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Re: compile.el::grep-program - should it use egrep instead of grep?
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From: |
Andreas Schwab |
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Subject: |
Re: compile.el::grep-program - should it use egrep instead of grep? |
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Date: |
Mon, 12 Sep 2005 18:30:56 +0200 |
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User-agent: |
Gnus/5.110003 (No Gnus v0.3) Emacs/22.0.50 (gnu/linux) |
Jari Aalto <address@hidden> writes:
> Andreas Schwab <address@hidden> writes:
>
> | Jari Aalto <address@hidden> writes:
> |
> | > Could you elaborate a little. The syntax of grep is not sufficient to
> | > make daily searches with M-x find-dired or M-x grep-find that happen
> | > frequently during searching system log files or looking into program
> | > and text document files.
> |
> | In GNU grep there is no expressive difference between BREs and EREs, only
> | the syntax differs.
>
> $ grep --version
> grep (GNU grep) 2.5.1
>
> $ echo -e "this\nthat" | grep '(this|that)'
> <nothing>
Which part of "only the syntax differs" did you not understand?
Andreas.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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