fonttools 3.29.1

The TTX file format

The following tables are currently supported:

BASE, CBDT, CBLC, CFF, CFF2, COLR, CPAL, DSIG, EBDT, EBLC, FFTM,
Feat, GDEF, GMAP, GPKG, GPOS, GSUB, Glat, Gloc, HVAR, JSTF, LTSH,
MATH, META, MVAR, OS/2, SING, STAT, SVG, Silf, Sill, TSI0, TSI1,
TSI2, TSI3, TSI5, TSIB, TSID, TSIJ, TSIP, TSIS, TSIV, TTFA, VDMX,
VORG, VVAR, ankr, avar, bsln, cidg, cmap, cvar, cvt, feat, fpgm,
fvar, gasp, gcid, glyf, gvar, hdmx, head, hhea, hmtx, kern, lcar,
loca, ltag, maxp, meta, mort, morx, name, opbd, post, prep, prop,
sbix, trak, vhea and vmtx

Other tables are dumped as hexadecimal data.

TrueType fonts use glyph indices (GlyphIDs) to refer to glyphs in most places. While this is fine in binary form, it is really hard to work with for humans. Therefore we use names instead.

The glyph names are either extracted from the CFF table or the post table, or are derived from a Unicode cmap table. In the latter case the Adobe Glyph List is used to calculate names based on Unicode values. If all of these methods fail, names are invented based on GlyphID (eg glyph00142)

It is possible that different glyphs use the same name. If this happens, we force the names to be unique by appending #n to the name (n being an integer number.) The original names are being kept, so this has no influence on a “round tripped” font.

Because the order in which glyphs are stored inside the binary font is important, we maintain an ordered list of glyph names in the font.

Optional Requirements

The fontTools package currently has no (required) external dependencies besides the modules included in the Python Standard Library. However, a few extra dependencies are required by some of its modules, which are needed to unlock optional features.

• Lib/fontTools/ttLib/woff2.py

  Module to compress/decompress WOFF 2.0 web fonts; it requires:

  • brotli: Python bindings of the Brotli compression library.

• Lib/fontTools/ttLib/sfnt.py

  To better compress WOFF 1.0 web fonts, the following module can be used instead of the built-in zlib library:

  • zopfli: Python bindings of the Zopfli compression library.

• Lib/fontTools/unicode.py

  To display the Unicode character names when dumping the cmap table with ttx we use the unicodedata module in the Standard Library. The version included in there varies between different Python versions. To use the latest available data, you can install:

  • unicodedata2: unicodedata backport for Python 2.7 and 3.5 updated to the latest Unicode version 9.0. Note this is not necessary if you use Python 3.6 as the latter already comes with an up-to-date unicodedata.

• Lib/fontTools/varLib/interpolatable.py

  Module for finding wrong contour/component order between different masters. It requires one of the following packages in order to solve the so-called “minimum weight perfect matching problem in bipartite graphs”, or the Assignment problem:

  • scipy: the Scientific Library for Python, which internally uses NumPy arrays and hence is very fast;

  • munkres: a pure-Python module that implements the Hungarian or Kuhn-Munkres algorithm.

• Lib/fontTools/misc/symfont.py

  Advanced module for symbolic font statistics analysis; it requires:

  • sympy: the Python library for symbolic mathematics.

• Lib/fontTools/t1Lib.py

  To get the file creator and type of Macintosh PostScript Type 1 fonts on Python 3 you need to install the following module, as the old MacOS module is no longer included in Mac Python:

  • xattr: Python wrapper for extended filesystem attributes (macOS platform only).

• Lib/fontTools/pens/cocoaPen.py

  Pen for drawing glyphs with Cocoa NSBezierPath, requires:

  • PyObjC: the bridge between Python and the Objective-C runtime (macOS platform only).

• Lib/fontTools/pens/qtPen.py

  Pen for drawing glyphs with Qt’s QPainterPath, requires:

  • PyQt5: Python bindings for the Qt cross platform UI and application toolkit.

• Lib/fontTools/pens/reportLabPen.py

  Pen to drawing glyphs as PNG images, requires:

  • reportlab: Python toolkit for generating PDFs and graphics.

• Lib/fontTools/inspect.py

  A GUI font inspector, requires one of the following packages:

  • PyGTK: Python bindings for GTK  2.x (only works with Python 2).

  • PyGObject : Python bindings for GTK 3.x and gobject-introspection libraries (also compatible with Python 3).

3.29.1 (released 2018-09-10)

• [feaLib] Fixed issue whereby lookups from DFLT/dflt were not included in the DFLT/non-dflt language systems (#1307).

• [graphite] Fixed issue on big-endian architectures (e.g. ppc64) (#1311).

• [subset] Added --layout-scripts option to add/exclude set of OpenType layout scripts that will be preserved. By default all scripts are retained ('*') (#1303).

3.29.0 (released 2018-07-26)

• [feaLib] In the OTL table builder, when the name table is excluded from the list of tables to be build, skip compiling featureNames blocks, as the records referenced in FeatureParams table don’t exist (68951b7).

• [otBase] Try ExtensionLookup if other offset-overflow methods fail (05f95f0).

• [feaLib] Added support for explicit subtable; break statements in PairPos lookups; previously these were ignored (#1279, #1300, #1302).

• [cffLib.specializer] Make sure the stack depth does not exceed maxstack - 1, so that a subroutinizer can insert subroutine calls (#1301, https://github.com/googlei18n/ufo2ft/issues/266).

• [otTables] Added support for fixing offset overflow errors occurring inside MarkBasePos subtables (#1297).

