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Diffstat (limited to 'info/examples/tex-in-practice/dblarg.tip')
-rw-r--r-- | info/examples/tex-in-practice/dblarg.tip | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/info/examples/tex-in-practice/dblarg.tip b/info/examples/tex-in-practice/dblarg.tip new file mode 100644 index 0000000000..463c2b51c7 --- /dev/null +++ b/info/examples/tex-in-practice/dblarg.tip @@ -0,0 +1,26 @@ +% This macro source file is from the four volume series +% "TeX in Practice" by Stephan von Bechtolsheim, published +% 1993 by Springer-Verlag, New York. +% Copyright 1993 Stephan von Bechtolsheim. +% No warranty or liability is assumed. +% This macro may be copied freely if no fees other than +% media cost or shipping charges are charged and as long +% as this copyright and the following source code itself +% is not changed. Please see the series for further information. +% +% Version: 1.0 +% Date: May 1, 1993 +% +% +% This source code is documented in 23.4.4.2, p. III-258. +% Original source in file "macros3.TEX", starting line 1127. +\wlog{L: "dblarg.tip" ["macros3.TEX," l. 1127, p. III-258]}% +% This file DOES belong to format "texip." +\InputD{futlet.tip} +\catcode`\@ = 11 +\def\DblArg #1{% + \def\@DblArgTemp{#1}% + \DoFutureLet{\ifx}{[}{\@DblArgTemp}{\@DblArgB}% +} +\def\@DblArgB #1{\@DblArgTemp[#1]{#1}} +\catcode`\@ = 12 |