the end of the line to avoid a new line.
+% }.
+% For example
+% \begin{example*}
+% \begin{align}
+% \begin{autobreak}
+% x =
+% % A problematic line break.
+% \frac{1}
+% {2} .
+% \end{autobreak}
+% \end{align}
+% \end{example*}
+% gives an error in the typesetting:
+% \begin{example*}
+% ! Missing } inserted.
+% <inserted text>
+% }
+% l.8 \end{align}
+% \end{example*}
+%
+% Putting `|\\|' or `|&|' inside \env{autobreak}, which tries to insert
+% these special stuffs automatically, also causes typesetting errors.
+%
+% The \env{autobreak} environment uses \cs{linewidth} as the maximum
+% width that expressions in its body can occupy. There is no way for
+% \env{autobreak} to know how much other formulae consume the space
+% outside it. Therefore it fails to determine the adequate maximum
+% width when there are expressions outside \env{autobreak} and
+% then \LaTeX{} gives overfull line warnings:
+% \begin{example*}
+% \begin{align}
+% \text{some stuff outside autobreak}
+% \begin{autobreak}
+% \text{LHS} =
+% ...
+% \end{autobreak} . % Even just a "." can be problematic.
+% \end{align}
+% % May give overfull line warnings
+% \end{example*}
+%
+% One may want to separate long formulae from the main document file to
+% other files and include them via \cs{input}\marg{file}, for example,
+% \begin{example*}
+% \begin{align}
+% \begin{autobreak}
+% \input{longeqn.inc} % It works!
+% \end{autobreak}
+% \end{align}
+%
+% \begin{align}
+% \begin{autobreak}
+% lhs =
+% \input{longrhs.inc} % It also works!
+% .
+% \end{autobreak}
+% \end{align}
+% \end{example*}
+% The current version of \env{autobreak} supports these cases: the file
+% content of \cs{input}\marg{file} is expanded before recognizing the
+% lines, with the help of the \pkg{catchfile} package^^A
+% \footnote{^^A
+% \url{https://www.ctan.org/pkg/catchfile}.
+% },
+% when it appears at the beginning of each line. But it does not support
+% \cs{input}\marg{file} in the middle of the lines:
+% \begin{example*}
+% \begin{align}
+% \begin{autobreak}
+% x + \input{longexpr.inc} % Sorry, it does not work.
+% \end{autobreak}
+% \end{align}
+% \end{example*}
+% The difficulty comes from the fact that it needs to be expanded before
+% \env{autobreak} scans lines. By the same reason, \env{autobreak} fails
+% to detect new lines defined inside macros^^A
+% \footnote{^^A
+% Actually, when the definition of \cs{foo} is parsed, the new line
+% characters inside it are usually lost.
+% }:
+% \begin{example*}
+% \newcommand{\foo}{
+% a
+% + b
+% + c
+% + d
+% }
+% \begin{align}
+% \begin{autobreak}
+% \foo + \foo + \foo + \foo % No new lines can be detected.
+% \end{autobreak}
+% \end{align}
+% \end{example*}
+%
+% \StopEventually{^^A
+% \PrintChanges
+% \PrintIndex
+% }
+%
+% \section{Implementation}
+%
+% \begin{macrocode}
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{autobreak}%
+ [2016/06/03 v0.1 simple line breaking of long formulae]
+% \end{macrocode}
+%
+% \subsection{Registers and constants}
+%
+% \begin{macro}{\everybeforeautobreak}
+% The list of tokens that gets inserted before every line break generated
+% by \env{autobreak}.
+% \begin{macrocode}
+\newtoks\everybeforeautobreak
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\everyafterautobreak}
+% The list of tokens that gets inserted after every line break generated
+% by \env{autobreak}.
+% \begin{macrocode}
+\newtoks\everyafterautobreak
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at alltoks}
+% The token register to store the whole result of \env{autobreak}.
+% \begin{macrocode}
+\newtoks\@autobreak at alltoks
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at linetoks}
+% The token register for the current line.
+% \begin{macrocode}
+\newtoks\@autobreak at linetoks
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at lhswidth}
+% The width of the current left-hand side.
+% \begin{macrocode}
+\newdimen\@autobreak at lhswidth
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at rhswidth}
+% The width of the current right-hand side.
+% \begin{macrocode}
+\newdimen\@autobreak at rhswidth
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at maxlhswidth}
+% The width of the longest left-hand side occupied. Affected by the
+% |.aux| file generated in the previous run.
