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bug#405: Emacs 22.2.1 in X behaves improperly when run with low memory l

From: Kwang Ketcham
Subject: bug#405: Emacs 22.2.1 in X behaves improperly when run with low memory limits
Date: Fri, 13 Jun 2008 11:12:09 -0700 (PDT)

When run in an X window session and with low process memory limits, Emacs fails to open and/or syntax highlight some files properly. To reproduce, run:

  bash --noprofile --norc
  ulimit -d 10240
    Open treeset-private.hpp [attached]

If things are still going smoothly, try turning on font-lock-mode. At this point, I get the error 'Invalid regexp: "Regular expression too big"'. If the ulimit is set to 8MB instead of 10MB, Emacs encounters this error on startup while attempting to load the splash screen. I have encountered similar errors while loading or highlighting this file with memory limits up to at least 12MB, if not larger. Sometimes the file will fail to load; sometimes it will load but be improperly highlighted; other times it will load but nothing will be highlighted and the modified flag will be set. Behavior is inconsistent; sometimes, simply reissuing the open file command or toggling font-lock-mode will fix things. If you have further questions about the bug, contact me at address@hidden Thank you.

Kwang Ketcham
Harvey Mudd College
CS Department Staff

Attachment: treeset-private.hpp
Description: Text Data

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