diff-lib: honor override_submodule_config flag bit
When `diff.ignoreSubmodules = all` is set and submodule commits are
manually staged (e.g. via `git-update-index`), `git-commit` should
record the commit with updated submodules.
`index_differs_from` is called from `prepare_to_commit` with flags set to
`override_submodule_config = 1`. `index_differs_from` then merges the
default diff flags and passed flags.
When `diff.ignoreSubmodules` is set to "all", `flags` ends up having
both `override_submodule_config` and `ignore_submodules` set to 1. This
results in `git-commit` ignoring staged commits.
This patch restores original `flags.ignore_submodule` if
`flags.override_submodule_config` is set.
Signed-off-by: Josip Sokcevic <sokcevic@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/diff-lib.c b/diff-lib.c
index 60e979d..1918517 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -669,8 +669,15 @@ int index_differs_from(struct repository *r,
setup_revisions(0, NULL, &rev, &opt);
rev.diffopt.flags.quick = 1;
rev.diffopt.flags.exit_with_status = 1;
- if (flags)
+ if (flags) {
diff_flags_or(&rev.diffopt.flags, flags);
+ /*
+ * Now that flags are merged, honor override_submodule_config
+ * and ignore_submodules from passed flags.
+ */
+ if (flags->override_submodule_config)
+ rev.diffopt.flags.ignore_submodules = flags->ignore_submodules;
+ }
rev.diffopt.ita_invisible_in_index = ita_invisible_in_index;
run_diff_index(&rev, 1);
has_changes = rev.diffopt.flags.has_changes;