• [subset] Write the default output file extension based on --flavor option, or the value of TTFont.sfntVersion (d7ac0ad).

• [unicodedata] Updated Blocks, Scripts and ScriptExtensions for Unicode 11 (452c85e).

• [xmlWriter] Added context manager to XMLWriter class to autoclose file descriptor on exit (#1290).

• [psCharStrings] Optimize the charstring’s bytecode by encoding as integers all float values that have no decimal portion (8d7774a).

• [ttFont] Fixed missing import of TTLibError exception (#1285).

• [feaLib] Allow any languages other than dflt under DFLT script (#1278, #1292).

3.28.0 (released 2018-06-19)

• [featureVars] Added experimental module to build FeatureVariations tables. Still needs to be hooked up to varLib.build (#1240).

• [fixedTools] Added otRound to round floats to nearest integer towards positive Infinity. This is now used where we deal with visual data like X/Y coordinates, advance widths/heights, variation deltas, and similar (#1274, #1248).

• [subset] Improved GSUB closure memoize algorithm.

• [varLib.models] Fixed regression in model resolution (180124, #1269).

• [feaLib.ast] Fixed error when converting SubtableStatement to string (#1275).

• [varLib.mutator] Set OS/2.usWeightClass and usWidthClass, and post.italicAngle based on the ‘wght’, ‘wdth’ and ‘slnt’ axis values (#1276, #1264).

• [py23/loggingTools] Don’t automatically set logging.lastResort handler on py27. Moved LastResortLogger to the loggingTools module (#1277).

3.27.1 (released 2018-06-11)

• [ttGlyphPen] Issue a warning and skip building non-existing components (https://github.com/googlei18n/fontmake/issues/411).

• [tests] Fixed issue running ttx_test.py from a tagged commit.

3.27.0 (released 2018-06-11)

• [designspaceLib] Added new conditionSet element to rule element in designspace document. Bumped format attribute to 4.0 (previously, it was formatted as an integer). Removed checkDefault, checkAxes methods, and any kind of guessing about the axes when the <axes> element is missing. The default master is expected at the intersection of all default values for each axis (#1254, #1255, #1267).

• [cffLib] Fixed issues when compiling CFF2 or converting from CFF when the font has an FDArray (#1211, #1271).

• [varLib] Avoid attempting to build cvar table when glyf table is not present, as is the case for CFF2 fonts.

• [subset] Handle None coverages in MarkGlyphSets; revert commit 02616ab that sets empty Coverage tables in MarkGlyphSets to None, to make OTS happy.

• [ttFont] Allow to build glyph order from maxp.numGlyphs when post or cmap are missing.

• [ttFont] Added __len__ method to _TTGlyphSet.

• [glyf] Ensure GlyphCoordinates never overflow signed shorts (#1230).

• [py23] Added alias for itertools.izip shadowing the built-in zip.

• [loggingTools] Memoize log property of LogMixin class (fbab12).

• [ttx] Impoved test coverage (#1261).

• [Snippets] Addded script to append a suffix to all family names in a font.

• [varLib.plot] Make it work with matplotlib >= 2.1 (b38e2b).

3.26.0 (released 2018-05-03)

• [designspace] Added a new optional layer attribute to the source element, and a corresponding layerName attribute to the SourceDescriptor object (#1253). Added conditionset element to the rule element to the spec, but not implemented in designspace reader/writer yet (#1254).

• [varLib.models] Refine modeling one last time (0ecf5c5).

• [otBase] Fixed sharing of tables referred to by different offset sizes (795f2f9).

• [subset] Don’t drop a GDEF that only has VarStore (fc819d6). Set to None empty Coverage tables in MarkGlyphSets (02616ab).

• [varLib]: Added --master-finder command-line option (#1249).

• [varLib.mutator] Prune fvar nameIDs from instance’s name table (#1245).

• [otTables] Allow decompiling bad ClassDef tables with invalid format, with warning (#1236).

• [varLib] Make STAT v1.2 and reuse nameIDs from fvar table (#1242).

• [varLib.plot] Show master locations. Set axis limits to -1, +1.

• [subset] Handle HVAR direct mapping. Passthrough ‘cvar’. Added --font-number command-line option for collections.

• [t1Lib] Allow a text encoding to be specified when parsing a Type 1 font (#1234). Added kind argument to T1Font constructor (c5c161c).

• [ttLib] Added context manager API to TTFont class, so it can be used in with statements to auto-close the file when exiting the context (#1232).

3.25.0 (released 2018-04-03)

• [varLib] Improved support-resolution algorithm. Previously, the on-axis masters would always cut the space. They don’t anymore. That’s more consistent, and fixes the main issue Erik showed at TYPO Labs 2017. Any varfont built that had an unusual master configuration will change when rebuilt (42bef17, a523a697, https://github.com/googlei18n/fontmake/issues/264).

• [varLib.models] Added a main() entry point, that takes positions and prints model results.

• [varLib.plot] Added new module to plot a designspace’s VariationModel. Requires matplotlib.

• [varLib.mutator] Added -o option to specify output file path (2ef60fa).

• [otTables] Fixed IndexError while pruning of HVAR pre-write (6b6c34a).

• [varLib.models] Convert delta array to floats if values overflows signed short integer (0055f94).

3.24.2 (released 2018-03-26)

• [otBase] Don’t fail during ValueRecord copy if src has more items. We drop hinting in the subsetter by simply changing ValueFormat, without cleaning up the actual ValueRecords. This was causing assertion error if a variable font was subsetted without hinting and then passed directly to the mutator for instantiation without first it saving to disk.

