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[Devel] { and } troff output commands


From: Werner LEMBERG
Subject: [Devel] { and } troff output commands
Date: Mon, 08 Jan 2001 14:34:04 +0100 (CET)

Dear friends,


from time to time I find new, undocumented stuff in groff.  The latest
two things are the troff output commands `{' and `}' which push
resp. pop the output environment.  It can be found in
src/libs/libdriver/input.cc, line 230ff.

Apparently, it isn't used by GNU troff.  According to the log file,
this has always been in the code (at least since the ChangeLog file
exists).

Is there a program which uses this feature?


    Werner



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