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[PATCH] builtin/grep.c: remote superflous submodule code

In f9ee2fcdfa (grep: recurse in-process using 'struct repository',
2017-08-02), we introduced a call to repo_read_gitmodules in builtin/grep
to simplify the submodule handling.

After ff6f1f564c4 (submodule-config: lazy-load a repository's .gitmodules
file, 2017-08-03) this is no longer necessary, but that commit did not
cleanup the whole tree, but just show cased the new way how to deal with
submodules in ls-files.

Cleanup the only remaining caller to repo_read_gitmodules outside of

Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>

Antonio Ospite writes:
> BTW, with Stefan Beller we also identified some unneeded code which
> could have been removed to alleviate the issue, but that would not have
> solved it completely; so, I am not removing the unnecessary call to
> repo_read_gitmodules() builtin/grep.c in this series, possibly this can
> become a stand-alone change.

Here is the stand-alone change.

The patch [1] contains the lines as deleted below in the context lines
but they would not conflict as there is one empty line between the changes
in this patch in [1].

[1] https://public-inbox.org/git/20181005130601.15879-10-ao2@xxxxxx/

 builtin/grep.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index 601f801158..a6272b9c2f 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -427,8 +427,6 @@ static int grep_submodule(struct grep_opt *opt, struct repository *superproject,
 	if (repo_submodule_init(&submodule, superproject, path))
 		return 0;
-	repo_read_gitmodules(&submodule);
 	 * NEEDSWORK: This adds the submodule's object directory to the list of
 	 * alternates for the single in-memory object store.  This has some bad