docs: Clarify a doc comment
Reword the docs for hb_ot_layout_script_select_language and
be a bit more specific about the returned index.
diff --git a/src/hb-ot-layout.cc b/src/hb-ot-layout.cc
index 1e446c6..ed7058b 100644
--- a/src/hb-ot-layout.cc
+++ b/src/hb-ot-layout.cc
@@ -717,10 +717,14 @@
* @language_tags: The array of language tags
* @language_index: (out): The index of the requested language
*
- * Fetches the index of a given language tag in the specified face's GSUB table
- * or GPOS table, underneath the specified script index.
+ * Fetches the index of the first language tag fom @language_tags that is present
+ * in the specified face's GSUB or GPOS table, underneath the specified script
+ * index.
*
- * Return value: %true if the language tag is found, %false otherwise
+ * If none of the given language tags is found, %false is returned and
+ * @language_index is set to the default language index.
+ *
+ * Return value: %true if one of the given language tags is found, %false otherwise
*
* Since: 2.0.0
**/
@@ -1016,7 +1020,7 @@
hb_set_t features_set;
for (; *features; features++)
features_set.add (*features);
-
+
for (unsigned i = 0; i < g.get_feature_count (); i++)
{
hb_tag_t tag = g.get_feature_tag (i);