3.24.1 (released 2018-03-06)

• [varLib] Don’t remap the same DeviceTable twice in VarStore optimizer (#1206).

• [varLib] Add --disable-iup option to fonttools varLib script, and a optimize=True keyword argument to varLib.build function, to optionally disable IUP optimization while building varfonts.

• [ttCollection] Fixed issue while decompiling ttc with python3 (#1207).

3.24.0 (released 2018-03-01)

• [ttGlyphPen] Decompose composite glyphs if any components’ transform is too large to fit a F2Dot14 value, or clamp transform values that are (almost) equal to +2.0 to make them fit and avoid decomposing (#1200, #1204, #1205).

• [ttx] Added new -g option to dump glyphs from the glyf table splitted as individual ttx files (#153, #1035, #1132, #1202).

• Copied ufoLib.filenames module to fontTools.misc.filenames, used for the ttx split-glyphs option (#1202).

• [feaLib] Added support for cvParameters blocks in Character Variant feautures cv01-cv99 (#860, #1169).

• [Snippets] Added checksum.py script to generate/check SHA1 hash of ttx files (#1197).

• [varLib.mutator] Fixed issue while instantiating some variable fonts whereby the horizontal advance width computed from gvar phantom points could turn up to be negative (#1198).

• [varLib/subset] Fixed issue with subsetting GPOS variation data not picking up ValueRecord Device objects (54fd71f).

• [feaLib/voltLib] In all AST elements, the location is no longer a required positional argument, but an optional kewyord argument (defaults to None). This will make it easier to construct feature AST from code (#1201).

3.23.0 (released 2018-02-26)

• [designspaceLib] Added an optional lib element to the designspace as a whole, as well as to the instance elements, to store arbitrary data in a property list dictionary, similar to the UFO’s lib. Added an optional font attribute to the SourceDescriptor, to allow operating on in-memory font objects (#1175).

• [cffLib] Fixed issue with lazy-loading of attributes when attempting to set the CFF TopDict.Encoding (#1177, #1187).

• [ttx] Fixed regression introduced in 3.22.0 that affected the split tables -s option (#1188).

• [feaLib] Added IncludedFeaNotFound custom exception subclass, raised when an included feature file cannot be found (#1186).

• [otTables] Changed VarIdxMap to use glyph names internally instead of glyph indexes. The old ttx dumps of HVAR/VVAR tables that contain indexes can still be imported (21cbab8, 38a0ffb).

• [varLib] Implemented VarStore optimizer (#1184).

• [subset] Implemented pruning of GDEF VarStore, HVAR and MVAR (#1179).

• [sfnt] Restore backward compatiblity with numFonts attribute of SFNTReader object (#1181).

• [merge] Initial support for merging LangSysRecords (#1180).

• [ttCollection] don’t seek(0) when writing to possibly unseekable strems.

• [subset] Keep all --name-IDs from 0 to 6 by default (#1170, #605, #114).

• [cffLib] Added width module to calculate optimal CFF default and nominal glyph widths.

• [varLib] Don’t fail if STAT already in the master fonts (#1166).

3.22.0 (released 2018-02-04)

• [subset] Support subsetting endchar acting as seac-like components in CFF (fixes #1162).

• [feaLib] Allow to build from pre-parsed ast.FeatureFile object. Added tables argument to only build some tables instead of all (#1159, #1163).

• [textTools] Replaced safeEval with ast.literal_eval (#1139).

• [feaLib] Added option to the parser to not resolve include statements (#1154).

• [ttLib] Added new ttCollection module to read/write TrueType and OpenType Collections. Exports a TTCollection class with a fonts attribute containing a list of TTFont instances, the methods save and saveXML, plus some list-like methods. The importXML method is not implemented yet (#17).

• [unicodeadata] Added ot_tag_to_script function that converts from OpenType script tag to Unicode script code.

• Added new designspaceLib subpackage, originally from Erik Van Blokland’s designSpaceDocument: https://github.com/LettError/designSpaceDocument NOTE: this is not yet used internally by varLib, and the API may be subject to changes (#911, #1110, LettError/designSpaceDocument#28).

• Added new FontTools icon images (8ee7c32).

• [unicodedata] Added script_horizontal_direction function that returns either “LTR” or “RTL” given a unicode script code.

• [otConverters] Don’t write descriptive name string as XML comment if the NameID value is 0 (== NULL) (#1151, #1152).

• [unicodedata] Add ot_tags_from_script function to get the list of OpenType script tags associated with unicode script code (#1150).

• [feaLib] Don’t error when “enumerated” kern pairs conflict with preceding single pairs; emit warning and chose the first value (#1147, #1148).

• [loggingTools] In CapturingLogHandler.assertRegex method, match the fully formatted log message.

• [sbix] Fixed TypeError when concatenating str and bytes (#1154).

• [bezierTools] Implemented cusp support and removed approximate_fallback arg in calcQuadraticArcLength. Added calcCubicArcLength (#1142).

3.21.2 (released 2018-01-08)

• [varLib] Fixed merging PairPos Format1/2 with missing subtables (#1125).

3.21.1 (released 2018-01-03)

• [feaLib] Allow mixed single/multiple substitutions (#612)

• Added missing *.afm test assets to MAINFEST.in (#1137).

• Fixed dumping SVG tables containing color palettes (#1124).

3.21.0 (released 2017-12-18)

• [cmap] when compiling format6 subtable, don’t assume gid0 is always called ‘.notdef’ (1e42224).

• [ot] Allow decompiling fonts with bad Coverage format number (1aafae8).

• Change FontTools licence to MIT (#1127).

