Function cmd_merge

builtin/merge.c:1363–1887

}

int cmd_merge(int argc,
	      const char **argv,
	      const char *prefix,
	      struct repository *repo UNUSED)
{
	struct object_id result_tree, stash, head_oid;
	struct commit *head_commit;
	struct strbuf buf = STRBUF_INIT;
	int i, ret = 0, head_subsumed;
	int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0;
	struct commit_list *common = NULL;
	const char *best_strategy = NULL, *wt_strategy = NULL;
	struct commit_list *remoteheads = NULL, *p;
	void *branch_to_free;
	int orig_argc = argc;
	int merge_log_config = -1;

	show_usage_with_options_if_asked(argc, argv,
					 builtin_merge_usage, builtin_merge_options);

#ifndef WITH_BREAKING_CHANGES
	warn_on_auto_comment_char = true;
#endif /* !WITH_BREAKING_CHANGES */
	prepare_repo_settings(the_repository);
	the_repository->settings.command_requires_full_index = 0;

	/*
	 * Check if we are _not_ on a detached HEAD, i.e. if there is a
	 * current branch.
	 */
	branch = branch_to_free = refs_resolve_refdup(get_main_ref_store(the_repository),
						      "HEAD", 0, &head_oid,
						      NULL);
	if (branch)
		skip_prefix(branch, "refs/heads/", &branch);

	init_diff_ui_defaults();
	repo_config(the_repository, git_merge_config, &merge_log_config);

	if (!branch || is_null_oid(&head_oid))
		head_commit = NULL;
	else
		head_commit = lookup_commit_or_die(&head_oid, "HEAD");

	if (branch_mergeoptions)
		parse_branch_merge_options(branch_mergeoptions);
	argc = parse_options(argc, argv, prefix, builtin_merge_options,
			builtin_merge_usage, 0);
	if (shortlog_len < 0)
		shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;

	if (verbosity < 0 && show_progress == -1)
		show_progress = 0;

	if (abort_current_merge) {
		int nargc = 2;
		const char *nargv[] = {"reset", "--merge", NULL};
		char stash_oid_hex[GIT_MAX_HEXSZ + 1];