+% \begin{macrocode}
+\newdimen\@autobreak at maxlhswidth
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at realmaxlhswidth}
+% The width of the longest left-hand side occupied. Not affected by the
+% |.aux| file generated in the previous run.
+% \begin{macrocode}
+\newdimen\@autobreak at realmaxlhswidth
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at maxrhswidth}
+% The maximum width that the right-hand sides can occupy.
+% \begin{macrocode}
+\newdimen\@autobreak at maxrhswidth
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at sep}
+% The additional space needed for putting the left-hand side and the
+% right-hand side in one line, in other words, the separation for |&|.
+% TODO: how can we know the exact extra space to be inserted?
+% \begin{macrocode}
+\def\@autobreak at sp{7\p@}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at newlinechar}
+% The macro representing an active |^^M|.
+% \begin{macrocode}
+\begingroup
+ \catcode`\^^M=\active
+ \gdef\@autobreak at newlinechar{^^M}
+\endgroup
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Interaction with \texttt{.aux} files}
+%
+% When there are two or more \env{autobreak} in one \env{align}, each
+% \env{autobreak} has to know the maximum width of the left-hand side of
+% the all \env{autobreak} in the same \env{align}. Instead of violating
+% `causality' (e.g., how \LaTeX{} parses a file from the beginning to
+% the end), we use |.aux| file to store the maximum left-hand side
+% width, which provides the correct value in the next run.
+%
+% \begin{macro}{\if at autobreak@invalidlayout}
+% The switch to be turned on when an invalid layout is detected.
+% \begin{macrocode}
+\newif\if at autobreak@invalidlayout
+\@autobreak at invalidlayoutfalse
+% \end{macrocode}
+% \end{macro}
+% Show a warning if the user needs to rerun.
+% \begin{macrocode}
+\AtEndDocument{%
+ \if at autobreak@invalidlayout
+ \if at filesw
+ \PackageWarningNoLine{autobreak}{Layout may have changed.
+ \MessageBreak Rerun to get layout correct}%
+ \else
+ \PackageWarningNoLine{autobreak}{Layout may be wrong}%
+ \fi
+ \fi
+}
+% \end{macrocode}
+% \begin{macro}{\@autobreak at getmaxlhswidth}
+% To be expanded to a value saved in |.aux| in the previous run, or
+% |0pt| if not found.
+% \begin{macrocode}
+\def\@autobreak at getmaxlhswidth#1{%
+ \@ifundefined{@autobreak at w@#1}{%
+ \z@
+ }{%
+ \@nameuse{@autobreak at w@#1}%
+ }%
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at setmaxlhswidth}
+% Called in |.aux|.
+% \begin{macrocode}
+\def\@autobreak at setmaxlhswidth#1#2{%
+ \global\@namedef{@autobreak at w@#1}{#2}%
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{@autobreak at eqnindex}
+% The counter to identify each \env{align}.
+% \begin{macrocode}
+\newcounter{@autobreak at eqnindex}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{@autobreak at subeqnindex}
+% The counter to store the number of \env{autobreak} in an \env{align}.
+% \begin{macrocode}
+ \newcounter{@autobreak at subeqnindex}[@autobreak at eqnindex]%
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at loadmaxlhswidth}
+% Loads \cs{@autobreak at maxlhswidth} for the next \env{align}.
+% \begin{macrocode}
+\def\@autobreak at loadmaxlhswidth{%
+ \stepcounter{@autobreak at eqnindex}%
+ \@autobreak at maxlhswidth=%
+ \@autobreak at getmaxlhswidth{\arabic{@autobreak at eqnindex}}%
+ \@autobreak at realmaxlhswidth=\z@
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at savemaxlhswidth}
+% Saves \cs{@autobreak at realmaxlhswidth} for the next run.
+% \begin{macrocode}
+\def\@autobreak at savemaxlhswidth{%
+ \ifnum\arabic{@autobreak at subeqnindex}>0
+ \ifdim\@autobreak at maxlhswidth=\@autobreak at realmaxlhswidth
+ \else
+% \end{macrocode}
+% We have used the wrong value of \cs{@autobreak at maxlhswidth} (was too
+% much). Need to rerun.
