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grep-command is only customizable before first run of `grep'?
From: |
William Xu |
Subject: |
grep-command is only customizable before first run of `grep'? |
Date: |
Mon, 20 Apr 2009 22:58:32 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.92 (darwin) |
Looks like customizing grep-command only takes effect before first run
of `grep'. e.g.,
1. emacs -Q
2. M-x grep C-g
Now grep-command is: "grep -nH -e ".
3. (setq grep-command "hey")
4. M-x grep C-g
grep-command will be reset to: "grep -nH -e ". What a surprise!
If I run step3 before step2, then grep-command will be set to "hey"
during that emacs session.
Is this the expected behaviour? If so, maybe should be noted in its docstring?
,----
| grep-command is a variable defined in `grep.el'.
| Its value is "grep -nH -e "
|
| Documentation:
| The default grep command for C-c m g.
| If the grep program used supports an option to always include file names
| in its output (such as the `-H' option to GNU grep), it's a good idea to
| include it when specifying `grep-command'.
|
| The default value of this variable is set up by `grep-compute-defaults';
| call that function before using this variable in your program.
|
| You can customize this variable.
|
| [back]
`----
GNU Emacs 23.0.92.1 (i386-apple-darwin9.6.0, NS apple-appkit-949.43) of
2009-04-05 on zen.local
--
William
http://xwl.appspot.com
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