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| From: | Stefan Monnier |
| Subject: | Re: What's your favourite *under_publicized* editing feature of Emacs? |
| Date: | Thu, 10 Feb 2011 12:24:13 -0500 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
> I perform 'M-x elp-instrument-package grep'
> and 'M-x elp-instrument-package compilation'. Next I perform
> '(revert-buffer)' and 'M-x elp-results' and get:
> grep-mode 1 23.906 23.906
> compilation-error-properties 4742 23.047 0.0048601855
> compilation-internal-error-properties 4742 0.094 1.98...e-005
> compilation-get-file-structure 4742 0.016 3.37...e-006
> compilation-mode 1 0.0 0.0
> compilation-mode-font-lock-keywords 1 0.0 0.0
> compilation-setup 1 0.0 0.0
Duh! I completely forgot about it, but yes, there was a clear
performance bug in compilation-error-properties which made it take time
proportional to the buffer size in cases such as M-x grep.
This performance bug is also largely fixed in Emacs-24's compile.el.
Stefan
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