+% \begin{macrocode}
+ \global\@autobreak at invalidlayouttrue
+ \fi
+% \end{macrocode}
+% Note that \cs{@autobreak at maxlhswidth} becomes problematic only when
+% two or more \env{autobreak} appear in one \env{align}. In the case
+% with one \env{autobreak}, the default value |0pt| is safe for the next
+% run.
+% \begin{macrocode}
+ \ifnum\arabic{@autobreak at subeqnindex}>1
+ \if at filesw
+% \end{macrocode}
+% We should provide \cs{@autobreak at setmaxlhswidth} in |.aux|.
+% \begin{macrocode}
+ \@ifundefined{@autobreak at auxinited}{%
+ \immediate\write\@mainaux{%
+ \string\providecommand
+ \string\@autobreak at setmaxlhswidth[2]{}%
+ }%
+ \gdef\@autobreak at auxinited{}%
+ }{}%
+ \immediate\write\@auxout{%
+ \string\@autobreak at setmaxlhswidth%
+ {\arabic{@autobreak at eqnindex}}%
+ {\the\@autobreak at realmaxlhswidth}%
+ }%
+ \fi
+ \fi
+ \fi
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Hacking \pkg{amsmath}}
+%
+% \begin{macrocode}
+\RequirePackage{amsmath}
+% \end{macrocode}
+%
+% \begin{macro}{\if at autobreak@newlinedef}
+% The switch to be turned on when \cs{@autobreak at newlinedef} applies.
+% \begin{macrocode}
+\newif\if at autobreak@newlinedef
+\@autobreak at newlinedeffalse
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at newlinedef}
+% Installs the definition of |^^M| as a space. This is virtually
+% harmless in math mode.
+% \begin{macrocode}
+\begingroup
+ \catcode`\^^M=\active
+ \gdef\@autobreak at newlinedef{%
+ \def^^M{ }%
+ \@autobreak at newlinedeftrue
+ }
+\endgroup
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\collect at body}
+% We need to override \cs{collect at body} such that it keeps |^^M|.
+% \begin{macrocode}
+\def\collect at body#1{%
+ \@envbody={\expandafter#1\expandafter{\the\@envbody}}%
+ \edef\process at envbody{%
+ \the\@envbody\noexpand\end{\@currenvir}%
+ }%
+ \@envbody=\@emptytoks
+ \def\begin at stack{b}%
+ \begingroup
+% \end{macrocode}
+% Actually, the following three lines need to be inserted to the
+% original code.
+% \begin{macrocode}
+ \if at autobreak@newlinedef
+ \catcode`\^^M=\active
+ \fi
+ \expandafter\let\csname\@currenvir\endcsname=\collect@@body
+ \edef\process at envbody{%
+ \expandafter\noexpand\csname\@currenvir\endcsname
+ }%
+ \process at envbody
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{environment}{align}
+% Hack \env{align} of \pkg{amsmath}.
+% \begin{macrocode}
+\let\@autobreak at oldstart@align=\start at align
+\def\start at align{%
+ \@autobreak at loadmaxlhswidth
+ \@autobreak at newlinedef
+ \@autobreak at oldstart@align
+}
+% \end{macrocode}
+% \begin{macrocode}
+\let\@autobreak at oldendalign=\endalign
+\def\endalign{%
+ \@autobreak at savemaxlhswidth
+ \@autobreak at oldendalign
+}
+% \end{macrocode}
+% \end{environment}
+%
+% \subsection{\env{autobreak} environment}
+%
+% \begin{environment}{autobreak}
+% Checks if we are in \env{align} (and \cs{@autobreak at newlinedef} is
+% applied), increments the counter and collects its body via
+% \cs{collect at body}.
+% \begin{macrocode}
+\newenvironment{autobreak}{%
+ \if at autobreak@newlinedef
+ \else
+ \PackageError{autobreak}{%
+ autobreak is not allowed here
+ }{%
+ Use autobreak inside align.
+ }%
+ \fi
+ \stepcounter{@autobreak at subeqnindex}%
+ \collect at body\@autobreak
+}{}
+% \end{macrocode}
+% \end{environment}
+%
+% \begin{macro}{\@autobreak}
+% Called from \cs{collect at body}. The parameter |#1| is the whole body.
+% It takes also |#2| and |#3|, which are always \cs{end} and
+% |autobreak|, to remove them from the successive tokens.
+% \begin{macrocode}
+\def\@autobreak#1#2#3{%
+% \end{macrocode}
+% First, close the group of \env{autobreak}.
