Message-ID: <4BE41E73.3010007@redhat.com>
Date: Fri, 07 May 2010 08:06:43 -0600
From: Eric Blake <eblake AT redhat DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: bash -i with installed and enabled bash_completion starting too slow
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On 05/07/2010 02:08 AM, Oleksandr Gavenko wrote:
> from sh I run:
>=20
> sh-3.2$ time bash -i -c echo
>=20
> real    0m0.218s
> user    0m0.062s
> sys     0m0.016s
>=20
> sh-3.2$ echo ". /etc/bash_completion" >~/.bashrc   # enable completion
>=20
> sh-3.2$ time bash -i -c echo
>=20
> real    0m2.657s

Yes, this is a known issue with the current bash-completion - it sources
a HUGE file, which conditionally defines lots of shell functions after
probing which commands are present, and if your $PATH includes anything
with high-latency probing (like a networked drive), it adds up fast.
Upstream bash-completion is working on a plugin-style completion, where
the initial framework loads quickly without any program probing, and
then hitting TAB per program loads just that program's completion
routines, but it is still a work in progress.  So it will get better
over time, and get there faster if you help contribute upstream.

--=20
Eric Blake   eblake AT redhat DOT com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org
volunteer cygwin bash-completion maintainer


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