Re: (dsssl) Double-dash sign and TeX backend

[Sebastian Rahtz <sebastian.rahtz@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

David Carlisle writes:
 > Safer to use -\kern\z@ as {} doesn't normally supress ligatures
 > (although it will in this case as - isn't (normally) a letter.
 > 
 > I thought jadetex had some code for this already, Sebastian?

Only in recent openjade releases, I think. i fear many people do not
use the current jade. I cannot trap this in jadetex itself


 > something like this in jadetex.cfg (untested)
 > 
 > \let\origminus-
 > \catcode`\-\active
 > \AtBeginDocument{\def-{\origminus\kern\z@}}
 > \catcode`\-12\relax
if it works in generality, I shall be more than slightly amazed....

 > An alternative is to fix the problem at source, and generate a modified
 > set of tex font metrics which don't have the annoying -- ligaure.
 > (This is fairly easy, just run tfm to pl, edit the ligature table to
 > delete the offending line, and convert it back to a tfm)

right. thats what I'd do if I had the problem. but it is a bit TeXnical...

sebastian


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