+% \begin{macrocode}
+ \end{autobreak}%
+% \end{macrocode}
+% Then parse the given body of the environment and construct lines to be
+% passed to \env{align}.
+% \begin{macrocode}
+ \@autobreak at init
+ \def\@tempa{\expandafter\@autobreak at scanline
+ \@autobreak at newlinechar#1}%
+ \expandafter\@tempa\@autobreak at newlinechar\@autobreak at end
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at init}
+% Initialization.
+% \begin{macrocode}
+\def\@autobreak at init{%
+ \@autobreak at alltoks={}%
+ \@autobreak at linetoks={}%
+ \@autobreak at lhswidth=\z@
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at end}
+% Finalization. It generates the whole lines in one go.
+% \begin{macrocode}
+\def\@autobreak at end{%
+ \expandafter\@autobreak at addtoks\expandafter\@autobreak at alltoks
+ \expandafter{\the\@autobreak at linetoks}%
+ \the\@autobreak at alltoks
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at scanline}
+% Takes a line from the input stream. Here a line ends with |^^M|.
+% \begin{macrocode}
+\begingroup
+ \catcode`\^^M=\active
+ \gdef\@autobreak at scanline#1^^M{\@autobreak at scanline@{#1}}
+\endgroup
+% \end{macrocode}
+% If the next token is a punctuation, then we merge it into the current
+% line. (Otherwise it can make a line only with a period, for example).
+% \begin{macrocode}
+\def\@autobreak at scanline@#1{%
+ \@autobreak at ifnextpunct{%
+ \@autobreak at scanline@gobble{#1}%
+ }{%
+ \@autobreak at scanline@@{#1}%
+ }%
+}
+% \end{macrocode}
+% A helper macro of \cs{@ifnextpunct}\marg{if-yes}\marg{if-no}.
+% \begin{macrocode}
+\def\@autobreak at ifnextpunct#1#2{%
+ \@ifnextchar.{%
+ #1%
+ }{%
+ \@ifnextchar,{%
+ #1%
+ }{%
+ \@ifnextchar;{%
+ #1%
+ }{%
+ \@ifnextchar:{%
+ #1%
+ }{%
+ #2%
+ }%
+ }%
+ }%
+ }%
+}
+% \end{macrocode}
+% Merge punctuations as possible (usually there is only one period in a
+% line, though).
+% \begin{macrocode}
+\def\@autobreak at scanline@gobble#1#2{%
+ \@autobreak at ifnextpunct{%
+ \@autobreak at scanline@gobble{#1#2}%
+ }{%
+ \@autobreak at scanline@@{#1#2}%
+ }%
+}
+% \end{macrocode}
+% Pass the current line to \cs{@autobreak at processline}. Then, repeat
+% scanning lines until \cs{@autobreak at end} appears as the next token.
+% \begin{macrocode}
+\def\@autobreak at scanline@@#1{%
+ \@autobreak at processline{#1}%
+ \@ifnextchar\@autobreak at end{}{%
+ \@autobreak at scanline@@@
+ }%
+}
+% \end{macrocode}
+% One may expect \cs{input}\marg{file} in \env{autobreak} is expanded by
+% the file content and \env{autobreak} treats new lines in it correctly.
+% But it needs more work. Because handling of \cs{input} in the middle
+% of the lines is rather involved, for now we support only \cs{input} at
+% the beginning of each line (which is what sane people usually do).
+% This can be done via the \pkg{catchfile} package.
+% \begin{macrocode}
+\IfFileExists{catchfile.sty}{
+ \RequirePackage{catchfile}
+ \def\@autobreak at scanline@@@{%
+ \@ifnextchar\input{%
+ \@autobreak at scanline@input
+ }{%
+ \@autobreak at scanline
+ }%
+ }
+}{
+ \def\@autobreak at scanline@@@{%
+ \@ifnextchar\input{%
+ \PackageWarning{autobreak}{%
+ Cannot handle new lines in a file via \protect\input,
+ \MessageBreak which requires the catchfile package
+ }%
+ }%
+ \@autobreak at scanline
+ }
+}
+% \end{macrocode}
+% The argument |#1| is \cs{input} and |#2| is the file name.
+% \begin{macrocode}
+\def\@autobreak at scanline@input#1#2{%
+ \CatchFileDef\@tempa{#2}{\catcode`\^^M=\active}%
+ \expandafter\@autobreak at scanline\@tempa
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at processline}
+% Each line from \cs{autobreak at scanline} should be regarded as a `block'
+% in the equation. The first block (typically the left-hand side $+$
+% `=') determines the indentation for the successive lines. From the
+% second block, try to append the block to the end of the line and
+% insert a line break if it does not fit in a line.
