Deprecate obsolete functions

`hb_ot_tags` replaces `hb_ot_tags_from_script` and
`hb_ot_tag_from_language`.

`hb_ot_layout_table_select_script` replaces
`hb_ot_layout_table_choose_script`.

`hb_ot_layout_script_select_language` replaces
`hb_ot_layout_script_find_language`.

docs/harfbuzz-sections.txt

@@ -155,6 +155,10 @@ HB_BUFFER_SERIALIZE_FLAGS_DEFAULT
 HB_SCRIPT_CANADIAN_ABORIGINAL
 hb_font_funcs_set_glyph_func
 hb_font_get_glyph_func_t
+hb_ot_layout_table_choose_script
+hb_ot_layout_table_find_script
+hb_ot_tag_from_language
+hb_ot_tags_from_script
 hb_set_invert
 hb_unicode_eastasian_width_func_t
 hb_unicode_eastasian_width
@@ -498,9 +502,7 @@ hb_ot_layout_lookup_would_substitute
 hb_ot_layout_script_find_language
 hb_ot_layout_script_get_language_tags
 hb_ot_layout_script_select_language
-hb_ot_layout_table_choose_script
 hb_ot_layout_table_find_feature_variations
-hb_ot_layout_table_find_script
 hb_ot_layout_table_get_feature_tags
 hb_ot_layout_table_get_script_tags
 hb_ot_layout_table_get_lookup_count
@@ -556,11 +558,9 @@ HB_OT_MAX_TAGS_PER_LANGUAGE
 HB_OT_MAX_TAGS_PER_SCRIPT
 HB_OT_TAG_DEFAULT_LANGUAGE
 HB_OT_TAG_DEFAULT_SCRIPT
-hb_ot_tag_from_language
 hb_ot_tag_to_language
 hb_ot_tag_to_script
 hb_ot_tags
-hb_ot_tags_from_script
 </SECTION>
 
 <SECTION>

src/hb-deprecated.h

@@ -211,6 +211,29 @@ hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
 					 hb_direction_t direction,
 					 hb_position_t *x, hb_position_t *y);
 
+/* Like hb_ot_layout_table_find_script, but takes zero-terminated array of scripts to test */
+HB_EXTERN HB_DEPRECATED hb_bool_t
+hb_ot_layout_table_choose_script (hb_face_t      *face,
+				  hb_tag_t        table_tag,
+				  const hb_tag_t *script_tags,
+				  unsigned int   *script_index,
+				  hb_tag_t       *chosen_script);
+
+HB_EXTERN HB_DEPRECATED hb_bool_t
+hb_ot_layout_script_find_language (hb_face_t    *face,
+				   hb_tag_t      table_tag,
+				   unsigned int  script_index,
+				   hb_tag_t      language_tag,
+				   unsigned int *language_index);
+
+HB_EXTERN HB_DEPRECATED void
+hb_ot_tags_from_script (hb_script_t  script,
+			hb_tag_t    *script_tag_1,
+			hb_tag_t    *script_tag_2);
+
+HB_EXTERN HB_DEPRECATED hb_tag_t
+hb_ot_tag_from_language (hb_language_t language);
+
 
 #endif
 

src/hb-ot-layout.h

@@ -111,14 +111,6 @@ hb_ot_layout_table_find_script (hb_face_t    *face,
 				hb_tag_t      script_tag,
 				unsigned int *script_index);
 
-/* Like find_script, but takes zero-terminated array of scripts to test */
-HB_EXTERN hb_bool_t
-hb_ot_layout_table_choose_script (hb_face_t      *face,
-				  hb_tag_t        table_tag,
-				  const hb_tag_t *script_tags,
-				  unsigned int   *script_index,
-				  hb_tag_t       *chosen_script);
-
 HB_EXTERN hb_bool_t
 hb_ot_layout_table_select_script (hb_face_t      *face,
 				  hb_tag_t        table_tag,
@@ -142,13 +134,6 @@ hb_ot_layout_script_get_language_tags (hb_face_t    *face,
 				       unsigned int *language_count /* IN/OUT */,
 				       hb_tag_t     *language_tags /* OUT */);
 
-HB_EXTERN hb_bool_t
-hb_ot_layout_script_find_language (hb_face_t    *face,
-				   hb_tag_t      table_tag,
-				   unsigned int  script_index,
-				   hb_tag_t      language_tag,
-				   unsigned int *language_index);
-
 HB_EXTERN hb_bool_t
 hb_ot_layout_script_select_language (hb_face_t    *face,
 				     hb_tag_t      table_tag,

src/hb-ot-tag.h

@@ -50,17 +50,9 @@ hb_ot_tags (hb_script_t   script,
 	    unsigned int *language_count /* IN/OUT */,
 	    hb_tag_t     *language_tags /* OUT */);
 
-HB_EXTERN void
-hb_ot_tags_from_script (hb_script_t  script,
-			hb_tag_t    *script_tag_1,
-			hb_tag_t    *script_tag_2);
-
 HB_EXTERN hb_script_t
 hb_ot_tag_to_script (hb_tag_t tag);
 
-HB_EXTERN hb_tag_t
-hb_ot_tag_from_language (hb_language_t language);
-
 HB_EXTERN hb_language_t
 hb_ot_tag_to_language (hb_tag_t tag);