groff version 1.18.1 and emacs

groff version 1.18.1 and emacs

[lurwas]

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In GNU Emacs 21.2.1 (i686-pc-linux-gnu, X toolkit)
 of 2002-10-12 on chiana
configured using `configure  --build=i686-pc-linux-gnu --prefix=/usr --sysconfdir=/etc --localstatedir=/var --infodir=/usr/share/info --mandir=/usr/share/man --with-gif --with-jpeg --with-tiff --with-png --with-x --with-xpm'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: 
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

groff version 1.18.1 gives wrongly formatted man-pages, thus not letting emacs display
escape sequences correctly. With earlier groff versions, it works. Setting  '(Man-fontify-manpage-flag nil) in my .emacs file is a way around this problem, but it's kind of ugly.


Recent input:
SPC 1 . 8 . 1 <backspace> <backspace> 1 <backspace> 
<backspace> 1 8 . 1 SPC a n d SPC e m a c s <return> 
C-p C-p C-p C-p C-p C-p C-n C-n C-n C-n C-n C-n C-x 
k <return> C-x o C-x k <return> C-x o M-x r e p o <tab> 
C-g M-x r e p o r t - b u <tab> <backspace> <backspace> 
<backspace> <tab> - b u <tab> <tab> g <tab> <return> 
C-g M-x r e p o r t - e m <tab> - b u <tab> <backspace> 
<backspace> <backspace> b <tab> <return>

Recent messages:
Buffers have changed; type g to update Ibuffer
isearch-abort: Quit
Mark saved where search started
Using erc-try-complete-nick [2 times]
No expansion found [3 times]
call-interactively: Quit
Making completion list...
Loading emacsbug...done
Making completion list...
call-interactively: Quit [2 times]

Re: groff version 1.18.1 and emacs

[Eli Zaretskii]

> From: lurwas <lurwas@moya.dnsalias.net>
> Date: Mon, 18 Nov 2002 13:26:32 +0100 (CET)
> 
> groff version 1.18.1 gives wrongly formatted man-pages, thus not
> letting emacs display escape sequences correctly. With earlier groff
> versions, it works.

Probably because Groff 1.18 produces SGR color escape sequences which
the filter used by Emacs doesn't strip.

A workaround would be to set the environment variable that disables
the SGR escapes in Groff's output.  This could be done in man.el, just
before it runs `man' in the background.  Sorry, I don't remember the
name of the environment variable that does this, but I'm sure it's
documented somewhere in the Groff manual.