+% \begin{macrocode}
+\def\@autobreak at processline#1{%
+ \ifdim\@autobreak at lhswidth=\z@
+% \end{macrocode}
+% For the first block. The rest of the width for the right-hand sides
+% is determined from \cs{linewidth} and \cs{@autobreak at maxlhswidth}.
+% \begin{macrocode}
+ \@autobreak at settowidth\@autobreak at lhswidth{#1}%
+ \ifdim\@autobreak at lhswidth>\z@
+ \ifdim\@autobreak at lhswidth>\@autobreak at maxlhswidth
+ \ifdim\@autobreak at maxlhswidth>\z@
+% \end{macrocode}
+% The previous one used the wrong value of \cs{@autobreak at maxlhswidth}
+% (was too short). Need to rerun.
+% \begin{macrocode}
+ \global\@autobreak at invalidlayouttrue
+ \fi
+ \global\@autobreak at maxlhswidth=\@autobreak at lhswidth
+ \fi
+ \ifdim\@autobreak at lhswidth>\@autobreak at realmaxlhswidth
+ \global\@autobreak at realmaxlhswidth=\@autobreak at lhswidth
+ \fi
+ \@autobreak at maxrhswidth=\linewidth
+ \advance\@autobreak at maxrhswidth by -\@autobreak at maxlhswidth
+ \advance\@autobreak at maxrhswidth by -\@autobreak at sp
+ \@autobreak at alltoks={#1{}&}%
+ \fi
+ \else
+% \end{macrocode}
+% For the rest of the blocks.
+% \begin{macrocode}
+ \@autobreak at settowidth\@autobreak at rhswidth
+ {\the\@autobreak at linetoks#1\the\everybeforeautobreak}%
+ \ifdim\@autobreak at rhswidth>\@autobreak at maxrhswidth
+% \end{macrocode}
+% Adding the next block gives an overfull line. Need a line break.
+% \begin{macrocode}
+ \edef\@tempa{\the\@autobreak at linetoks\the\everybeforeautobreak}%
+ \expandafter\@autobreak at addtoks\expandafter\@autobreak at alltoks
+ \expandafter{\@tempa\notag\\&}%
+ \@autobreak at linetoks=\everyafterautobreak
+ \fi
+ \@autobreak at addtoks\@autobreak at linetoks{#1}%
+ \fi
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at addtoks}
+% Appends |#2| to the token register |#1|.
+% \begin{macrocode}
+\def\@autobreak at addtoks#1#2{%
+ #1=\expandafter{\the#1#2}%
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@autobreak at settowidth}
+% Same as \cs{settowidth} but in math mode. We assume \cs{displaystyle}.
+% (Anyway \env{align} issues \cs{displaystyle} at the beginning of every
+% cell.)
+% \begin{macrocode}
+\def\@autobreak at settowidth#1#2{%
+ \settowidth#1{$\displaystyle#2$}%
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macrocode}
+%</package>
+% \end{macrocode}
+% \Finale
+\endinput
Property changes on: trunk/Master/texmf-dist/source/latex/autobreak/autobreak.dtx
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: trunk/Master/texmf-dist/source/latex/autobreak/autobreak.ins
===================================================================
--- trunk/Master/texmf-dist/source/latex/autobreak/autobreak.ins (rev 0)
+++ trunk/Master/texmf-dist/source/latex/autobreak/autobreak.ins 2016-06-20 22:24:28 UTC (rev 41507)
@@ -0,0 +1,70 @@
+%%
+%% This is file `autobreak.ins',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% autobreak.dtx (with options: `install')
+%%
+%% This is a generated file.
+%%
+%% Copyright (C) 2016 by Takahiro Ueda <tueda at nikhef.nl>
+%%
+%% This file may be distributed and/or modified under the conditions of
+%% the LaTeX Project Public License, either version 1.3 of this license
+%% or (at your option) any later version. The latest version of this
+%% license is in:
+%%
+%% http://www.latex-project.org/lppl.txt
+%%
+%% and version 1.3 or later is part of all distributions of LaTeX
+%% version 2005/12/01 or later.
+%%
+
+\input docstrip.tex
+\keepsilent
+\askforoverwritefalse
+\preamble
+
+This is a generated file.
