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bug#13693: M-x grep should do some basic parameter checking
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From: |
Juri Linkov |
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Subject: |
bug#13693: M-x grep should do some basic parameter checking |
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Date: |
Wed, 13 Feb 2013 10:46:18 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (x86_64-pc-linux-gnu) |
> $ emacs
> (grep "grep -nH -e love")
> Will always fail. And the user will think "well, I can't find the love
> letter she sent me, and thus can't find her address, so I will just give
> up," when all along he just forgot to give the filename.
>
> Whereas normally
> $ grep love
> would hang, waiting for input, so he would know that the relationship
> still had a chance, and it was just emacs that was the reason the two
> would have lost touch...
If you tend to forget the pattern or file argument there is a reliable grep
known as `M-x rgrep' that asks you what and where to search.