GNU bug report logs - #2756
move SCCS later in vc-handled-backends

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From: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
To: Dan Nicolaescu <dann <at> ics.uci.edu>
Cc: 2756 <at> debbugs.gnu.org, bug-gnu-emacs <bug-gnu-emacs <at> gnu.org>
Subject: bug#2756: move SCCS later in vc-handled-backends
Date: Mon, 23 Mar 2009 16:16:49 -0400

> SCCS should be moved after later in the vc-handled-backends list, after
> the modern VCs.
> Opening any file costs a call to vc-sccs-registered
> vc-sccs-search-project-dir (and whatever they call).

No matter where SCCS is in the vc-handled-backends list, those functions
will be run for any file that is not version controlled, which is likely
to be a very common case.

> SCCS is not really popular nowadays,

Same thing for RCS, indeed.

> and that should be reflected on the vc-handled-backends list.

We could remove backends from the list based on the presence/absence of
the corresponding executable(s).


        Stefan

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