bug#618: 23.0.60; Bazaar support: no revision number with lightweight checkouts

[Torsten Bronger <bronger@physik.rwth-aachen.de>]

Hallöchen!

Chong Yidong writes:

> Hi Torsten,
>
>> In Bazaar lightweight checkouts, Emacs doesn't show the revision
>> number in the mode line.
>
> I think this depends on the branch format, whose default has
> changed since this bug was first reported.  For the latest version
> of bzr, Emacs shows the revision number in the mode line for
> lightweight checkouts (at least for me).

If I remember correctly, someone fixed this shortly after my report.
However, we "agreed" on a rather poor solution: Falling back to
calling "bzr revno" for every open file.  I've used this solution
for many months now.  It slows down Emacs' startup time
significantly.  After all, bzr being a Python program, causes a lot
of overhead.

Therefore, on the long run, Emacs should use the file system even
for lightweight checkouts.  (As long as the branch is local of
course.  But this is typical usage lightweight checkouts.)

Tschö,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus
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