Add helper functions to ensure we have sane tag lists

There should never be empty or duplicate tags on those lists.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/dive.h b/dive.h
index 60693f2a1..ef57e2964 100644
--- a/dive.h
+++ b/dive.h
@@ -197,6 +197,9 @@ struct divetag *taglist_add_tag(struct tag_entry **tag_list, const char *tag);
  */
 int taglist_get_tagstring(struct tag_entry *tag_list, char *buffer, int len);
 
+/* cleans up a list: removes empty tags and duplicates */
+void taglist_cleanup(struct tag_entry **tag_list);
+
 void taglist_init_global();
 void taglist_free(struct tag_entry *tag_list);