bug#3441: 23.0.94; *compilation* long lines painfully slow

[Marshall, Simon]

Guys, this is a follow-up to
http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=2223.  It
might not have anything to do with that bug at all - I was just going
back and seeing if that bug had been fixed.

Create a Makefile with the contents:

all:
        @echo [insert 5000 chars]

Run emacs -Q and do Tools > Compile... RET and I see Emacs create the
*compilation* window and insert chunks of the echo output.  23.0.94
takes 20+ seconds to complete it and is pretty much unusable during that
time.  22.3 takes 1 second.  Looking back at earlier pretests, this also
applies to 23.0.91.

Thanks, Simon.

In GNU Emacs 23.0.94.1 (sparc-sun-solaris2.8, Motif Version 2.1.0)
 of 2009-06-01 on risksun2
Windowing system distributor `Hummingbird Ltd.', version 11.0.100015
configured using `configure
'--x-includes=/usr/openwin/include:/usr/dt/include:/usr/local/include:/u
sr/local/X11/include'
'--x-libraries=/usr/openwin/lib:/usr/dt/lib:/usr/local/lib:/usr/local/X1
1/lib' '--with-x-toolkit=motif' '--with-jpeg=no' '--with-gif=no'
'--with-tiff=no' 'CFLAGS=-g''

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: C
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t


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