+Overview of changes leading to 0.9.35
+Saturday, August 13, 2014
+=====================================
+
+- Fix major shape-plan caching bug when more than one shaper were
+ provided to hb_shape_full() (as exercised by XeTeX).
+ http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1246370.html
+- Fix Arabic fallback shaping regression. This was broken in 0.9.32.
+- Major hb-coretext fixes. That backend is complete now, including
+ respecing buffer direction and language, down to vertical writing.
+- Build fixes for Windows CE. Should build fine now.
+- Misc fixes:
+ Use atexit() only if it's safe to call from shared library
+ https://bugs.freedesktop.org/show_bug.cgi?id=82246
+ Mandaic had errors in its Unicode Joining_Type
+ https://bugs.freedesktop.org/show_bug.cgi?id=82306
+- API changes:
+
+ * hb_buffer_clear_contents() does not reset buffer flags now.
+
+ After 763e5466c0a03a7c27020e1e2598e488612529a7, one doesn't
+ need to set flags for different pieces of text. The flags now
+ are something the client sets up once, depending on how it
+ actually uses the buffer. As such, don't clear it in
+ clear_contents().
+
+ I don't expect any changes to be needed to any existing client.
+
+
+Overview of changes leading to 0.9.34
+Saturday, August 2, 2014
+=====================================
+
+- hb_feature_from_string() now accepts CSS font-feature-settings format.
+- As a result, hb-shape / hb-view --features also accept CSS-style strings.
+ Eg, "'liga' off" is accepted now.
+- Add old-spec Myanmar shaper:
+ https://bugs.freedesktop.org/show_bug.cgi?id=81775
+- Don't apply 'calt' in Hangul shaper.
+- Fix mark advance zeroing for Hebrew shaper:
+ https://bugs.freedesktop.org/show_bug.cgi?id=76767
+- Implement Windows-1256 custom Arabic shaping. Only built on Windows,
+ and requires help from get_glyph(). Used by Firefox.
+ https://bugzilla.mozilla.org/show_bug.cgi?id=1045139
+- Disable 'liga' in vertical text.
+- Build fixes.
+- API changes:
+
+ * Make HB_BUFFER_FLAG_BOT/EOT easier to use.
+
+ Previously, we expected users to provide BOT/EOT flags when the
+ text *segment* was at paragraph boundaries. This meant that for
+ clients that provide full paragraph to HarfBuzz (eg. Pango), they
+ had code like this:
+
+ hb_buffer_set_flags (hb_buffer,
+ (item_offset == 0 ? HB_BUFFER_FLAG_BOT : 0) |
+ (item_offset + item_length == paragraph_length ?
+ HB_BUFFER_FLAG_EOT : 0));
+
+ hb_buffer_add_utf8 (hb_buffer,
+ paragraph_text, paragraph_length,
+ item_offset, item_length);
+
+ After this change such clients can simply say:
+
+ hb_buffer_set_flags (hb_buffer,
+ HB_BUFFER_FLAG_BOT | HB_BUFFER_FLAG_EOT);
+
+ hb_buffer_add_utf8 (hb_buffer,
+ paragraph_text, paragraph_length,
+ item_offset, item_length);
+
+ Ie, HarfBuzz itself checks whether the segment is at the beginning/end
+ of the paragraph. Clients that only pass item-at-a-time to HarfBuzz
+ continue not setting any flags whatsoever.
+
+ Another way to put it is: if there's pre-context text in the buffer,
+ HarfBuzz ignores the BOT flag. If there's post-context, it ignores
+ EOT flag.
+
+
+Overview of changes leading to 0.9.33
+Tuesday, July 22, 2014
+=====================================
+
+- Turn off ARabic 'cswh' feature that was accidentally turned on.
+- Add HB_TAG_MAX_SIGNED.
+- Make hb_face_make_immutable() really make face immutable!
+- Windows build fixes.