• [post] Prune extra names already in standard Mac set (df1e8c7).

• [subset] Delete empty SubrsIndex after subsetting (#994, #1118).

• [varLib] Don’t share points in cvar by default, as it currently fails on some browsers (#1113).

• [afmLib] Make poor old afmLib work on python3.

3.20.1 (released 2017-11-22)

• [unicodedata] Fixed issue with script and script_extension functions returning inconsistent short vs long names. They both return the short four- letter script codes now. Added script_name and script_code functions to look up the long human-readable script name from the script code, and viceversa (#1109, #1111).

3.20.0 (released 2017-11-21)

• [unicodedata] Addded new module fontTools.unicodedata which exports the same interface as the built-in unicodedata module, with the addition of a few functions that are missing from the latter, such as script, script_extension and block. Added a MetaTools/buildUCD.py script to download and parse data files from the Unicode Character Database and generate python modules containing lists of ranges and property values.

• [feaLib] Added __str__ method to all ast elements (delegates to the asFea method).

• [feaLib] Parser constructor now accepts a glyphNames iterable instead of glyphMap dict. The latter still works but with a pending deprecation warning (#1104).

• [bezierTools] Added arc length calculation functions originally from pens.perimeterPen module (#1101).

• [varLib] Started generating STAT table (8af4309). Right now it just reflects the axes, and even that with certain limitations: * AxisOrdering is set to the order axes are defined, * Name-table entries are not shared with fvar.

• [py23] Added backports for redirect_stdout and redirect_stderr context managers (#1097).

• [Graphite] Fixed some round-trip bugs (#1093).

3.19.0 (released 2017-11-06)

• [varLib] Try set of used points instead of all points when testing whether to share points between tuples (#1090).

• [CFF2] Fixed issue with reading/writing PrivateDict BlueValues to TTX file. Read the commit message 8b02b5a and issue #1030 for more details. NOTE: this change invalidates all the TTX files containing CFF2 tables that where dumped with previous verisons of fonttools. CFF2 Subr items can have values on the stack after the last operator, thus a CFF2Subr class was added to accommodate this (#1091).

• [_k_e_r_n] Fixed compilation of AAT kern version=1.0 tables (#1089, #1094)

• [ttLib] Added getBestCmap() convenience method to TTFont class and cmap table class that returns a preferred Unicode cmap subtable given a list of options (#1092).

• [morx] Emit more meaningful subtable flags. Implement InsertionMorphAction

3.18.0 (released 2017-10-30)

• [feaLib] Fixed writing back nested glyph classes (#1086).

• [TupleVariation] Reactivated shared points logic, bugfixes (#1009).

• [AAT] Implemented morx ligature subtables (#1082).

• [reverseContourPen] Keep duplicate lineTo following a moveTo (#1080, https://github.com/googlei18n/cu2qu/issues/51).

• [varLib.mutator] Suport instantiation of GPOS, GDEF and MVAR (#1079).

• [sstruct] Fixed issue with unicode_literals and struct module in old versions of python 2.7 (#993).

3.17.0 (released 2017-10-16)

• [svgPathPen] Added an SVGPathPen that translates segment pen commands into SVG path descriptions. Copied from Tal Leming’s ufo2svg.svgPathPen https://github.com/typesupply/ufo2svg/blob/d69f992/Lib/ufo2svg/svgPathPen.py

• [reverseContourPen] Added ReverseContourPen, a filter pen that draws contours with the winding direction reversed, while keeping the starting point (#1071).

• [filterPen] Added ContourFilterPen to manipulate contours as a whole rather than segment by segment.

• [arrayTools] Added Vector class to apply math operations on an array of numbers, and pairwise function to loop over pairs of items in an iterable.

• [varLib] Added support for building and interpolation of cvar table (f874cf6, a25a401).

3.16.0 (released 2017-10-03)

• [head] Try using SOURCE_DATE_EPOCH environment variable when setting the head modified timestamp to ensure reproducible builds (#1063). See https://reproducible-builds.org/specs/source-date-epoch/

• [VTT] Decode VTT’s TSI* tables text as UTF-8 (#1060).

• Added support for Graphite font tables: Feat, Glat, Gloc, Silf and Sill. Thanks @mhosken! (#1054).

• [varLib] Default to using axis “name” attribute if “labelname” element is missing (588f524).

• [merge] Added support for merging Script records. Remove unused features and lookups after merge (d802580, 556508b).

• Added fontTools.svgLib package. Includes a parser for SVG Paths that supports the Pen protocol (#1051). Also, added a snippet to convert SVG outlines to UFO GLIF (#1053).

• [AAT] Added support for ankr, bsln, mort, morx, gcid, and cidg.

• [subset] Implemented subsetting of prop, opbd, bsln, lcar.

3.15.1 (released 2017-08-18)

• [otConverters] Implemented __add__ and __radd__ methods on otConverters._LazyList that decompile a lazy list before adding it to another list or _LazyList instance. Fixes an AttributeError in the subset module when attempting to sum _LazyList objects (6ef48bd2, 1aef1683).

• [AAT] Support the opbd table with optical bounds (a47f6588).

• [AAT] Support prop table with glyph properties (d05617b4).

3.15.0 (released 2017-08-17)

• [AAT] Added support for AAT lookups. The lcar table can be decompiled and recompiled; futher work needed to handle morx table (#1025).

• [subset] Keep (empty) DefaultLangSys for Script ‘DFLT’ (6eb807b5).

• [subset] Support GSUB/GPOS.FeatureVariations (fe01d87b).

• [varLib] In models.supportScalars, ignore an axis when its peak value is 0 (fixes #1020).

