bug#23436: [PATCH] Attemp to use the true name of a file to determine responsible vc if the genuine name does not work.

[Hong Xu]

On 10/19/2016 04:58 PM, Dmitry Gutov wrote:
> On 20.10.2016 02:49, Hong Xu wrote:
>> On 10/19/2016 04:37 PM, Dmitry Gutov wrote:
>>> On 19.10.2016 22:33, Hong Xu wrote:
>>>> +        (dolist (file-path (list file (file-truename file)))
>>>
>>> Why not just use the true name?
>>
>> Because sometimes we track symlinks specifically. The symlink files may
>> link to a file in a different repo, for example a git submodule.
> 
> I'm not sure I understand. Please outline a problem scenario.

mkdir my-repo && cd my-repo
hg init
git clone git://git.savannah.gnu.org/emacs.git
ln -s  emacs/README README_emacs
hg add README_emacs

README_emacs is tracked in the repo "my-repo" but README is tracked in
the emacs repo. If true name is directly used, we would fail to obtain
the correct responsible backend.

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