+Overview of changes leading to 1.2.7
+Monday, May 2, 2016
+====================================
+
+- Blacklist another version of Times New Roman (Bold) Italic from Windows 7.
+- Fix Mongolian Free Variation Selectors shaping with certain fonts.
+- Fix Tibetan shorthand contractions shaping.
+- Improved list of language tag mappings.
+- Unbreak build on Windows CE.
+- Make 'glyf' table loading lazy in hb-ot-font.
+
+
+Overview of changes leading to 1.2.6
+Friday, April 8, 2016
+====================================
+
+- Blacklist GDEF table of another set of Times New Roman (Bold) Italic.
+- DirectWrite backend improvements. Note: DirectWrite backend is
+ exclusively for our internal testing and should NOT be used in any
+ production system whatsoever.
+
+
+Overview of changes leading to 1.2.5
+Monday, April 4, 2016
+====================================
+
+- Fix GDEF mark-filtering-set, which was broken in 1.2.3.
+
+
+Overview of changes leading to 1.2.4
+Thursday, March 17, 2016
+====================================
+
+- Synthesize GDEF glyph class for any glyph that does not have one in GDEF.
+ I really hope we don't discover broken fonts that shape badly with this
+ change.
+- Misc build and other minor fixes.
+- API changes:
+ - Added HB_NDEBUG. It's fine for production systems to define this to
+ disable high-overhead debugging checks. However, I also reduced the
+ overhead of those checks, so it's a non-issue right now. You can
+ forget it. Just not defining anything at all is fine.
+
+
+Overview of changes leading to 1.2.3
+Thursday, February 25, 2016
+====================================
+
+- Blacklist GDEF table of certain versions of Times New Roman (Bold) Italic,
+ due to bug in glyph class of ASCII double-quote character. This should
+ address "regression" introduced in 1.2.0 when we switched mark zeroing
+ in most shapers from BY_UNICODE_LATE to BY_GDEF_LATE.
+ This fourth release in a week should finally stablize things...
+
+- hb-ot-font's get_glyph() implementation saw some optimizations. Though,
+ might be really hard to measure in real-world situations.
+
+- Also, two rather small API changes:
+
+We now disable some time-consuming internal bookkeeping if built with NDEBUG
+defined. This is a first time that we use NDEBUG to disable debug code. If
+there exist production systems that do NOT want to enable NDEBUG, please let
+me know and I'll add HB_NDEBUG.
+
+Added get_nominal_glyph() and get_variation_glyph() instead of get_glyph()
+
+New API:
+- hb_font_get_nominal_glyph_func_t
+- hb_font_get_variation_glyph_func_t
+- hb_font_funcs_set_nominal_glyph_func()
+- hb_font_funcs_set_variation_glyph_func()
+- hb_font_get_nominal_glyph()
+- hb_font_get_variation_glyph()
+
+Deprecated API:
+- hb_font_get_glyph_func_t
+- hb_font_funcs_set_glyph_func()
+
+Clients that implement their own font-funcs are encouraged to replace
+their get_glyph() implementation with a get_nominal_glyph() and
+get_variation_glyph() pair. The variation version can assume that
+variation_selector argument is not zero. Old (deprecated) functions
+will continue working indefinitely using internal gymnastics; it is
+just more efficient to use the new functions.
+
+
+Overview of changes leading to 1.2.2
+Wednesday, February 24, 2016
+====================================
+
+- Fix regression with mark positioning with fonts that have
+ non-zero mark advances. This was introduced in 1.2.0 while
+ trying to make mark and cursive attachments to work together.
+ I have partially reverted that, so this version is much more
+ like what we had before. All clients who updated to 1.2.0
+ should update to this version.
+
+
+Overview of changes leading to 1.2.1
+Tuesday, February 23, 2016
+====================================
+
+- CoreText: Fix bug with wrong scale if font scale was changed later.
+ https://github.com/libass/libass/issues/212
+- CoreText: Drastically speed up font initialization.
+- CoreText: Fix tiny leak.
+- Group ZWJ/ZWNJ with previous syllable under cluster-level=0.
+ https://github.com/behdad/harfbuzz/issues/217
+- Add test/shaping/README.md about how to add tests to the suite.
+
+
+Overview of changes leading to 1.2.0
+Friday, February 19, 2016
+====================================
+
+- Fix various issues (hangs mostly) in case of memory allocation failure.
+- Change mark zeroing types of most shapers from BY_UNICODE_LATE to
+ BY_GDEF_LATE. This seems to be what Uniscribe does.
+- Change mark zeroing of USE shaper from NONE to BY_GDEF_EARLY. That's
+ what Windows does.
