sequencer: run post-commit hook

Prior to commit 356ee46 ("sequencer: try to commit without forking
'git commit'", 2017-11-24) the sequencer would always run the
post-commit hook after each pick or revert as it forked `git commit` to
create the commit. The conversion to committing without forking `git
commit` omitted to call the post-commit hook after creating the commit.

Signed-off-by: Phillip Wood <[email protected]>

Author: phillipwood

builtin/commit.c

@@ -1653,7 +1653,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 
 	repo_rerere(the_repository, 0);
 	run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
-	run_commit_hook(use_editor, get_index_file(), "post-commit", NULL);
+	run_post_commit_hook(use_editor, get_index_file());
 	if (amend && !no_post_rewrite) {
 		commit_post_rewrite(the_repository, current_head, &oid);
 	}

sequencer.c

@@ -1173,6 +1173,10 @@ static int run_prepare_commit_msg_hook(struct repository *r,
 	return ret;
 }
 
+void run_post_commit_hook(int editor_is_used, const char *index_file) {
+	run_commit_hook(editor_is_used, index_file, "post-commit", NULL);
+}
+
 static const char implicit_ident_advice_noconfig[] =
 N_("Your name and email address were configured automatically based\n"
 "on your username and hostname. Please check that they are accurate.\n"
@@ -1427,6 +1431,7 @@ static int try_to_commit(struct repository *r,
 		goto out;
 	}
 
+	run_post_commit_hook(0, r->index_file);
 	if (flags & AMEND_MSG)
 		commit_post_rewrite(r, current_head, oid);
 

sequencer.h

@@ -203,4 +203,5 @@ int sequencer_get_last_command(struct repository* r,
 			       enum replay_action *action);
 LAST_ARG_MUST_BE_NULL
 int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...);
+void run_post_commit_hook(int editor_is_used, const char *index_file);
 #endif /* SEQUENCER_H */

t/t3404-rebase-interactive.sh

@@ -1467,4 +1467,21 @@ test_expect_success 'valid author header when author contains single quote' '
 	test_cmp expected actual
 '
 
+test_expect_success 'post-commit hook is called' '
+	test_when_finished "rm -f .git/hooks/post-commit commits" &&
+	mkdir -p .git/hooks &&
+	write_script .git/hooks/post-commit <<-\EOS &&
+	git rev-parse HEAD >>commits
+	EOS
+	set_fake_editor &&
+	FAKE_LINES="edit 4 1 reword 2 fixup 3" git rebase -i A E &&
+	echo x>file3 &&
+	git add file3 &&
+	FAKE_COMMIT_MESSAGE=edited git rebase --continue &&
+	# rev-list does not support -g --reverse
+	git rev-list --no-walk=unsorted HEAD@{5} HEAD@{4} HEAD@{3} HEAD@{2} \
+		HEAD@{1} HEAD >expected &&
+	test_cmp expected commits
+'
+
 test_done