* trick
@ 2008-12-11 12:07 Hans Hagen
0 siblings, 0 replies; only message in thread
From: Hans Hagen @ 2008-12-11 12:07 UTC (permalink / raw)
To: mailing list for ConTeXt users, Aditya Mahajan
The next trick is dedicated to Aditya ...
% engine=luatex
\unprotect
\def\Hack#1#2%
{\pdfliteral{/Span << /ActualText
<\ctxlua{pdf.hexify(\!!bs\detokenize{#1}\!!es)}> >> BDC}#2\pdfliteral{EMC}}
\protect
\def\Formula#1{\Hack{#1}{$#1$}}
\startTEXpage[offset=3pt]
test \Formula{e + a = mc^2 + \alpha} test
\blank[2*big]
\Formula{e + a = mc^2 + \alpha}
\blank[2*big]
$e + a = mc^2 + \alpha$
\stopTEXpage
\stoptext
try to cut and paste the math ... (only acrobat and actually acrobat is
a bit bugged in this respect but the idea is there)
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