+- Allow GPOS cursive connection on marks, and fix the interaction with
+ mark attachment. This work resulted in some changes to how mark
+ attachments work. See:
+ https://github.com/behdad/harfbuzz/issues/211
+ https://github.com/behdad/harfbuzz/commit/86c68c7a2c971efe8e35b1f1bd99401dc8b688d2
+- Graphite2 shaper: improved negative advance handling (eg. Nastaliq).
+- Add nmake-based build system for Windows.
+- Minor speedup.
+- Misc. improvements.
+
+
+Overview of changes leading to 1.1.3
+Monday, January 11, 2016
+====================================
+
+- Ported Indic shaper to Unicode 8.0 data.
+- Universal Shaping Engine fixes.
+- Speed up CoreText shaper when font fallback happens in CoreText.
+- Documentation improvements, thanks to Khaled Hosny.
+- Very rough directwrite shaper for testing, thanks to Ebrahim Byagowi.
+- Misc bug fixes.
+- New API:
+
+ * Font extents:
+ hb_font_extents_t
+ hb_font_get_font_extents_func_t
+ hb_font_get_font_h_extents_func_t
+ hb_font_get_font_v_extents_func_t
+ hb_font_funcs_set_font_h_extents_func
+ hb_font_funcs_set_font_v_extents_func
+ hb_font_get_h_extents
+ hb_font_get_v_extents
+ hb_font_get_extents_for_direction
+
+ * Buffer message (aka debug):
+ hb_buffer_message_func_t
+ hb_buffer_set_message_func()
+ Actual message protocol to be fleshed out later.
+
+
+Overview of changes leading to 1.1.2
+Wednesday, November 26, 2015
+====================================
+
+- Fix badly-broken fallback shaper that affected terminology.
+ https://github.com/behdad/harfbuzz/issues/187
+- Fix y_scaling in Graphite shaper.
+- API changes:
+ * An unset glyph_h_origin() function in font-funcs now (sensibly)
+ implies horizontal origin at 0,0. Ie, the nil callback returns
+ true instead of false. As such, implementations that have a
+ glyph_h_origin() that simply returns true, can remove that function
+ with HarfBuzz >= 1.1.2. This results in a tiny speedup.
+
+
+Overview of changes leading to 1.1.1
+Wednesday, November 24, 2015
+====================================
+
+- Build fixes, specially for hb-coretext.
+
+
+Overview of changes leading to 1.1.0
+Wednesday, November 18, 2015
+====================================
+
+- Implement 'stch' stretch feature for Syriac Abbreviation Mark.
+ https://github.com/behdad/harfbuzz/issues/141
+- Disable use of decompose_compatibility() callback.
+- Implement "shaping" of various Unicode space characters, even
+ if the font does not support them.
+ https://github.com/behdad/harfbuzz/issues/153
+- If font does not support U+2011 NO-BREAK HYPHEN, fallback to
+ U+2010 HYPHEN.
+- Changes resulting from libFuzzer continuous fuzzing:
+ * Reject font tables that need more than 8 edits,
+ * Bound buffer growth during shaping to 32x,
+ * Fix assertions and other issues at OOM / buffer max-growth.
+- Misc fixes and optimizations.
+- API changes:
+ * All fonts created with hb_font_create() now inherit from
+ (ie. have parent) hb_font_get_empty().
+
+
+Overview of changes leading to 1.0.6
+Thursday, October 15, 2015
+====================================
+
+- Reduce max nesting level in OT lookups from 8 to 6.
+ Should not affect any real font as far as I know.
+- Fix memory access issue in ot-font.
+- Revert default load-flags of fonts created using hb_ft_font_create()
+ back to FT_LOAD_DEFAULT|FT_LOAD_NO_HINTING. This was changed in
+ last release (1.0.5), but caused major issues, so revert.
+ https://github.com/behdad/harfbuzz/issues/143
+
+
+Overview of changes leading to 1.0.5
+Tuesday, October 13, 2015
+====================================
+
+- Fix multiple memory access bugs discovered using libFuzzer.
+ https://github.com/behdad/harfbuzz/issues/139
+ Everyone should upgrade to this version as soon as possible.
+ We now have continuous fuzzing set up, to avoid issues like
+ these creeping in again.
+- Misc fixes.
+
+- New API:
+ * hb_font_set_parent().
+ * hb_ft_font_[sg]et_load_flags()
+ The default flags for fonts created using hb_ft_font_create()
+ has changed to default to FT_LOAD_DEFAULT now. Previously it
+ was defaulting to FT_LOAD_DFEAULT|FT_LOAD_NO_HINTING.
+
+- API changes:
+ * Fonts now default to units-per-EM as their scale, instead of 0.
