Re: [PATCH v3] Add an explicit GIT_DIR to the list of excludes

> On Sat, May 24, 2014 at 12:33 AM, Pasha Bolokhov
> <pasha.bolokhov@gmail.com> wrote:
>> When an explicit '--git-dir' option points to a directory inside
>> the work tree, git treats it as if it were any other directory.
>> In particular, 'git status' lists it as untracked, while 'git add -A'
>> stages the metadata directory entirely
>>
>> Add GIT_DIR to the list of excludes in setup_standard_excludes(),
>> while checking that GIT_DIR is not just '.git', in which case it
>> would be ignored by default, and that GIT_DIR is inside GIT_WORK_TREE
>>
>> Although an analogous comparison of any given path against '.git'
>> is done in treat_path(), this does not seem to be the right place
>> to compare against GIT_DIR. Instead, the excludes provide an
>> effective mechanism of ignoring a file/directory, and adding GIT_DIR
>> as an exclude is equivalent of putting it into '.gitignore'. Function
>> setup_standard_excludes() was chosen because that is the place where
>> the excludes are initialized by the commands that are concerned about
>> excludes
>
> I like this approach. A search of "exclude-standard" in Documentation/
> gives git-grep.txt and git-ls-files.txt. I don't know if we need to
> add something about this extra exclude rule to those .txt. If it's so
> obvious that this should be the expected behavior, then probably not.

>
> The case of "git grep --exclude-standard" is interesting because it's
> intended to work without a repository. First reaction was would
> get_git_dir() return NULL in that case. But it should return ".git" so
> we're good.