• [varLib] Add default mappings to all axes in avar to fix rendering issue in some rasterizers (19c4b377, 04eacf13).

• [varLib] Flatten multiple tail PairPosFormat2 subtables before merging (c55ef525).

• [ttLib] Added support for recalculating font bounding box in CFF and head tables, and min/max values in hhea and vhea tables (#970).

3.14.0 (released 2017-07-31)

• [varLib.merger] Remove Extensions subtables before merging (f7c20cf8).

• [varLib] Initialize the avar segment map with required default entries (#1014).

• [varLib] Implemented optimal IUP optmiziation (#1019).

• [otData] Add AxisValueFormat4 for STAT table v1.2 from OT v1.8.2 (#1015).

• [name] Fixed BCP46 language tag for Mac langID=9: ‘si’ -> ‘sl’.

• [subset] Return value from _DehintingT2Decompiler.op_hintmask (c0d672ba).

• [cffLib] Allow to get TopDict by index as well as by name (dca96c9c).

• [cffLib] Removed global isCFF2 state; use one set of classes for both CFF and CFF2, maintaining backward compatibility existing code (#1007).

• [cffLib] Deprecated maxstack operator, per OpenType spec update 1.8.1.

• [cffLib] Added missing default (-100) for UnderlinePosition (#983).

• [feaLib] Enable setting nameIDs greater than 255 (#1003).

• [varLib] Recalculate ValueFormat when merging SinglePos (#996).

• [varLib] Do not emit MVAR if there are no entries in the variation store (#987).

• [ttx] For -x option, pad with space if table tag length is < 4.

3.13.1 (released 2017-05-30)

• [feaLib.builder] Removed duplicate lookups optimization. The original lookup order and semantics of the feature file are preserved (#976).

3.13.0 (released 2017-05-24)

• [varLib.mutator] Implement IUP optimization (#969).

• [_g_l_y_f.GlyphCoordinates] Changed __bool__() semantics to match those of other iterables (e46f949). Removed __abs__() (3db5be2).

• [varLib.interpolate_layout] Added mapped keyword argument to interpolate_layout to allow disabling avar mapping: if False (default), the location is mapped using the map element of the axes in designspace file; if True, it is assumed that location is in designspace’s internal space and no mapping is performed (#950, #975).

• [varLib.interpolate_layout] Import designspace-loading logic from varLib.

• [varLib] Fixed bug with recombining PairPosClass2 subtables (81498e5, #914).

• [cffLib.specializer] When copying iterables, cast to list (462b7f86).

3.12.1 (released 2017-05-18)

• [pens.t2CharStringPen] Fixed AttributeError when calling addComponent in T2CharStringPen (#965).

3.12.0 (released 2017-05-17)

• [cffLib.specializer] Added new specializer module to optimize CFF charstrings, used by the T2CharStringPen (#948).

• [varLib.mutator] Sort glyphs by component depth before calculating composite glyphs’ bounding boxes to ensure deltas are correctly caclulated (#945).

• [_g_l_y_f] Fixed loss of precision in GlyphCoordinates by using ‘d’ (double) instead of ‘f’ (float) as array.array typecode (#963, #964).

3.11.0 (released 2017-05-03)

• [t2CharStringPen] Initial support for specialized Type2 path operators: vmoveto, hmoveto, vlineto, hlineto, vvcurveto, hhcurveto, vhcurveto and hvcurveto. This should produce more compact charstrings (#940, #403).

• [Doc] Added Sphinx sources for the documentation. Thanks @gferreira (#935).

• [fvar] Expose flags in XML (#932)

• [name] Add helper function for building multi-lingual names (#921)

• [varLib] Fixed kern merging when a PairPosFormat2 has ClassDef1 with glyphs that are NOT present in the Coverage (1b5e1c4, #939).

• [varLib] Fixed non-deterministic ClassDef order with PY3 (f056c12, #927).

• [feLib] Throw an error when the same glyph is defined in multiple mark classes within the same lookup (3e3ff00, #453).

3.10.0 (released 2017-04-14)

• [varLib] Added support for building avar table, using the designspace <map> elements.

• [varLib] Removed unused build(..., axisMap) argument. Axis map should be specified in designspace file now. We do not accept nonstandard axes if <axes> element is not present.

• [varLib] Removed “custom” axis from the standard_axis_map. This was added before when glyphsLib was always exporting the (unused) custom axis.

• [varLib] Added partial support for building MVAR table; does not implement gasp table variations yet.

• [pens] Added FilterPen base class, for pens that control another pen; factored out addComponent method from BasePen into a separate abstract DecomposingPen class; added DecomposingRecordingPen, which records components decomposed as regular contours.

• [TSI1] Fixed computation of the textLength of VTT private tables (#913).

• [loggingTools] Added LogMixin class providing a log property to subclasses, which returns a logging.Logger named after the latter.

• [loggingTools] Added assertRegex method to CapturingLogHandler.

• [py23] Added backport for python 3’s types.SimpleNamespace class.

• [EBLC] Fixed issue with python 3 zip iterator.

3.9.2 (released 2017-04-08)

• [pens] Added pen to draw glyphs using WxPython GraphicsPath class: https://wxpython.org/docs/api/wx.GraphicsPath-class.html

• [varLib.merger] Fixed issue with recombining multiple PairPosFormat2 subtables (#888)

• [varLib] Do not encode gvar deltas that are all zeroes, or if all values are smaller than tolerance.

• [ttLib] _TTGlyphSet glyphs now also have height and tsb (top side bearing) attributes from the vmtx table, if present.

