4 - Warn at compile time (and runtime with HB_DEBUG?) if no Unicode / font
7 - In hb_shape(), assert if direction is INVALID.
9 - Fix TT 'kern' on/off and GPOS interaction (move kerning before GPOS).
11 - Do proper rounding when scaling from font space? May be a non-issue.
14 * init/medi/fina/isol for non-cursive scripts
15 * vkna,hkna etc for kana, etc
17 - Move non-native direction and normalization handling to the generic non-OT
18 layer, such that uniscribe and other backends can use.
20 - Uniscribe backend needs to enforce one direction only, otherwise cluster
21 values can confuse the user.
23 - GSUB ligation should call merge_clusters(). Also other places.
25 - Convert NBSP into space glyph.
31 - Add ICUlayout backend?
35 - Add Old HarfBuzz backend?
37 - Add Old HarfBuzz API?
40 API issues to fix before 1.0:
41 ============================
43 - Add default font_funcs / Unicode funcs API and to utils.
45 - Add init_func to font_funcs. Adjust ft.
47 - Add pkg-config files for glue codes (harfbuzz-glib, etc)
49 - Figure out how many .so objects, how to link, etc
51 - 'const' for getter APIs? (use mutable internally)
59 - Buffer (de)serialize API ala hb-shape?
61 - Move feature parsing from util into the library
65 - Add sanitize API (and a cached version, that saves result on blob user-data)
67 - Add glib GBoxedType stuff and introspection
69 - Add Uniscribe face / font get API
71 - BCP 47 language handling / API (language_matches?)
73 - Add hb_face_get_glyph_count()?
75 - Add hb_font_create_linear()?
77 - Add hb_shape_plan()/hb_shape_planned()
79 - Add query API for aalt-like features?
81 - SFNT api? get_num_faces? get_table_tags? (there's something in stash)
83 - Add segmentation API
85 - Add hb-fribidi glue?
88 hb-view / hb-shape enhancements:
89 ===============================
91 - Add --width, --height, --auto-size, --align, etc?
92 - Add XML and JSON formats to hb-shape
93 - --features="init=medi=isol=fina=0"
99 - ot-layout enumeration API (needs font)
101 - Finish test-shape.c, grep for TODO
103 - Finish test-unicode.c, grep for TODO
105 - GObject, FreeType, etc
109 - hb_cache_t and relatives
115 - Avoid allocating blob objects internally for for_data() faces?
117 - Add caching layer to hb-ft?
119 - Cache feature-less shape plans internally on the face.