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bug#2756: move SCCS later in vc-handled-backends

From: Stefan Monnier
Subject: bug#2756: move SCCS later in vc-handled-backends
Date: Mon, 23 Mar 2009 18:15:00 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.91 (gnu/linux)

>> > 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).

> Would that be acceptable for 23.1?


> If not, let's go for fixing the easier problem: moving SCCS later in the
> list of backends.

What problem?  And in what way is it a fix for it?


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