+
+Copyright (C) 2016 by Takahiro Ueda <tueda at nikhef.nl>
+
+This file may be distributed and/or modified under the conditions of
+the LaTeX Project Public License, either version 1.3 of this license
+or (at your option) any later version. The latest version of this
+license is in:
+
+ http://www.latex-project.org/lppl.txt
+
+and version 1.3 or later is part of all distributions of LaTeX
+version 2005/12/01 or later.
+
+\endpreamble
+
+\generate{
+ \usedir{tex/latex/autobreak}
+ \file{\jobname.sty}{\from{\jobname.dtx}{package}}
+}
+
+
+\obeyspaces
+\Msg{*************************************************************}
+\Msg{* *}
+\Msg{* To finish the installation you have to move the following *}
+\Msg{* file into a directory searched by TeX: *}
+\Msg{* *}
+\Msg{* autobreak.sty *}
+\Msg{* *}
+\Msg{* To produce the documentation run the file autobreak.dtx *}
+\Msg{* through LaTeX. *}
+\Msg{* *}
+\Msg{* Happy TeXing! *}
+\Msg{* *}
+\Msg{*************************************************************}
+
+\endbatchfile
+
+\endinput
+%%
+%% End of file `autobreak.ins'.
Added: trunk/Master/texmf-dist/tex/latex/autobreak/autobreak.sty
===================================================================
--- trunk/Master/texmf-dist/tex/latex/autobreak/autobreak.sty (rev 0)
+++ trunk/Master/texmf-dist/tex/latex/autobreak/autobreak.sty 2016-06-20 22:24:28 UTC (rev 41507)
@@ -0,0 +1,266 @@
+%%
+%% This is file `autobreak.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% autobreak.dtx (with options: `package')
+%%
+%% This is a generated file.
+%%
+%% Copyright (C) 2016 by Takahiro Ueda <tueda at nikhef.nl>
+%%
+%% This file may be distributed and/or modified under the conditions of
+%% the LaTeX Project Public License, either version 1.3 of this license
+%% or (at your option) any later version. The latest version of this
+%% license is in:
+%%
+%% http://www.latex-project.org/lppl.txt
+%%
+%% and version 1.3 or later is part of all distributions of LaTeX
+%% version 2005/12/01 or later.
+%%
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{autobreak}%
+ [2016/06/03 v0.1 simple line breaking of long formulae]
+\newtoks\everybeforeautobreak
+\newtoks\everyafterautobreak
+\newtoks\@autobreak at alltoks
+\newtoks\@autobreak at linetoks
+\newdimen\@autobreak at lhswidth
+\newdimen\@autobreak at rhswidth
+\newdimen\@autobreak at maxlhswidth
+\newdimen\@autobreak at realmaxlhswidth
+\newdimen\@autobreak at maxrhswidth
+\def\@autobreak at sp{7\p@}
+\begingroup
+ \catcode`\^^M=\active
+ \gdef\@autobreak at newlinechar{^^M}
+\endgroup
+\newif\if at autobreak@invalidlayout
+\@autobreak at invalidlayoutfalse
+\AtEndDocument{%
+ \if at autobreak@invalidlayout
+ \if at filesw
+ \PackageWarningNoLine{autobreak}{Layout may have changed.
