Function add_config_scope_arg

config.c:2104–2145

}

static void add_config_scope_arg(struct repository *repo, struct strbuf *buf,
				 struct comment_char_config_item *item)
{
	char *global_config = git_global_config();
	char *system_config = git_system_config();

	if (item->scope == CONFIG_SCOPE_SYSTEM && access(item->path, W_OK)) {
		/*
		 * If the user cannot write to the system config recommend
		 * setting the global config instead.
		 */
		strbuf_addstr(buf, "--global ");
	} else if (fspatheq(item->path, system_config)) {
		strbuf_addstr(buf, "--system ");
	} else if (fspatheq(item->path, global_config)) {
		strbuf_addstr(buf, "--global ");
	} else if (fspatheq(item->path,
			    mkpath("%s/config",
				   repo_get_git_dir(repo)))) {
		; /* --local is the default */
	} else if (fspatheq(item->path,
			    mkpath("%s/config.worktree",
				   repo_get_common_dir(repo)))) {
		strbuf_addstr(buf, "--worktree ");
	} else {
		const char *path = item->path;
		const char *home = getenv("HOME");

		strbuf_addstr(buf, "--file ");
		if (home && !fspathncmp(path, home, strlen(home))) {
			path += strlen(home);
			if (!fspathncmp(path, "/", 1))
				path++;
			strbuf_addstr(buf, "~/");
		}
		sq_quote_buf_pretty(buf, path);
		strbuf_addch(buf, ' ');
	}

	free(global_config);
	free(system_config);
}

static bool can_unset_comment_char_config(struct comment_char_config *config)
{