+ * hb_font_create_sub_font() does NOT make parent font immutable
+ anymore. hb_font_make_immutable() does.
+
+
+Overview of changes leading to 1.0.4
+Wednesday, September 30, 2015
+====================================
+
+- Fix minor out-of-bounds read error.
+
+
+Overview of changes leading to 1.0.3
+Tuesday, September 1, 2015
+====================================
+
+- Start of user documentation, from Simon Cozens!
+- Implement glyph_extents() for TrueType fonts in hb-ot-font.
+- Improve GPOS cursive attachments with conflicting lookups.
+- More fixes for cluster-level = 1.
+- Uniscribe positioning fix.
+
+
+Overview of changes leading to 1.0.2
+Wednesday, August 19, 2015
+====================================
+
+- Fix shaping with cluster-level > 0.
+- Fix Uniscribe backend font-size scaling.
+- Declare dependencies in harfbuzz.pc.
+ FreeType is not declared though, to avoid bugs in pkg-config
+ 0.26 with recursive dependencies.
+- Slightly improved debug infrastructure. More to come later.
+- Misc build fixes.
+
+
+Overview of changes leading to 1.0.1
+Monday, July 27, 2015
+====================================
+
+- Fix out-of-bounds access in USE shaper.
+
+
+Overview of changes leading to 1.0.0
+Sunday, July 26, 2015
+====================================
+
+- Implement Universal Shaping Engine:
+ https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm
+ http://blogs.windows.com/bloggingwindows/2015/02/23/windows-shapes-the-worlds-languages/
+- Bump version to 1.0.0. The soname was NOT bumped.
+
+
+Overview of changes leading to 0.9.42
+Thursday, July 26, 2015
+=====================================
+
+- New API to allow for retrieving finer-grained cluster
+ mappings if the client desires to handle them. Default
+ behavior is unchanged.
+- Fix cluster merging when removing default-ignorables.
+- Update to Unicode 8.0
+- hb-graphite2 fixes.
+- Misc fixes.
+- Removed HB_NO_MERGE_CLUSTERS hack.
+- New API:
+ hb_buffer_cluster_level_t enum
+ hb_buffer_get_cluster_level()
+ hb_buffer_set_cluster_level()
+ hb-shape / hb-view --cluster-level
+
+
+Overview of changes leading to 0.9.41
+Thursday, June 18, 2015
+=====================================
+
+- Fix hb-coretext with trailing whitespace in right-to-left.
+- New API: hb_buffer_reverse_range().
+- Allow implementing atomic ops in config.h.
+- Fix hb_language_t in language bindings.
+- Misc fixes.
+
+
+Overview of changes leading to 0.9.40
+Friday, March 20, 2015
+=====================================
+
+- Another hb-coretext crasher fix. Ouch!
+- Happy Norouz!
+
+
+Overview of changes leading to 0.9.39
+Wednesday, March 4, 2015
+=====================================
+
+- Critical hb-coretext fixes.
+- Optimizations and refactoring; no functional change
+ expected.
+- Misc build fixes.
+
+
+Overview of changes leading to 0.9.38
+Friday, January 23, 2015
+=====================================
+
+- Fix minor out-of-bounds access in Indic shaper.
+- Change New Tai Lue shaping engine from South-East Asian to default,
+ reflecting change in Unicode encoding model.
+- Add hb-shape --font-size. Can take up to two numbers for separate
+ x / y size.
+- Fix CoreText and FreeType scale issues with negative scales.
+- Reject blobs larger than 2GB. This might break some icu-le-hb clients
+ that need security fixes. See:
+ http://www.icu-project.org/trac/ticket/11450
+- Avoid accessing font tables during face destruction, in casce rogue
+ clients released face data already.
+- Fix up gobject-introspection a bit. Python bindings kinda working.
+ See README.python.
+- Misc fixes.
+- API additions:
+ hb_ft_face_create_referenced()
+ hb_ft_font_create_referenced()
+
+
+Overview of changes leading to 0.9.37
+Wednesday, December 17, 2014
+=====================================
+
+- Fix out-of-bounds access in Context lookup format 3.
+- Indic: Allow ZWJ/ZWNJ before syllable modifiers.
+
+
+Overview of changes leading to 0.9.36
+Thursday, November 20, 2014
+=====================================
+
+- First time that three months went by without a release since
+ 0.9.2 was released on August 10, 2012!
+- Fix performance bug in hb_ot_collect_glyphs():
+ https://bugzilla.mozilla.org/show_bug.cgi?id=1090869
+- Add basic vertical-text support to hb-ot-font.
+- Misc build fixes.
+
+
+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