+ \MessageBreak Rerun to get layout correct}%
+ \else
+ \PackageWarningNoLine{autobreak}{Layout may be wrong}%
+ \fi
+ \fi
+}
+\def\@autobreak at getmaxlhswidth#1{%
+ \@ifundefined{@autobreak at w@#1}{%
+ \z@
+ }{%
+ \@nameuse{@autobreak at w@#1}%
+ }%
+}
+\def\@autobreak at setmaxlhswidth#1#2{%
+ \global\@namedef{@autobreak at w@#1}{#2}%
+}
+\newcounter{@autobreak at eqnindex}
+ \newcounter{@autobreak at subeqnindex}[@autobreak at eqnindex]%
+\def\@autobreak at loadmaxlhswidth{%
+ \stepcounter{@autobreak at eqnindex}%
+ \@autobreak at maxlhswidth=%
+ \@autobreak at getmaxlhswidth{\arabic{@autobreak at eqnindex}}%
+ \@autobreak at realmaxlhswidth=\z@
+}
+\def\@autobreak at savemaxlhswidth{%
+ \ifnum\arabic{@autobreak at subeqnindex}>0
+ \ifdim\@autobreak at maxlhswidth=\@autobreak at realmaxlhswidth
+ \else
+ \global\@autobreak at invalidlayouttrue
+ \fi
+ \ifnum\arabic{@autobreak at subeqnindex}>1
+ \if at filesw
+ \@ifundefined{@autobreak at auxinited}{%
+ \immediate\write\@mainaux{%
+ \string\providecommand
+ \string\@autobreak at setmaxlhswidth[2]{}%
+ }%
+ \gdef\@autobreak at auxinited{}%
+ }{}%
+ \immediate\write\@auxout{%
+ \string\@autobreak at setmaxlhswidth%
+ {\arabic{@autobreak at eqnindex}}%
+ {\the\@autobreak at realmaxlhswidth}%
+ }%
+ \fi
+ \fi
+ \fi
+}
+\RequirePackage{amsmath}
+\newif\if at autobreak@newlinedef
+\@autobreak at newlinedeffalse
+\begingroup
+ \catcode`\^^M=\active
+ \gdef\@autobreak at newlinedef{%
+ \def^^M{ }%
+ \@autobreak at newlinedeftrue
+ }
+\endgroup
+\def\collect at body#1{%
+ \@envbody={\expandafter#1\expandafter{\the\@envbody}}%
+ \edef\process at envbody{%
+ \the\@envbody\noexpand\end{\@currenvir}%
+ }%
+ \@envbody=\@emptytoks
+ \def\begin at stack{b}%
+ \begingroup
+ \if at autobreak@newlinedef
+ \catcode`\^^M=\active
+ \fi
+ \expandafter\let\csname\@currenvir\endcsname=\collect@@body
+ \edef\process at envbody{%
+ \expandafter\noexpand\csname\@currenvir\endcsname
+ }%
+ \process at envbody
+}
+\let\@autobreak at oldstart@align=\start at align
+\def\start at align{%
+ \@autobreak at loadmaxlhswidth
+ \@autobreak at newlinedef
+ \@autobreak at oldstart@align
+}
+\let\@autobreak at oldendalign=\endalign
+\def\endalign{%
+ \@autobreak at savemaxlhswidth
+ \@autobreak at oldendalign
+}
+\newenvironment{autobreak}{%
+ \if at autobreak@newlinedef
+ \else
+ \PackageError{autobreak}{%
+ autobreak is not allowed here
+ }{%
+ Use autobreak inside align.
+ }%
+ \fi
+ \stepcounter{@autobreak at subeqnindex}%
+ \collect at body\@autobreak
+}{}
+\def\@autobreak#1#2#3{%
+ \end{autobreak}%
+ \@autobreak at init
+ \def\@tempa{\expandafter\@autobreak at scanline
+ \@autobreak at newlinechar#1}%
+ \expandafter\@tempa\@autobreak at newlinechar\@autobreak at end
+}
+\def\@autobreak at init{%
+ \@autobreak at alltoks={}%
+ \@autobreak at linetoks={}%
+ \@autobreak at lhswidth=\z@
+}
+\def\@autobreak at end{%
+ \expandafter\@autobreak at addtoks\expandafter\@autobreak at alltoks
+ \expandafter{\the\@autobreak at linetoks}%
+ \the\@autobreak at alltoks
+}
+\begingroup
+ \catcode`\^^M=\active
+ \gdef\@autobreak at scanline#1^^M{\@autobreak at scanline@{#1}}
+\endgroup
+\def\@autobreak at scanline@#1{%
+ \@autobreak at ifnextpunct{%
+ \@autobreak at scanline@gobble{#1}%
+ }{%
+ \@autobreak at scanline@@{#1}%
+ }%
+}
+\def\@autobreak at ifnextpunct#1#2{%
+ \@ifnextchar.{%
+ #1%
+ }{%
+ \@ifnextchar,{%
+ #1%
+ }{%
+ \@ifnextchar;{%
+ #1%
+ }{%
+ \@ifnextchar:{%
+ #1%
+ }{%
+ #2%
+ }%
+ }%
+ }%
+ }%
+}
+\def\@autobreak at scanline@gobble#1#2{%
+ \@autobreak at ifnextpunct{%
