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bug#10185: 24.0.50; rgrep breaks when called programmatically


From: Juri Linkov
Subject: bug#10185: 24.0.50; rgrep breaks when called programmatically
Date: Fri, 02 Dec 2011 12:59:16 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (x86_64-pc-linux-gnu)

> Evaluating (rgrep "hello") results in "/bin/bash: hello: command not found"
>
> The docstring for rgrep claims that its first argument is intended to be
> a regexp, but clearly it's attempting to execute it via bash.

`rgrep' assumes that when the `FILES' argument is empty then a grep command
is specified in the `REGEXP' argument.  This should be documented.





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