+
+
+Overview of changes leading to 0.9.32
+Thursday, July 17, 2014
+=====================================
+
+- Apply Arabic shaping features in spec order exactly.
+- Another fix for Mongolian free variation selectors.
+- For non-Arabic scripts in Arabic shaper apply 'rlig' and 'calt'
+ together.
+- Minor adjustment to U+FFFD logic.
+- Fix hb-coretext build.
+
+
+Overview of changes leading to 0.9.31
+Wednesday, July 16, 2014
+=====================================
+
+- Only accept valid UTF-8/16/32; we missed many cases before.
+- Better shaping of invalid UTF-8/16/32. Falls back to
+ U+FFFD REPLACEMENT CHARACTER now.
+- With all changes in this release, the buffer will contain fully
+ valid Unicode after hb_buffer_add_utf8/16/32 no matter how
+ broken the input is. This can be overriden though. See below.
+- Fix Mongolian Variation Selectors for fonts without GDEF.
+- Fix minor invalid buffer access.
+- Accept zh-Hant and zh-Hans language tags. hb_ot_tag_to_language()
+ now uses these instead of private tags.
+- Build fixes.
+- New API:
+ * hb_buffer_add_codepoints(). This does what hb_buffer_add_utf32()
+ used to do, ie. no validity check on the input at all. add_utf32
+ now replaces invalid Unicode codepoints with the replacement
+ character (see below).
+ * hb_buffer_set_replacement_codepoint()
+ * hb_buffer_get_replacement_codepoint()
+ Previously, in hb_buffer_add_utf8 and hb_buffer_add_utf16, when
+ we detected broken input, we replaced that with (hb_codepoint_t)-1.
+ This has changed to use U+FFFD now, but can be changed using these
+ new API.
+
+
+Overview of changes leading to 0.9.30
+Wednesday, July 9, 2014
+=====================================
+
+- Update to Unicode 7.0.0:
+ * New scripts Manichaean and Psalter Pahlavi are shaped using
+ Arabic shaper.
+ * All the other new scripts to through the generic shaper for
+ now.
+- Minor Indic improvements.
+- Fix graphite2 backend cluster mapping [crasher!]
+- API changes:
+ * New HB_SCRIPT_* values for Unicode 7.0 scripts.
+ * New function hb_ot_layout_language_get_required_feature().
+- Build fixes.
+
+
+Overview of changes leading to 0.9.29
+Thursday, May 29, 2014
+=====================================
+
+- Implement cmap in hb-ot-font.h. No variation-selectors yet.
+- Myanmar: Allow MedialYa+Asat.
+- Various Indic fixes:
+ * Support most characters in Extended Devanagary and Vedic
+ Unicode blocks.
+ * Allow digits and a some punctuation as consonant placeholders.
+- Build fixes.
+
+
+Overview of changes leading to 0.9.28
+Monday, April 28, 2014
+=====================================
+
+- Unbreak old-spec Indic shaping. (bug 76705)
+- Fix shaping of U+17DD and U+0FC6.
+- Add HB_NO_MERGE_CLUSTERS build option. NOT to be enabled by default
+ for shipping libraries. It's an option for further experimentation
+ right now. When we are sure how to do it properly, we will add
+ public run-time API for the functionality.
+- Build fixes.
+
+
+Overview of changes leading to 0.9.27
+Tuesday, March 18, 2014
+=====================================
+
+- Don't use "register" storage class specifier
+- Wrap definition of free_langs() with HAVE_ATEXIT
+- Add coretext_aat shaper and hb_coretext_face_create() constructor
+- If HAVE_ICU_BUILTIN is defined, use hb-icu Unicode callbacks
+- Add Myanmar test case from OpenType Myanmar spec
+- Only do fallback Hebrew composition if no GPOS 'mark' available
+- Allow bootstrapping without gtk-doc
+- Use AM_MISSING_PROG for ragel and git
+- Typo in ucdn's Makefile.am
+- Improve MemoryBarrier() implementation
+
+
+Overview of changes leading to 0.9.26
+Thursday, January 30, 2014
+=====================================
+
+- Misc fixes.
