bug#895: slow processing of process output

[Stefan Monnier]

>> 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?


        Stefan