Re: How can I avoid completion using chkconfig on RHEL10?

Roman Perepelitsa <[email protected]> Wed, 25 Feb 2026 09:11:14 +0100

Newsgroups	gmane.comp.shells.zsh.devel,gmane.comp.shells.zsh.user
Message-ID	<CAN=4vMr=Os76HAGM5DY6FNTMAPm9AHU1JLbbD3P=_mrCK-bK3g@mail.gmail.com>

On Wed, Feb 25, 2026 at 12:04 AM Oliver Kiddle <[email protected]> wrote:
>
> I'm not keen on wrapping every use of an external command in
> completion with checks for the command, partly because of the
> inherent race condition. For software in general, it is usually
> better to just try and handle the errors as they occur than to
> check first: chkconfig --list >/dev/null 2>&1 should fail silently.

I always check for the existence of commands in public zsh code
because command_not_found_handler can be very slow. On Debian, it can
take over a second.

Roman