Function list_paths

builtin/commit.c:255–290

* Take a union of paths in the index and the named tree (typically, "HEAD"), * and return the paths that match the given pattern in list. */

 * and return the paths that match the given pattern in list.
 */
static int list_paths(struct string_list *list, const char *with_tree,
		      const struct pathspec *pattern)
{
	int i, ret;
	char *m;

	if (!pattern->nr)
		return 0;

	m = xcalloc(1, pattern->nr);

	if (with_tree) {
		char *max_prefix = common_prefix(pattern);
		overlay_tree_on_index(the_repository->index, with_tree, max_prefix);
		free(max_prefix);
	}

	/* TODO: audit for interaction with sparse-index. */
	ensure_full_index(the_repository->index);
	for (i = 0; i < the_repository->index->cache_nr; i++) {
		const struct cache_entry *ce = the_repository->index->cache[i];
		struct string_list_item *item;

		if (ce->ce_flags & CE_UPDATE)
			continue;
		if (!ce_path_match(the_repository->index, ce, pattern, m))
			continue;
		item = string_list_insert(list, ce->name);
		if (ce_skip_worktree(ce))
			item->util = item; /* better a valid pointer than a fake one */
	}

	ret = report_path_error(m, pattern);
	free(m);
	return ret;
}

static void add_remove_files(struct string_list *list)
{