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authorKarl Berry <karl@freefriends.org>2006-08-27 18:16:22 +0000
committerKarl Berry <karl@freefriends.org>2006-08-27 18:16:22 +0000
commit4ab3220f33f1983f5aff7b7253ad229e44c952fe (patch)
treec9d2408cfe8c113537c0031bc7e50bda98a262dc /Master/texmf-dist/tex/latex/base/texsys.cfg
parent6e05e1819838930d7f7e4eb36620d2994a45b97b (diff)
latex core update from latex-tds (27aug06)
git-svn-id: svn://tug.org/texlive/trunk@2043 c570f23f-e606-0410-a88d-b1316a301751
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-% \subsection{texsys.cfg}
-%
-% This file contains the site specific definitions of the four macros\\
-% |\@currdir|, |\input@path|, |\filename@parse| and |\@TeXversion|.
-%
-% As distributed it only contains comments, however this `empty'
-% file will work on many systems because of the automatic tests built
-% into |ltdirchk.dtx|. You \emph{are} allowed to edit this file to add
-% definitions of these macros appropriate to your system.
-%
-%
-% The macros that must be defined are:
-%
-% \DescribeMacro{\@currdir}
-% |\@currdir|\meta{filename}\meta{space} should expand to a form of the
-% filename that uniquely refers to the `current directory' if this is
-% possible. (The expansion should also end with a space.) on UNIX,
-% this is |\def\@currdir{./}|. For more exotic operating systems you may
-% want to make |\@currdir| a macro with arguments delimited by |.|
-% and/or \meta{space}. If the operating system has no concept of
-% directory structure, this macro should be defined to be empty.
-%
-%
-% \DescribeMacro{\input@path}
-% If the primitive |\openin| searches the same directories as the
-% primitive |\input|, then it is possible to tell (using |\ifeof|)
-% whether a file exists before trying to input it. For systems like
-% this, |\input@path| should be left undefined.
-%
-% If |\openin| does not `follow' |\input| then |\input@path| must be
-% defined to be a list of directories to search for input files. The
-% format for each directory is as for |\@currdir|, normally just a
-% prefix is required, but it may be a macro with space-delimited
-% argument. That is, if \meta{dir} is an entry in the input path,
-% \TeX will try to load the expansion of
-%
-% \meta{dir}\meta{filename}\meta{space}
-%
-% So either \meta{dir} should be defined as a macro with argument
-% delimited by space, or it should just expand to a directory name,
-% including the final directory separator, so that it may be
-% concatenated with the \meta{filename}. This means that for UNIX-like
-% syntax, each \meta{dir} should end with a slash, |/|. One exception to
-% this rule is that the input path should \emph{always} contain the
-% empty directory |{}| as this will allow `full pathnames' to be used,
-% and the `current directory' to be searched.
-%
-% |\input@path| should expand to a list of such directories, each in a
-% |{}| group.
-%
-%
-% \DescribeMacro{\filename@parse}
-% After a call of the form: |\filename@parse{|\meta{filename}|}|, the
-% three macros |\filename@area|,|\filename@base|,|\filename@ext| should
-% be defined to be the `area' (or directory), basename and
-% extension respectively. If there was no extension specified in
-% \meta{filename}, |\filename@ext| should be |\let| to |\relax| (so this
-% case may be tested with |\@ifundefined{filename@ext}| and, perhaps a
-% default extension substituted).
-%
-% Normally one would not need to define this macro in |texsys.cfg| as
-% the automatic tests can supply parsers that work with UNIX and VMS
-% syntax, as well as a basic parser that willcover many other cases.
-% However some operating systems may need a `hand produced' parser
-% in which case it should be defined in this file.
-%
-% The UNIX parser also works for most MSDOS \TeX\ versions.
-% Currently if the UNIX or VMS parser is not used, |\filename@parse| is
-% defined to always return an empty area, and to split the argument into
-% basename and extension at the first `|.|' that occurs in the name.
-% Parsers for other formats may be defined in |texsys.cfg|,
-% in which case they will be used in preference to the default
-% definitions.
-%
-%
-% \DescribeMacro{\@TeXversion}
-% You should not need to set this macro in |texsys.cfg|. \LaTeX\
-% tests to set this automatically. See the comments in the opening
-% section of \texttt{ltdirchk.dtx}.
-%
-%
-% The following sections give examples of definitions which might
-% work on various systems. These are currently mainly untested as I only
-% have access to a few systems, all of which do not need this file as
-% the automatic tests work. All the code is commented out.
