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Diffstat (limited to 'info/examples/tex-in-practice/testsubs.tip')
-rw-r--r-- | info/examples/tex-in-practice/testsubs.tip | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/info/examples/tex-in-practice/testsubs.tip b/info/examples/tex-in-practice/testsubs.tip new file mode 100644 index 0000000000..dc5bcf2691 --- /dev/null +++ b/info/examples/tex-in-practice/testsubs.tip @@ -0,0 +1,42 @@ +% 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 24.1.15.1, p. III-293. +% Original source in file "macros4.TEX", starting line 661. +\wlog{L: "testsubs.tip" ["macros4.TEX," l. 661, p. III-293]}% +% This file DOES belong to format "texip." +\InputD{showx.tip} +\catcode`\@ = 11 +\newif\if@TestSubString +\def\SubStringConditional #1#2{% + TT\fi + \edef\@MainString{#1}% + \edef\@SubStringConditionalTemp{{#1}{#2}}% + \expandafter\@SubStringConditional\@SubStringConditionalTemp +} +\def\@SubStringConditional #1#2{% + \def\@TestSubS ##1#2##2\@Del{% + \def\@TestTemp{##1}% + }% + \ShowX{\@TestSubS}% + \@TestSubS #1#2\@Del + \ShowX{\@TestTemp}% + \ifx\@MainString\@TestTemp + \@TestSubStringfalse + \else + \@TestSubStringtrue + \fi + \if@TestSubString +} +\catcode`\@ = 12 |