+- Fix application of 'rtlm' feature.
+- Automatically apply frac/numr/dnom around U+2044 FRACTION SLASH.
+- New header: hb-ot-shape.h
+- Uniscribe: fix scratch-buffer accounting.
+- Reorder Tai Tham SAKOT to after tone-marks.
+- Add Hangul shaper.
+- New files:
+ hb-ot-shape-complex-hangul.cc
+ hb-ot-shape-complex-hebrew.cc
+ hb-ot-shape-complex-tibetan.cc
+- Disable 'cswh' feature in Arabic shaper.
+- Coretext: better handle surrogate pairs.
+- Add HB_TAG_MAX and _HB_SCRIPT_MAX_VALUE.
+
+
+Overview of changes leading to 0.9.25
+Wednesday, December 4, 2013
+=====================================
+
+- Myanmar shaper improvements.
+- Avoid font fallback in CoreText backend.
+- Additional OpenType language tag mappiongs.
+- More aggressive shape-plan caching.
+- Build with / require automake 1.13.
+- Build with libtool 2.4.2.418 alpha to support ppc64le.
+
+
+Overview of changes leading to 0.9.24
+Tuesday, November 13, 2013
+=====================================
+
+- Misc compiler warning fixes with clang.
+- No functional changes.
+
+
+Overview of changes leading to 0.9.23
+Monday, October 28, 2013
+=====================================
+
+- "Udupi HarfBuzz Hackfest", Paris, October 14..18 2013.
+- Fix (Chain)Context recursion with non-monotone lookup positions.
+- Misc Indic bug fixes.
+- New Javanese / Buginese shaping, similar to Windows 8.1.
+
+
+Overview of changes leading to 0.9.22
+Thursday, October 3, 2013
+=====================================
+
+- Fix use-after-end-of-scope in hb_language_from_string().
+- Fix hiding of default_ignorables if font doesn't have space glyph.
+- Protect against out-of-range lookup indices.
+
+- API Changes:
+
+ * Added hb_ot_layout_table_get_lookup_count()
+
+
+Overview of changes leading to 0.9.21
+Monday, September 16, 2013
+=====================================
+
+- Rename gobject-introspection library name from harfbuzz to HarfBuzz.
+- Remove (long disabled) hb-old and hb-icu-le test shapers.
+- Misc gtk-doc and gobject-introspection annotations.
+- Misc fixes.
+- API changes:
+
+ * Add HB_SET_VALUE_INVALID
+
+Overview of changes leading to 0.9.20
+Thursday, August 29, 2013
+=====================================
+
+General:
+- Misc substitute_closure() fixes.
+- Build fixes.
+
+Documentation:
+- gtk-doc boilerplate integrated. Docs are built now, but
+ contain no contents. By next release hopefully we have
+ some content in. Enable using --enable-gtk-doc.
+
+GObject and Introspection:
+- Added harfbuzz-gobject library (hb-gobject.h) that has type
+ bindings for all HarfBuzz objects and enums. Enable using
+ --with-gobject.
+- Added gobject-introspection boilerplate. Nothing useful
+ right now. Work in progress. Gets enabled automatically if
+ --with-gobject is used. Override with --disable-introspection.
+
+OpenType shaper:
+- Apply 'mark' in Myanmar shaper.
+- Don't apply 'dlig' by default.
+
+Uniscribe shaper:
+- Support user features.
+- Fix loading of fonts that are also installed on the system.
+- Fix shaping of Arabic Presentation Forms.
+- Fix build with wide chars.
+
+CoreText shaper:
+- Support user features.
+
+Source changes:
+- hb_face_t code moved to hb-face.h / hb-face.cc.
+- Added hb-deprecated.h.
+
+API changes:
+- Added HB_DISABLE_DEPRECATED.
