% 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