add alpm_list_append

alpm_list_add always returns the provided list making it impossible for
callers to check whether or not the operation actually succeeded without
manually comparing the list length before and after.  alpm_list_append
instead returns a pointer to the newly created list item so that success
can be checked.

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libalpm/alpm_list.h b/lib/libalpm/alpm_list.h
index 801f4a07..5af84e1a 100644
--- a/lib/libalpm/alpm_list.h
+++ b/lib/libalpm/alpm_list.h
@@ -57,6 +57,7 @@ void alpm_list_free_inner(alpm_list_t *list, alpm_list_fn_free fn);
 
 /* item mutators */
 alpm_list_t *alpm_list_add(alpm_list_t *list, void *data);
+alpm_list_t *alpm_list_append(alpm_list_t **list, void *data);
 alpm_list_t *alpm_list_add_sorted(alpm_list_t *list, void *data, alpm_list_fn_cmp fn);
 alpm_list_t *alpm_list_join(alpm_list_t *first, alpm_list_t *second);
 alpm_list_t *alpm_list_mmerge(alpm_list_t *left, alpm_list_t *right, alpm_list_fn_cmp fn);