Re: [PATCH 3/2] ls-files: only recurse on active submodules

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On Thu, Apr 13, 2017 at 12:25 PM, Stefan Beller <sbeller@xxxxxxxxxx> wrote:
> On Thu, Apr 13, 2017 at 12:12 PM, Jacob Keller <jacob.keller@xxxxxxxxx> wrote:
>> On Thu, Apr 13, 2017 at 12:05 PM, Stefan Beller <sbeller@xxxxxxxxxx> wrote:
>>> On Thu, Apr 13, 2017 at 11:57 AM, Brandon Williams <bmwill@xxxxxxxxxx> wrote:
>>>> Add in a check to see if a submodule is active before attempting to
>>>> recurse.  This prevents 'ls-files' from trying to operate on a submodule
>>>> which may not exist in the working directory.
>>>
>>> What would currently happen on recursing into non-active submodules?
>>> Can we have a test for this?
>>>
>>> Thanks,
>>> Stefan
>>
>> We should be able to test for this. Is it possible that we can recurse
>> into a submodule as long as we have the clone in .git/modules/<name>
>> even if we don't have it checked out currently?
>
> Conceptually that should be possible, e.g.
>
>     git ls-files --recurse-submodules <ancient ref>
>
> where the ancient ref contained submodules that are not present any more.
> In that case we would need to do
>
>     struct strbuf sb = STRBUF_INIT;
>     struct child_process = CHILD_PROCESS_INIT;
>     struct submodule *sub = submodule_from_path( \
>         <path as recorded in ancient tree>, <ancient ref>)
>     strbuf_git_path(&sb, "modules/%s", sub->name);
>
>     argv_array_pushl(&cp.args, "git", "ls-files", "--recurse", ...);
>     cp.dir = sb.buf;
>     run_command(&cp);
>
> Stefan

Never mind. git ls-files doesn't support showing files for a specific
ancient history. (I guess you'd use ls-tree for that?). I'm guessing
we want to run in the actual work-tree for ls-files here.

Does "is_submodule_initialized()" going to ensure that we only operate
on a submodule that's currently checked out?

Thanks,
Jake



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