• [glyf] In GlyphCoordintes class, added __bool__ / __nonzero__ methods, and array property to get raw array.

• [ttx] Support reading TTX files with BOM (#896)

• [CFF2] Fixed the reporting of the number of regions in the font.

3.9.1 (released 2017-03-20)

• [varLib.merger] Fixed issue while recombining multiple PairPosFormat2 subtables if they were split because of offset overflows (9798c30).

• [varLib.merger] Only merge multiple PairPosFormat1 subtables if there is at least one of the fonts with a non-empty Format1 subtable (0f5a46b).

• [varLib.merger] Fixed IndexError with empty ClassDef1 in PairPosFormat2 (aad0d46).

• [varLib.merger] Avoid reusing Class2Record (mutable) objects (e6125b3).

• [varLib.merger] Calculate ClassDef1 and ClassDef2’s Format when merging PairPosFormat2 (23511fd).

• [macUtils] Added missing ttLib import (b05f203).

3.9.0 (released 2017-03-13)

• [feaLib] Added (partial) support for parsing feature file comments # ... appearing in between statements (#879).

• [feaLib] Cleaned up syntax tree for FeatureNames.

• [ttLib] Added support for reading/writing CFF2 table (thanks to @readroberts at Adobe), and TTFA (ttfautohint) table.

• [varLib] Fixed regression introduced with 3.8.0 in the calculation of NumShorts, i.e. the number of deltas in ItemVariationData’s delta sets that use a 16-bit representation (b2825ff).

3.8.0 (released 2017-03-05)

• New pens: MomentsPen, StatisticsPen, RecordingPen, and TeePen.

• [misc] Added new fontTools.misc.symfont module, for symbolic font statistical analysis; requires sympy (http://www.sympy.org/en/index.html)

• [varLib] Added experimental fontTools.varLib.interpolatable module for finding wrong contour order between different masters

• [varLib] designspace.load() now returns a dictionary, instead of a tuple, and supports <axes> element (#864); the ‘masters’ item was renamed ‘sources’, like the <sources> element in the designspace document

• [ttLib] Fixed issue with recalculating head modified timestamp when saving CFF fonts

• [ttLib] In TupleVariation, round deltas before compiling (#861, fixed #592)

• [feaLib] Ignore duplicate glyphs in classes used as MarkFilteringSet and MarkAttachmentType (#863)

• [merge] Changed the gasp table merge logic so that only the one from the first font is retained, similar to other hinting tables (#862)

• [Tests] Added tests for the varLib package, as well as test fonts from the “Annotated OpenType Specification” (AOTS) to exercise ttLib’s table readers/writers (<https://github.com/adobe-type-tools/aots>)

3.7.2 (released 2017-02-17)

• [subset] Keep advance widths when stripping “.notdef” glyph outline in CID-keyed CFF fonts (#845)

• [feaLib] Zero values now produce the same results as makeotf (#633, #848)

• [feaLib] More compact encoding for “Contextual positioning with in-line single positioning rules” (#514)

3.7.1 (released 2017-02-15)

• [subset] Fixed issue with --no-hinting option whereby advance widths in Type 2 charstrings were also being stripped (#709, #343)

• [feaLib] include statements now resolve relative paths like makeotf (#838)

• [feaLib] table name now handles Unicode codepoints beyond the Basic Multilingual Plane, also supports old-style MacOS platform encodings (#842)

• [feaLib] correctly escape string literals when emitting feature syntax (#780)

3.7.0 (released 2017-02-11)

• [ttx, mtiLib] Preserve ordering of glyph alternates in GSUB type 3 (#833).

• [feaLib] Glyph names can have dashes, as per new AFDKO syntax v1.20 (#559).

• [feaLib] feaLib.Parser now needs the font’s glyph map for parsing.

• [varLib] Fix regression where GPOS values were stored as 0.

• [varLib] Allow merging of class-based kerning when ClassDefs are different

3.6.3 (released 2017-02-06)

• [varLib] Fix building variation of PairPosFormat2 (b5c34ce).

• Populate defaults even for otTables that have postRead (e45297b).

• Fix compiling of MultipleSubstFormat1 with zero ‘out’ glyphs (b887860).

3.6.2 (released 2017-01-30)

• [varLib.merger] Fixed “TypeError: reduce() of empty sequence with no initial value” (3717dc6).

3.6.1 (released 2017-01-28)

• [py23] Fixed unhandled exception occurring at interpreter shutdown in the “last resort” logging handler (972b3e6).

• [agl] Ensure all glyph names are of native ‘str’ type; avoid mixing ‘str’ and ‘unicode’ in TTFont.glyphOrder (d8c4058).

• Fixed inconsistent title levels in README.rst that caused PyPI to incorrectly render the reStructuredText page.

3.6.0 (released 2017-01-26)

• [varLib] Refactored and improved the variation-font-building process.

• Assembly code in the fpgm, prep, and glyf tables is now indented in XML output for improved readability. The instruction element is written as a simple tag if empty (#819).

• [ttx] Fixed ‘I/O operation on closed file’ error when dumping multiple TTXs to standard output with the ‘-o -’ option.

• The unit test modules (*_test.py) have been moved outside of the fontTools package to the Tests folder, thus they are no longer installed (#811).

3.5.0 (released 2017-01-14)

• Font tables read from XML can now be written back to XML with no loss.

• GSUB/GPOS LookupType is written out in XML as an element, not comment. (#792)

• When parsing cmap table, do not store items mapped to glyph id 0. (#790)

• [otlLib] Make ClassDef sorting deterministic. Fixes #766 (7d1ddb2)

• [mtiLib] Added unit tests (#787)

• [cvar] Implemented cvar table

• [gvar] Renamed GlyphVariation to TupleVariation to match OpenType terminology.

