NAME

       texdiff - Compares two (La)TeX documents to create a merged version showing changes, similar to that of
       'Change Tracking' in some word processors.

SYNOPSIS

       texdiff [--nofloats⎪-n] old.tex new.tex [diff.tex]

DESCRIPTION

       The first two files are compared and a new TeX file is output. When the output file is processed with
       (La)TeX it marks new changes with blue and old text with red with a strike-through line. Furthermore,
       passages with changes are marked at the margin with grey bars by the LaTeX "changebar" package (although
       only after running "dvips", in "xdvi" the bars are one inch too far left to compensate the one inch
       offset inserted by TeX printer drivers).

       "texdiff" uses and therefore requires the "wdiff" command to insert these marks. If LaTeX macros are
       included in those striked out or underlined passages, the latex run will most likely fail. The source of
       most problems lies in "wdiff" tearing apart pairs of braces. Therefore "texdiff" is a perl script that
       calls "wdiff" internally and fixes "wdiff"'s output by re-pairing braces again and handling some commonly
       used LaTeX macros.

       For texdiff to work, the following LaTeX code must be inserted in the preamble of the LaTeX document:

        \usepackage{xcolor} \usepackage{ulem} \usepackage{changebar}
        \newcommand\TLSins[1]{\cbstart{}\textcolor{ins}{\uline{#1}}\cbend{}}
        \newcommand\TLSdel[1]{\cbdelete{}\textcolor{del}{\sout{#1}}}

       Define editing colors "ins" and "del" with existing "xcolor" color names:
        \colorlet{ins}{blue} \colorlet{del}{red}

       Or from scratch:
        \definecolor{ins}{rgb}{0, 0.5, 0}

       These macros are NOT automatically interted at \begin{document} like the original scripts did (see the
       ACKNOWLEDGMENTS section below), because this will not work on files of a multi-file document (those
       included by \include or \input).  Furthermore, if you insert the macros manually, you can tune them as
       you like, i. e. change text color or position of changebars. Have a look at the documentation of the ulem
       and changebar packages on how to do this!

OPTIONS

       --nofloats, -n
           If given, skips contents of figure environments, but does show insertions and deletions in the
           caption commands. This is done to avoid complex messups in subfloat or complex figure environments.

       --debug, -d
           Turns on debugging. Temporary files that contain numbered braces are kept and a raw difference file
           is written as output file name appended with '-wdiff.tex'. In addition, several regular expression
           diagnostics are printed. Warning: produces a lot of output.

AUTHOR

       Mark Doll <markdoll<AT>gmx.net>, Cengiz Gunay <cengique<AT>users.sf.net>.

ACKNOWLEDGMENTS

       *   Version 0.4, by CG, 2009/09/15. Added use of GetOpt to take an optional parameter to skip float
           (e.g., figure or table) contents. Added an optional debug mode. Embedded POD documentation. Fixed
           problem with insertion and deletions appearing in the middle of sectioning commands by throwing off
           LaTeX.

       *   Version 0.3, modified by Cengiz Gunay <cengique@users.sf.net>, 2009/06/30. Added some Latex commands
           that should be excluded and fixed handling of '\%' characters.

       *   Version 0.2, is a perl implementation of TeXdiff by Mark Doll <markdoll@gmx.net>, 2006/08/09. It was
           derived from the original bash and perl scripts created by Robert Maron <robmar@mimuw.edu.pl>,
           available at http://www.robmar.net/TexDiff/. This version of texdiff is available at
           http://mark.doll.name/texdiff/.

COPYRIGHT AND LICENSE

       Copyleft 2006-2009, Mark Doll and Cengiz Gunay

       This library is free software; you may redistribute it and/or modify it under the same terms as Perl
       itself.