bachotex2005-petr-olsak-pearl2.tex
bachotex2005-petr-olsak-pearl2.tex
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TeX document,
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%%% Petr Ol\v{s}\'ak: Testing whether two characters form a ligature
\newif\ifligature
\def\testligature #1#2{\setbox0=\hbox{%
\thickmuskip=1000mu \textfont0=\the\font
$\mathchar`#1 \mathrel\mathchar`#2$}%
\ifdim\wd0>500pt \ligaturefalse \else \ligaturetrue \fi}
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