• [otTables] Handle gracefully empty VarData.Item array when compiling XML. (#797)

• [varLib] Re-enabled generation of HVAR table for fonts with TrueType outlines; removed --build-HVAR command-line option.

• [feaLib] The parser can now be extended to support non-standard statements in FEA code by using a customized Abstract Syntax Tree. See, for example, feaLib.builder_test.test_extensions and baseClass.feax (#794, fixes #773).

• [feaLib] Added feaLib command to the ‘fonttools’ command-line tool; applies a feature file to a font. fonttools feaLib -h for help.

• [pens] The T2CharStringPen now takes an optional roundTolerance argument to control the rounding of coordinates (#804, fixes #769).

• [ci] Measure test coverage on all supported python versions and OSes, combine coverage data and upload to https://codecov.io/gh/fonttools/fonttools (#786)

• [ci] Configured Travis and Appveyor for running tests on Python 3.6 (#785, 55c03bc)

• The manual pages installation directory can be customized through FONTTOOLS_MANPATH environment variable (#799, fixes #84).

• [Snippets] Added otf2ttf.py, for converting fonts from CFF to TrueType using the googlei18n/cu2qu module (#802)

3.4.0 (released 2016-12-21)

• [feaLib] Added support for generating FEA text from abstract syntax tree (AST) objects (#776). Thanks @mhosken

• Added agl.toUnicode function to convert AGL-compliant glyph names to Unicode strings (#774)

• Implemented MVAR table (b4d5381)

3.3.1 (released 2016-12-15)

• [setup] We no longer use versioneer.py to compute fonttools version from git metadata, as this has caused issues for some users (#767). Now we bump the version strings manually with a custom release command of setup.py script.

3.3.0 (released 2016-12-06)

• [ttLib] Implemented STAT table from OpenType 1.8 (#758)

• [cffLib] Fixed decompilation of CFF fonts containing non-standard key/value pairs in FontDict (issue #740; PR #744)

• [py23] minor: in round3 function, allow the second argument to be None (#757)

• The standalone sstruct and xmlWriter modules, deprecated since vesion 3.2.0, have been removed. They can be imported from the fontTools.misc package.

3.2.3 (released 2016-12-02)

• [py23] optimized performance of round3 function; added backport for py35 math.isclose() (9d8dacb)

• [subset] fixed issue with ‘narrow’ (UCS-2) Python 2 builds and --text/--text-file options containing non-BMP chararcters (16d0e5e)

• [varLib] fixed issuewhen normalizing location values (8fa2ee1, #749)

• [inspect] Made it compatible with both python2 and python3 (167ee60, #748). Thanks @pnemade

3.2.2 (released 2016-11-24)

• [varLib] Do not emit null axes in fvar (1bebcec). Thanks @robmck-ms

• [varLib] Handle fonts without GPOS (7915a45)

• [merge] Ignore LangSys if None (a11bc56)

• [subset] Fix subsetting MathVariants (78d3cbe)

• [OS/2] Fix “Private Use (plane 15)” range (08a0d55). Thanks @mashabow

3.2.1 (released 2016-11-03)

• [OS/2] fix checking fsSelection bits matching head.macStyle bits

• [varLib] added --build-HVAR option to generate HVAR table for fonts with TrueType outlines. For CFF2, it is enabled by default.

3.2.0 (released 2016-11-02)

• [varLib] Improve support for OpenType 1.8 Variable Fonts:

• Implement GDEF’s VariationStore

• Implement HVAR/VVAR tables

• Partial support for loading MutatorMath .designspace files with varLib.designspace module

• Add varLib.models with Variation fonts interpolation models

• Implement GSUB/GPOS FeatureVariations

• Initial support for interpolating and merging OpenType Layout tables (see varLib.interpolate_layout and varLib.merger modules)

• [API change] Change version to be an integer instead of a float in XML output for GSUB, GPOS, GDEF, MATH, BASE, JSTF, HVAR, VVAR, feat, hhea and vhea tables. Scripts that set the Version for those to 1.0 or other float values also need fixing. A warning is emitted when code or XML needs fix.

• several bug fixes to the cffLib module, contributed by Adobe’s @readroberts

• The XML output for CFF table now has a ‘major’ and ‘minor’ elements for specifying whether it’s version 1.0 or 2.0 (support for CFF2 is coming soon)

• [setup.py] remove undocumented/deprecated extra_path Distutils argument. This means that we no longer create a “FontTools” subfolder in site-packages containing the actual fontTools package, as well as the standalone xmlWriter and sstruct modules. The latter modules are also deprecated, and scheduled for removal in upcoming releases. Please change your import statements to point to from fontTools.misc import xmlWriter and from fontTools.misc import sstruct.

• [scripts] Add a ‘fonttools’ command-line tool that simply runs fontTools.* sub-modules: e.g. fonttools ttx, fonttools subset, etc.

• [hmtx/vmts] Read advance width/heights as unsigned short (uint16); automatically round float values to integers.

• [ttLib/xmlWriter] add ‘newlinestr=None’ keyword argument to TTFont.saveXML for overriding os-specific line endings (passed on to XMLWriter instances).

• [versioning] Use versioneer instead of setuptools_scm to dynamically load version info from a git checkout at import time.

• [feaLib] Support backslash-prefixed glyph names.