+- Deprecated HB_SCRIPT_CANADIAN_ABORIGINAL; replaced by
+ HB_SCRIPT_CANADIAN_SYLLABICS.
+- Deprecated HB_BUFFER_FLAGS_DEFAULT; replaced by
+ HB_BUFFER_FLAG_DEFAULT.
+- Deprecated HB_BUFFER_SERIALIZE_FLAGS_DEFAULT; replaced by
+ HB_BUFFER_SERIALIZE_FLAG_DEFAULT.
+
+
+Overview of changes leading to 0.9.19
+Tuesday, July 16, 2013
+=====================================
+
+- Build fixes.
+- Better handling of multiple variation selectors in a row.
+- Pass on variation selector to GSUB if not consumed by cmap.
+- Fix undefined memory access.
+- Add Javanese config to Indic shaper.
+- Misc bug fixes.
+
+Overview of changes leading to 0.9.18
+Tuesday, May 28, 2013
+=====================================
+
+New build system:
+
+- All unneeded code is all disabled by default,
+
+- Uniscribe and CoreText shapers can be enabled with their --with options,
+
+- icu_le and old shapers cannot be enabled for now,
+
+- glib, freetype, and cairo will be detected automatically.
+ They can be force on/off'ed with their --with options,
+
+- icu and graphite2 are default off, can be enabled with their --with
+ options,
+
+Moreover, ICU support is now build into a separate library:
+libharfbuzz-icu.so, and a new harfbuzz-icu.pc is shipped for it.
+Distros can enable ICU now without every application on earth
+getting linked to via libharfbuzz.so.
+
+For distros I recommend that they make sure they are building --with-glib
+--with-freetype --with-cairo, --with-icu, and optionally --with-graphite2;
+And package harfbuzz and harfbuzz-icu separately.
+
+
+Overview of changes leading to 0.9.17
+Monday, May 20, 2013
+=====================================
+
+- Build fixes.
+- Fix bug in hb_set_get_min().
+- Fix regression with Arabic mark positioning / width-zeroing.
+
+Overview of changes leading to 0.9.16
+Friday, April 19, 2013
+=====================================
+
+- Major speedup in OpenType lookup processing. With the Amiri
+ Arabic font, this release is over 3x faster than previous
+ release. All scripts / languages should see this speedup.
+
+- New --num-iterations option for hb-shape / hb-view; useful for
+ profiling.
+
+Overview of changes leading to 0.9.15
+Friday, April 05, 2013
+=====================================
+
+- Build fixes.
+- Fix crasher in graphite2 shaper.
+- Fix Arabic mark width zeroing regression.
+- Don't compose Hangul jamo into Unicode syllables.
+
+
+Overview of changes leading to 0.9.14
+Thursday, March 21, 2013
+=====================================
+
+- Build fixes.
+- Fix time-consuming sanitize with malicious fonts.
+- Implement hb_buffer_deserialize_glyphs() for both json and text.
+- Do not ignore Hangul filler characters.
+- Indic fixes:
+ * Fix Malayalam pre-base reordering interaction with post-forms.
+ * Further adjust ZWJ handling. Should fix known regressions from
+ 0.9.13.
+
+
+Overview of changes leading to 0.9.13
+Thursday, February 25, 2013
+=====================================
+
+- Build fixes.
+- Ngapi HarfBuzz Hackfest in London (February 2013):
+ * Fixed all known Indic bugs,
+ * New Win8-style Myanmar shaper,
+ * New South-East Asian shaper for Tai Tham, Cham, and New Tai Lue,
+ * Smartly ignore Default_Ignorable characters (joiners, etc) wheb
+ matching GSUB/GPOS lookups,
+ * Fix 'Phags-Pa U+A872 shaping,
+ * Fix partial disabling of default-on features,
+ * Allow disabling of TrueType kerning.
+- Fix possible crasher with broken fonts with overlapping tables.
