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somedefs.sty
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1994-06-09
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2KB
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56 lines
%%
%% This is file `somedefs.sty', generated
%% on <1994/6/9> with the docstrip utility (2.2h).
%%
%% The original source files were:
%%
%% somedefs.dtx (with options: `package')
%%
%% IMPORTANT NOTICE:
%% This file is part of the `tools' bundle
%% in the LaTeX2e distribution.
%%
%% You are not allowed to distribute this file.
%% For distribution of the original source see
%% the copyright notice in the source file, and
%% in the file readme.txt distributed with the
%% tools bundle.
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{somedefs}[1994/06/01 Toolkit for optional definitions]
\def\UseSomeDefinitions{%
\let\ProvidesDefinition\@providesdefinition
}
\def\UseAllDefinitions{%
\let\ProvidesDefinition\@firstofone
}
\def\UseDefinition#1{%
\expandafter\let\csname#1\endcsname\@unprovided@definition
}
\def\ProvidesDefinition#1{%
\PackageError{somedefs}%
{No \noexpand\UseSomeDefinitions or \string\UseAllDefinitions}%
{The package which used the `somedefs' package has an error.}%
}
\def\@providesdefinition#1{\@provides@definition#1\relax
\@provides@definition}
\def\@provides@definition#1#2#3\@provides@definition{%
\ifx#2\@unprovided@definition
#1#2#3%
\fi
}
\def\@unprovided@definition{%
\PackageError{somedefs}%
{Package `somedefs' error: this command was never defined}%
{You have requested a command which does not exist.}%
}
\@onlypreamble\UseSomeDefinitions
\@onlypreamble\UseAllDefinitions
\@onlypreamble\UseDefinition
\@onlypreamble\ProvidesDefinition
\@onlypreamble\@providesdefinition
\@onlypreamble\@provides@definition
\endinput
%%
%% End of file `somedefs.sty'.