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 <assafgordon@gmail.com> 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