+- Removed generated files from git again. So, one needs ragel to
+ bootstrap from the git tree.
+
+API changes:
+- hb_shape() and related APIs now abort if buffer direction is
+ HB_DIRECTION_INVALID. Previously, hb_shape() was calling
+ hb_buffer_guess_segment_properties() on the buffer before
+ shaping. The heuristics in that function are fragile. If the
+ user really wants the old behvaior, they can call that function
+ right before calling hb_shape() to get the old behavior.
+- hb_blob_create_sub_blob() always creates sub-blob with
+ HB_MEMORY_MODE_READONLY. See comments for the reason.
+
+
+Overview of changes leading to 0.9.12
+Thursday, January 18, 2013
+=====================================
+
+- Build fixes for Sun compiler.
+- Minor bug fix.
+
+Overview of changes leading to 0.9.11
+Thursday, January 10, 2013
+=====================================
+
+- Build fixes.
+- Fix GPOS mark attachment with null Anchor offsets.
+- [Indic] Fix old-spec reordering of viramas if sequence ends in one.
+- Fix multi-threaded shaper data creation crash.
+- Add atomic ops for Solaris.
+
+API changes:
+- Rename hb_buffer_clear() to hb_buffer_clear_contents().
+
+
+Overview of changes leading to 0.9.10
+Thursday, January 3, 2013
+=====================================
+
+- [Indic] Fixed rendering of Malayalam dot-reph
+- Updated OT language tags.
+- Updated graphite2 backend.
+- Improved hb_ot_layout_get_size_params() logic.
+- Improve hb-shape/hb-view help output.
+- Fixed hb-set.h implementation to not crash.
+- Fixed various issues with hb_ot_layout_collect_lookups().
+- Various build fixes.
+
+New API:
+
+hb_graphite2_face_get_gr_face()
+hb_graphite2_font_get_gr_font()
+hb_coretext_face_get_cg_font()
+
+Modified API:
+
+hb_ot_layout_get_size_params()
+
+
+Overview of changes leading to 0.9.9
+Wednesday, December 5, 2012
+====================================
+
+- Fix build on Windows.
+- Minor improvements.
+
+
+Overview of changes leading to 0.9.8
+Tuesday, December 4, 2012
+====================================
+
+
+- Actually implement hb_shape_plan_get_shaper ().
+- Make UCDB data tables const.
+- Lots of internal refactoring in OTLayout tables.
+- Flesh out hb_ot_layout_lookup_collect_glyphs().
+
+New API:
+
+hb_ot_layout_collect_lookups()
+hb_ot_layout_get_size_params()
+
+
+Overview of changes leading to 0.9.7
+Sunday, November 21, 2012
+====================================
+
+
+HarfBuzz "All-You-Can-Eat-Sushi" (aka Vancouver) Hackfest and follow-on fixes.
+
+- Fix Arabic contextual joining using pre-context text.
+- Fix Sinhala "split matra" mess.
+- Fix Khmer shaping with broken fonts.
+- Implement Thai "PUA" shaping for old fonts.
+- Do NOT route Kharoshthi script through the Indic shaper.
+- Disable fallback positioning for Indic and Thai shapers.
+- Misc fixes.
