Package: sml-mode
Version: 4.0-5
Severity: important
With a recent emacs-snapshot-gtk, font highlighting in an inferior SML
mode seems to take time proportional to the amount of text in the *sml*
buffer.
To reproduce:
1. make sure that font highlighting is on (eg, global-font-lock-mode)
2. visit an sml file
3. launch an inferior SML mode (eg, M-x switch-to-sml)
4. repeatedly type "open SMLofNJ;" or similar
as the buffer fills up with output, font highlighting will eat
more and more CPU time. for example after a while, it takes
seconds on my computer before the initial "o" of "open SMLofNJ;"
will appear, and there are similar pauses between all subsequent
letters.
5. switch off font-highlighting in the *sml* buffer
(M-x font-lock-mode)
6. now typing anything is fast again.
I don't have this problem in other buffers with highlighting turned on.
Also neither M-x shell, nor a plain "M-x comint-run RET sml" seems to
exhibit this problem. So it's something in sml-proc.el interacting
with some recent changes to emacs-snapshot. (I can't pinpoint the exact
version of emacs-snapshot when this started, but it was some time in the
last month). This problem does not appear with a current emacs21.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing'), (600, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-k7
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Versions of packages sml-mode depends on:
ii emacs-snapshot-gtk [emacsen 1:20060315-1 The GNU Emacs editor (with
GTK+ 2.
ii emacs21 [emacsen] 21.4a-1 The GNU Emacs editor
sml-mode recommends no packages.
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