0.4.1

HarfTeX 0.4.1

Version 0.4.0

• Fix abug in reading CFF table in soe fonts causing the engine to abort.
• Update luaharfbuzz to fix a logic error when populating Lua dictionaries from C arrays (#11).
• Remove the newly introduced get_char_tounicode callback, its functionality can be implemented on top if existing callbacks.
• Do not require setting font index for TTC fonts, for compatibility with LuaTeX, though setting the index is still recommended.
• Fix handling fonts with sbix table (like Apple Color Emoji).

Version 0.3.1

• Fix loading font collections when no font index is set (#7).
• Update luaharfbuzz.
• Removed unused code and Unicode data from the FontFoge fontloader module, to decrease binary size.

Version 0.3.0

• Restore FontForge-based fontloader module as few packages still depend on it (#6).
• Fix embedding "wide" Type 1 fonts (#5).
• Update to HarfBuzz 2.5.3

Version 0.2.0

• Read font parameters from OpenType tables for Type 2 fonts similar to other font types.
• Read font x-height and cap-height from the OS/2 table in addition to the now rarely used PCLT table. Also read ascender, descender ans well as stemv from the OS/2 table. Previously the engine would derive these parameters from the metrics of a hard-coded set of characters and ignore the values supplied by the font.
• Update HarfBuzz and Graphite2 to their latest releases.
• Update luaharfbuzz to fix a bug in detecting features supported by the font (#3).
• Drop dependency on ICU in favor of HarfBuzz's own Unicode character property functions, decreasing the binary size significantly (#2). However ICU might return back if we need any of its functionality.
• Emending "wide" Type 1 fonts now using the experimental FontForge-independent code, please report any bugs with such fonts.
• TTC fonts now must set the index field in the font structure, otherwise it will be assumed to be zero. Guessing the face index from the font's PostScript name is no longer supported.
• Drop old FontForge-based fontloader module, further decreasing the binary size. This might break old documents relying on such module.

Version 0.1.2

• Fix an uninitialized memory access detected by valgrind
• Detect overflow in maketexlstring() instead of silently continuing even if the string pool is full, leading to failures elsewhere.
• Drop recently add string field from glyph nodes as it was inefficient.
• Add get_glyph_string callback to be used instead of the removed string field.
• Revert fix for wrapping multi-bytes chars when printing logs, as there are other places that needs the same fix and it needs more considerations to fix properly.
• Sync with LuaTeX 1.10.1.

Version 0.1.1

• Add string field to glyph nodes. When set, HarfTeX will use it when printing the glyph nodes to the logs (e.g. in overfull box messages) instead of the font chratacter. This allows printing the actual character of the glyph for complex scripts with no one-to-one mapping between glyphs and characters.
• Show missing character warning for .notdef glyph (glyph index 0) in TrueType and OpenType fonts.
• When wrapping log lines, don’t count the bytes of multi-byte UTF-8 characters but the Unicode code points.
• Sync with final LuaTeX 1.10.0 for TeX Live 2019.
• Sync with luaharfbuzz master branch.

Version 0.1.0

First public release.

• Add \harftexversion and \harftexrevision primitives, similar to \luatexversion and \luatexrevision (which are also kept).
• Add luaharfbuzz module.
• Add get_char_tounicode callback, if set HarfTeX will use it to get the tounicode fields for font chars and cache them in the font.
• Allow setting font index from Lua for TTC fonts instead of relaying on the PostScript name to get the font index.