+ \@autobreak at scanline@gobble{#1#2}%
+ }{%
+ \@autobreak at scanline@@{#1#2}%
+ }%
+}
+\def\@autobreak at scanline@@#1{%
+ \@autobreak at processline{#1}%
+ \@ifnextchar\@autobreak at end{}{%
+ \@autobreak at scanline@@@
+ }%
+}
+\IfFileExists{catchfile.sty}{
+ \RequirePackage{catchfile}
+ \def\@autobreak at scanline@@@{%
+ \@ifnextchar\input{%
+ \@autobreak at scanline@input
+ }{%
+ \@autobreak at scanline
+ }%
+ }
+}{
+ \def\@autobreak at scanline@@@{%
+ \@ifnextchar\input{%
+ \PackageWarning{autobreak}{%
+ Cannot handle new lines in a file via \protect\input,
+ \MessageBreak which requires the catchfile package
+ }%
+ }%
+ \@autobreak at scanline
+ }
+}
+\def\@autobreak at scanline@input#1#2{%
+ \CatchFileDef\@tempa{#2}{\catcode`\^^M=\active}%
+ \expandafter\@autobreak at scanline\@tempa
+}
+\def\@autobreak at processline#1{%
+ \ifdim\@autobreak at lhswidth=\z@
+ \@autobreak at settowidth\@autobreak at lhswidth{#1}%
+ \ifdim\@autobreak at lhswidth>\z@
+ \ifdim\@autobreak at lhswidth>\@autobreak at maxlhswidth
+ \ifdim\@autobreak at maxlhswidth>\z@
+ \global\@autobreak at invalidlayouttrue
+ \fi
+ \global\@autobreak at maxlhswidth=\@autobreak at lhswidth
+ \fi
+ \ifdim\@autobreak at lhswidth>\@autobreak at realmaxlhswidth
+ \global\@autobreak at realmaxlhswidth=\@autobreak at lhswidth
+ \fi
+ \@autobreak at maxrhswidth=\linewidth
+ \advance\@autobreak at maxrhswidth by -\@autobreak at maxlhswidth
+ \advance\@autobreak at maxrhswidth by -\@autobreak at sp
+ \@autobreak at alltoks={#1{}&}%
+ \fi
+ \else
+ \@autobreak at settowidth\@autobreak at rhswidth
+ {\the\@autobreak at linetoks#1\the\everybeforeautobreak}%
+ \ifdim\@autobreak at rhswidth>\@autobreak at maxrhswidth
+ \edef\@tempa{\the\@autobreak at linetoks\the\everybeforeautobreak}%
+ \expandafter\@autobreak at addtoks\expandafter\@autobreak at alltoks
+ \expandafter{\@tempa\notag\\&}%
+ \@autobreak at linetoks=\everyafterautobreak
+ \fi
+ \@autobreak at addtoks\@autobreak at linetoks{#1}%
+ \fi
+}
+\def\@autobreak at addtoks#1#2{%
+ #1=\expandafter{\the#1#2}%
+}
+\def\@autobreak at settowidth#1#2{%
+ \settowidth#1{$\displaystyle#2$}%
+}
+\endinput
+%%
+%% End of file `autobreak.sty'.
Property changes on: trunk/Master/texmf-dist/tex/latex/autobreak/autobreak.sty
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Modified: trunk/Master/tlpkg/bin/tlpkg-ctan-check
===================================================================
--- trunk/Master/tlpkg/bin/tlpkg-ctan-check 2016-06-20 22:23:22 UTC (rev 41506)
+++ trunk/Master/tlpkg/bin/tlpkg-ctan-check 2016-06-20 22:24:28 UTC (rev 41507)
@@ -49,7 +49,7 @@
assignment assoccnt astro asyfig
asymptote-faq-zh-cn asymptote-by-example-zh-cn asymptote-manual-zh-cn
asypictureb attachfile
- aucklandthesis augie auncial-new aurical autopdf
+ aucklandthesis augie auncial-new aurical autobreak autopdf
authoraftertitle authorindex
auto-pst-pdf autoarea automata autonum autosp avantgar avremu
b1encoding babel
Added: trunk/Master/tlpkg/tlpsrc/autobreak.tlpsrc
===================================================================
Modified: trunk/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc
===================================================================
--- trunk/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc 2016-06-20 22:23:22 UTC (rev 41506)
+++ trunk/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc 2016-06-20 22:24:28 UTC (rev 41507)
@@ -6,6 +6,7 @@
#
depend 12many
depend amstex
+depend autobreak
depend backnaur
depend begriff
depend binomexp
More information about the tex-live-commits
mailing list