[Bug-vc-dwim] bug#21120: bug#21120: vc-chlog fails if git submodules are dirty

[Assaf Gordon]

Hello,

On Mon, Jul 27, 2015 at 10:22:08PM -0700, Jim Meyering wrote:
> On Wed, Jul 22, 2015 at 4:54 PM, Assaf Gordon <address@hidden> wrote:
> > it seems that if a project using git has a submodule that is dirty, vc-chlog
> > will fail to print the information about all the files.
<...>

> > Another possible thing is to make 'vc-dwim' abort if there are dirty
> > submodules, on the assumption that 'vc-dwim' is meant to prevent problematic
> > commits, and a dirty submodule is a hint of a potential problem.

> Issuing a warning does have a little more appeal to me, but I would be happy
> with a complete patch implementing either behavior (i.e., updating NEWS
> and adding a test).

For starters, attached is the simpler approach of silently ignoring 
dirty git submodules with `vc-dwim --diff`.

Comments welcomed,
 -assaf

vc-dwim-ignore-git-submodules.patch
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