+
+
+hb-shape / hb-view changes:
+
+- Add --text-before and --text-after
+- Add --bot / --eot / --preserve-default-ignorables
+- hb-shape --output-format=json
+
+
+New API:
+
+hb_buffer_clear()
+
+hb_buffer_flags_t
+
+HB_BUFFER_FLAGS_DEFAULT
+HB_BUFFER_FLAG_BOT
+HB_BUFFER_FLAG_EOT
+HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES
+
+hb_buffer_set_flags()
+hb_buffer_get_flags()
+
+HB_BUFFER_SERIALIZE_FLAGS
+hb_buffer_serialize_glyphs()
+hb_buffer_deserialize_glyphs()
+hb_buffer_serialize_list_formats()
+
+hb_set_add_range()
+hb_set_del_range()
+hb_set_get_population()
+hb_set_next_range()
+
+hb_face_[sg]et_glyph_count()
+
+hb_segment_properties_t
+HB_SEGMENT_PROPERTIES_DEFAULT
+hb_segment_properties_equal()
+hb_segment_properties_hash()
+
+hb_buffer_set_segment_properties()
+hb_buffer_get_segment_properties()
+
+hb_ot_layout_glyph_class_t
+hb_ot_layout_get_glyph_class()
+hb_ot_layout_get_glyphs_in_class()
+
+hb_shape_plan_t
+hb_shape_plan_create()
+hb_shape_plan_create_cached()
+hb_shape_plan_get_empty()
+hb_shape_plan_reference()
+hb_shape_plan_destroy()
+hb_shape_plan_set_user_data()
+hb_shape_plan_get_user_data()
+hb_shape_plan_execute()
+hb_shape_plan_get_shaper()
+
+hb_ot_shape_plan_collect_lookups()
+
+
+API changes:
+
+- Remove "mask" parameter from hb_buffer_add().
+- Rename hb_ot_layout_would_substitute_lookup() and hb_ot_layout_substitute_closure_lookup().
+- hb-set.h API const correction.
+- Renamed hb_set_min/max() to hb_set_get_min/max().
+- Rename hb_ot_layout_feature_get_lookup_indexes() to hb_ot_layout_feature_get_lookups().
+- Rename hb_buffer_guess_properties() to hb_buffer_guess_segment_properties().
+
+
+
+Overview of changes leading to 0.9.6
+Sunday, November 13, 2012
+====================================
+
+- Don't clear pre-context text if no new context is provided.
+- Fix ReverseChainingSubstLookup, which was totally borked.
+- Adjust output format of hb-shape a bit.
+- Include config.h.in in-tree. Makes it easier for alternate build systems.
+- Fix hb_buffer_set_length(buffer, 0) invalid memory allocation.
+- Use ICU LayoutEngine's C API instead of C++. Avoids much headache.
+- Drop glyphs for all of Unicode Default_Ignorable characters.
+- Misc build fixes.
+
+Arabic shaper:
+- Enable 'dlig' and 'mset' features in Arabic shaper.
+- Implement 'Phags-pa shaping, improve Mongolian.
+
+Indic shaper:
+- Decompose Sinhala split matras the way old HarfBuzz / Pango did.
+- Initial support for Consonant Medials.
+- Start adding new-style Myanmar shaping.
+- Make reph and 'pref' logic introspect the font.
+- Route Meetei-Mayek through the Indic shaper.
+- Don't apply 'liga' in Indic shaper.
+- Improve Malayalam pre-base reordering Ra interaction with Chillus.
+
+
+
+Overview of changes leading to 0.9.5
+Sunday, October 14, 2012
+====================================
+
+- Synthetic-GSUB Arabic fallback shaping.
+
+- Misc Indic improvements.
+
+- Add build system support for pthread.
+
+- Imported UCDN for in-tree Unicode callbacks implementation.
+
+- Context-aware Arabic joining.
+
+- Misc other fixes.
+
+- New API:
+
+ hb_feature_to/from-string()
+ hb_buffer_[sg]et_content_type()
+
+
+
+Overview of changes leading to 0.9.4
+Tuesday, Sep 03, 2012
+====================================
+
+- Indic improvements with old-spec Malayalam.
+
+- Better fallback glyph positioning, specially with Thai / Lao marks.
+
+- Implement dotted-circle insertion.
+
+- Better Arabic fallback shaping / ligation.
+
+- Added ICU LayoutEngine backend for testing. Call it by the 'icu_le' name.
+
+- Misc fixes.
+
+
+
Overview of changes leading to 0.9.3
Friday, Aug 18, 2012
====================================
projects / platform / upstream / harfbuzz.git / blobdiff