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General fixes:
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=============
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- mask propagation (when ligation, "or" the masks).
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- Warn at compile time (and runtime with HB_DEBUG?) if no Unicode / font
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funcs found / set.
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- Fix TT 'kern' on/off and GPOS interaction (move kerning before GPOS).
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- Do proper rounding when scaling from font space? May be a non-issue.
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- Misc features:
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* init/medi/fina/isol for non-cursive scripts
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* vkna,hkna etc for kana, etc
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- Add Pango backend?
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- Add ICUlayout backend?
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- Add ICUlayout API?
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API issues to fix before 1.0:
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============================
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- Add default font_funcs / Unicode funcs API and to utils.
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- Add init_func to font_funcs. Adjust ft.
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- Add pkg-config files for glue codes (harfbuzz-glib, etc)
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- Figure out how many .so objects, how to link, etc
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- 'const' for getter APIs? (use mutable internally)
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- blob_from_file?
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API additions
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=============
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- Language to/from script.
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- Buffer (de)serialize API ala hb-shape?
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- Move feature parsing from util into the library
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- Add hb-cairo glue
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- Add sanitize API (and a cached version, that saves result on blob user-data)
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- Add glib GBoxedType stuff and introspection
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- Add Uniscribe face / font get API
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- BCP 47 language handling / API (language_matches?)
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- Add hb_face_get_glyph_count()?
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- Add hb_font_create_linear()?
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- Add hb_shape_plan()/hb_shape_planned()
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- Add query API for aalt-like features?
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- SFNT api? get_num_faces? get_table_tags? (there's something in stash)
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- Add segmentation API
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- Add hb-fribidi glue?
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hb-view / hb-shape enhancements:
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===============================
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- --output-format should list available formats.
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- Add --width, --height, --auto-size, --align, etc?
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- Add XML and JSON formats to hb-shape
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- --features="init=medi=isol=fina=0"
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Tests to write:
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==============
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- ot-layout enumeration API (needs font)
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- Finish test-shape.c, grep for TODO
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- Finish test-unicode.c, grep for TODO
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- GObject, FreeType, etc
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- hb_set_t
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- hb_cache_t and relatives
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