Re: Command substitution (backtick) and tab completion

[chengiz]

On Dec 31, 11:57 am, Eric Blake <ebl...@redhat.com> wrote:
> On 12/31/2010 09:49 AM, Chris F.A. Johnson wrote:
>
> > Fri, 31 Dec 2010 11:49:26 -0500 (EST) linux system
> >>> with default installation settings.
>
> >>> In an earlier version of bash (3.2), the following works
> >>> ls `pwd`/<tab> (expands pwd).
>
> >>> In bash 4.1 it does not. Am I missing a setting or something?
> >>> Thank you.
>
> >> Anybody that can at least verify this? Thanks.
>
> >    Yes, it works in 3.2 but not in 4.[012].
>
> Personally, I find bash 3.2 behavior buggy - I _don't_ want `` (or $())
> expanded by the mere act of tab-completion, as the command may have side
> effects that I am unwilling to have happen more than once when I hit the
> final Enter to accept the entire command line.  Yes, that means that
> tab-completion is inherently limited when it cannot determine the
> context of which directory to look in because the left-hand side of a
> path name is hidden by a command substitution, but I'd rather live with
> that safety than have arbitrary commands running during completion.
>
> --
> Eric Blake   ebl...@redhat.com    +1-801-349-2682
> Libvirt virtualization libraryhttp://libvirt.org

This is fair, but it could be a setting a user could change.