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Re: Problem with grep in Emacs 23.2

From: Shenli Zhu
Subject: Re: Problem with grep in Emacs 23.2
Date: Tue, 7 Sep 2010 09:50:37 +0800

Lennart, thank you,

I set grep-use-null-device to nil, but the problem still happen.

Maybe I shall trace the code to find how to avoid grep-probe. There is no switch to turn off (grep-compute-defaults) in grep, because different versions of grep. But I think most of people work on Linux and Gnu grep. So why not have a switch tell it do not compute defaults?

On Tue, Sep 7, 2010 at 9:24 AM, Lennart Borgman <> wrote:
Use customize to set the needed values, for example:

 M-x customize RET grep-use-null-device RET

On Tue, Sep 7, 2010 at 3:05 AM, Shenli Zhu <> wrote:
> Hi, Lennart, how to skip grep-probe/grep-compute-defaults (add hook or
> change variable)?
> Thanks
> On Tue, Sep 7, 2010 at 8:24 AM, Lennart Borgman <>
> wrote:
>> On Tue, Sep 7, 2010 at 2:22 AM, Shenli Zhu <> wrote:
>> > Hi Peter,
>> >
>> > Do you mean the grep-command I set should be runnable in shell? I just
>> > use
>> > grep-command to store the grep template, so it cannot be run in shell.
>> >
>> > Why we need probe-grep? To test whether grep exists and whether its
>> > function
>> > works correctly? Can I skip it?
>> probe-grep tries to find out what grep program you actually use and
>> what it can do. So, yes, you can skip it if you know what the program
>> can do.

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