vc-print-log was executed from a dired buffer when this happened.
vc-print-root-log works correctly and prints the Emacs bzr logs.

vc.el has the following code in vc-print-log:

  (let* ((vc-fileset (vc-deduce-fileset t)) ;FIXME: Why t? --Stef
 (backend (car vc-fileset))
 (files (cadr vc-fileset))
;; (working-revision (or working-revision (vc-working-revision (car
files))))
         )
    (vc-print-log-internal backend files working-revision nil limit)))

The t in vc-decude-fileset allows unregistered files per the documentation.
To follow Stefan's questions, why would we want unregistered files to be
included in the fileset for the log command?

I think this should be changed to disallow unregistered files.

Christoph


On Wed, Dec 25, 2013 at 10:54 AM, Christoph <cschol2112@gmail.com> wrote:

> Some more information on this issue:
>
> `vc-print-log` works find in a sub-directory of the tree, e.g. admin.
> It looks like aclocal.m4 is ignored via .bzrignore and it is the first
> file in the root tree (after running configure and such).
>
> I seem to remember we had a similar problem before that was fixed at some
> point.
>
>
> On Wed, Dec 25, 2013 at 10:25 AM, Christoph <cschol2112@gmail.com> wrote:
>
>>
>> Running `vc-print-log` on a directory containing the Emacs trunk gives
>> the following error:
>>
>> bzr: ERROR: Path unknown at end or start of revision range: aclocal.m4
>>
>>
>>
>> In GNU Emacs 24.3.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.4.2)
>>  of 2013-12-14 on marvin
>> Bzr revision: 115528 tzz@lifelogs.com-20131214195519-pi759t6a59vg9b1i
>> Windowing system distributor `The X.Org Foundation', version 11.0.11103000
>> System Description:     Linux Mint 13 Maya
>>
>
>