bug#16422: 24.3.50; Broken git log

[Glenn Morris]

Sujith Manoharan wrote:

> This commit breaks git log using VC for directories:
>
> http://bzr.savannah.gnu.org/lh/emacs/trunk/revision/115934

Nor does it fix the original (long-standing) issue that it was made in
connection with (see most recent comments in http://debbugs.gnu.org/8756).

> This happens when invoking vc-print-log on a directory (bound to C-x v l)
> in a dired buffer.
>
> For example,
>
> Before this commit: http://msujith.org/dir/emacs/log-no-follow.png
> After this commit:  http://msujith.org/dir/emacs/log-follow.png
>
> From the man page for git-log, --follow is an option that is valid
> only for single files, so I think this shouldn't be done for directories.