[texhax] A sign-change puzzle
pierre.mackay at comcast.net
Sun Dec 10 22:36:49 CET 2006
Your answer inspired me to dig really deep, and ultimately to discover
what I did wrong.
After some fretting, I have come up with this. which does the right
thing by letters, numbers and punctuation marks.
(They want them letterspaced too.) Then I made sure that I could also
include control sequences.
Thank you for giving me the push to get it right at last.
\else\kern-\letterspacing#1 % When a character is immediately
% followed by control sequence, cancel
% the previous letterspace
\leavevmode\hskip 8.45pc\vrule height 1pc width 1pc % To measure the
space left by \kr
Again many thanks
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