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bug#895: slow processing of process output

From: Stefan Monnier
Subject: bug#895: slow processing of process output
Date: Wed, 06 Jul 2011 11:07:13 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)

>> I can reproduce the problem on OSX, and could significantly improve the
>> running time by setting process-connection-type to nil before doing the
>> rgrep. Let rgrep.el consist of:
>> (grep-compute-defaults)
>> (setq process-connection-type nil)
>> (rgrep "emacs" "*.el" "~/emacs/lisp/")
>> (while (process-status "grep")
>> (sit-for 0.1))

> I've now bound `process-connection-type' to nil in `rgrep' for Emacs 24.

What makes it faster?
Could it be that with process-connection-type set to nil grep doesn't emit
the color escape sequences?


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