-%
-% \subsection{UNIX (web2c)}
-% This implementation does make |\openin| and |\input| look in the same
-% places. Acceptable settings are made by |ltdirchk.dtx|, and so this
-% file may be empty. The definitions below are therefore just for
-% information.
-% \begin{macrocode}
-%\def\@currdir{./}
-%\let\input@path\@undefined
-% \end{macrocode}
-%
-% \subsection{UNIX (other)}
-% Apparently some commercial UNIX implementations have different paths
-% for |\openin| and |\input|. For these one could use definitions like
-% the following (with whatever directories are used at your site):
-% note that the directory names should end with |/|.
-% \begin{macrocode}
-% \def\@currdir{./}
-% \def\input@path{%
-% {/usr/local/lib/tex/inputs/distrib/}%
-% {/usr/local/lib/tex/inputs/contrib/}%
-% {/usr/local/lib/tex/inputs/local/}%
-% }
-% \end{macrocode}
-%
-% \subsection{MSDOS (emtex)}
-% This implementation does make |\openin| and |\input| look in the same
-% places. Acceptable settings are made by |ltdirchk.dtx|, and so this
-% file may be empty. The definitions below are therefore just for
-% information.
-% \begin{macrocode}
-% \def\@currdir{./}
-% \let\input@path\@undefined
-% \end{macrocode}
-%
-% \subsection{MSDOS (other)}
-% Some PC implementations have different paths
-% for |\openin| and |\input|. For these one could use definitions like
-% the following (with whatever directories are used at your site):
-% note that the directory names should end with |/|.
-% This assumes the implementation uses UNIX style |/| as the directory
-% separator.
-% \begin{macrocode}
-% \def\@currdir{./}
-% \def\input@path{%
-% {c:/tex/inputs/distrib/}%
-% {c:/tex/inputs/contrib/}%
-% {c:/tex/inputs/local/}%
-% }
-% \end{macrocode}
-%
-% \subsection{VMS (DECUS \TeX, PD VMS 3.6)}
-% This implementation does make |\openin| and |\input| look in the same
-% places. Acceptable settings are made by |ltdirchk.dtx|, and so this
-% file may be empty. The definitions below are therefore just for
-% information.
-% \begin{macrocode}
-% \def\@currdir{[]}
-% \let\input@path\@undefined
-% \end{macrocode}
-%
-% \subsection{VMS (???)}
-% Some VMS implementations have different paths
-% for |\openin| and |\input|. For these one could use definitions like
-% the following:
-% \begin{macrocode}
-% \def\@currdir{[]}
-% \def\input@path{%
-% {tex_inputs:}%
-% {SOMEDISK:[SOME.TEX.DIRECTORY]}%
-% }
-% \end{macrocode}
-%
-% \subsection{MACINTOSH (OzTeX 1.6)}
-% This implementation does make |\openin| and |\input| look in the same
-% places. Acceptable settings are made by |ltdirchk.dtx|, and so this
-% file may be empty. The definitions below are therefore just for
-% information.
-% \begin{macrocode}
-% \def\@currdir{:}
-% \let\input@path\@undefined
-% \end{macrocode}
-%
-% \subsection{MACINTOSH (other)}
-% Some Macintosh implementations have different paths
-% for |\openin| and |\input|. For these one could use definitions like
-% the following (with whatever folders are used on your machine):
-% note that the directory names should end with |:|, and they should
-% contain {\em no\/} spaces.
-% \begin{macrocode}
-% \def\@currdir{:}
-% \def\input@path{%
-% {Hard-Disk:Applications:TeX:TeX-inputs:}%
-% {Hard-Disk:Applications:TeX:My-inputs:}%
-% }
-% \end{macrocode}
-%
-% \subsection{FAKE EXAMPLE}
-% This example is for an operating system that has filenames of the
-% form |<area>name| For maximum compatability with macro sets,
-% you want |name.ext| to be mapped to |<ext>name|.
-% and |<area>name.ext| to be mapped to |<area.ext>name|.
-% |\input| does this mapping automatically, but |\openin| does not, and
-% does not look in the same places as |\input|.
-% |<>name| is the desired `current directory' syntax.
-%
-% the following code would possibly work:
-% \begin{macrocode}
-% \def\@dir#1#2 {%
-% \@d@r{#1}#2..\@nil}
-% \def\@d@r#1#2.#3.#4\@nil{%
-% <\ifx\@dir#1\@dir\else#1\ifx\@dir#3\@dir\else.\fi\fi#3>#2 }
-%
-% \def\@currdir{\@dir{}}
-% \def\input@path{%
-% {\@dir{area.one}}%
-% {\@dir{area.two}}%
-% }
-% \end{macrocode}