3.1.2 (released 2016-09-27)

• restore Makefile as an alternative way to build/check/install

• README.md: update instructions for installing package from source, and for running test suite

• NEWS: Change log was out of sync with tagged release

3.1.1 (released 2016-09-27)

• Fix ttLibVersion attribute in TTX files still showing ‘3.0’ instead of ‘3.1’.

• Use setuptools_scm to manage package versions.

3.1.0 (released 2016-09-26)

• [feaLib] New library to parse and compile Adobe FDK OpenType Feature files.

• [mtiLib] New library to parse and compile Monotype ‘FontDame’ OpenType Layout Tables files.

• [voltLib] New library to parse Microsoft VOLT project files.

• [otlLib] New library to work with OpenType Layout tables.

• [varLib] New library to work with OpenType Font Variations.

• [pens] Add ttGlyphPen to draw to TrueType glyphs, and t2CharStringPen to draw to Type 2 Charstrings (CFF); add areaPen and perimeterPen.

• [ttLib.tables] Implement ‘meta’ and ‘trak’ tables.

• [ttx] Add –flavor option for compiling to ‘woff’ or ‘woff2’; add --with-zopfli option to use Zopfli to compress WOFF 1.0 fonts.

• [subset] Support subsetting ‘COLR’/’CPAL’ and ‘CBDT’/’CBLC’ color fonts tables, and ‘gvar’ table for variation fonts.

• [Snippets] Add symfont.py, for symbolic font statistics analysis; interpolatable.py, a preliminary script for detecting interpolation errors; {merge,dump}_woff_metadata.py.

• [classifyTools] Helpers to classify things into classes.

• [CI] Run tests on Windows, Linux and macOS using Appveyor and Travis CI; check unit test coverage with Coverage.py/Coveralls; automatic deployment to PyPI on tags.

• [loggingTools] Use Python built-in logging module to print messages.

• [py23] Make round() behave like Python 3 built-in round(); define round2() and round3().

3.0 (released 2015-09-01)

• Add Snippet scripts for cmap subtable format conversion, printing GSUB/GPOS features, building a GX font from two masters

• TTX WOFF2 support and a -f option to overwrite output file(s)

• Support GX tables: avar, gvar, fvar, meta

• Support feat and gzip-compressed SVG tables

• Upgrade Mac East Asian encodings to native implementation if available

• Add Roman Croatian and Romanian encodings, codecs for mac-extended East Asian encodings

• Implement optimal GLYF glyph outline packing; disabled by default

2.5 (released 2014-09-24)

• Add a Qt pen

• Add VDMX table converter

• Load all OpenType sub-structures lazily

• Add support for cmap format 13.

• Add pyftmerge tool

• Update to Unicode 6.3.0d3

• Add pyftinspect tool

• Add support for Google CBLC/CBDT color bitmaps, standard EBLC/EBDT embedded bitmaps, and SVG table (thanks to Read Roberts at Adobe)

• Add support for loading, saving and ttx’ing WOFF file format

• Add support for Microsoft COLR/CPAL layered color glyphs

• Support PyPy

• Support Jython, by replacing numpy with array/lists modules and removed it, pure-Python StringIO, not cStringIO

• Add pyftsubset and Subsetter object, supporting CFF and TTF

• Add to ttx args for -q for quiet mode, -z to choose a bitmap dump format

2.4 (released 2013-06-22)

• Option to write to arbitrary files

• Better dump format for DSIG

• Better detection of OTF XML

• Fix issue with Apple’s kern table format

• Fix mangling of TT glyph programs

• Fix issues related to mona.ttf

• Fix Windows Installer instructions

• Fix some modern MacOS issues

• Fix minor issues and typos

2.3 (released 2009-11-08)

• TrueType Collection (TTC) support

• Python 2.6 support

• Update Unicode data to 5.2.0

• Couple of bug fixes

2.2 (released 2008-05-18)

• ClearType support

• cmap format 1 support

• PFA font support

• Switched from Numeric to numpy

• Update Unicode data to 5.1.0

• Update AGLFN data to 1.6

• Many bug fixes

2.1 (released 2008-01-28)

• Many years worth of fixes and features

2.0b2 (released 2002-??-??)

• Be “forgiving” when interpreting the maxp table version field: interpret any value as 1.0 if it’s not 0.5. Fixes dumping of these GPL fonts: http://www.freebsd.org/cgi/pds.cgi?ports/chinese/wangttf

• Fixed ttx -l: it turned out this part of the code didn’t work with Python 2.2.1 and earlier. My bad to do most of my testing with a different version than I shipped TTX with :-(

• Fixed bug in ClassDef format 1 subtable (Andreas Seidel bumped into this one).

2.0b1 (released 2002-09-10)

• Fixed embarrassing bug: the master checksum in the head table is now calculated correctly even on little-endian platforms (such as Intel).

• Made the cmap format 4 compiler smarter: the binary data it creates is now more or less as compact as possible. TTX now makes more compact data than in any shipping font I’ve tested it with.

• Dump glyph names as a separate “GlyphOrder” pseudo table as opposed to as part of the glyf table (obviously needed for CFF-OTF’s).

• Added proper support for the CFF table.

• Don’t barf on empty tables (questionable, but “there are font out there…”)

• When writing TT glyf data, align glyphs on 4-byte boundaries. This seems to be the current recommendation by MS. Also: don’t barf on fonts which are already 4-byte aligned.

• Windows installer contributed bu Adam Twardoch! Yay!

• Changed the command line interface again, now by creating one new tool replacing the old ones: ttx It dumps and compiles, depending on input file types. The options have changed somewhat.

• The -d option is back (output dir)

• ttcompile’s -i options is now called -m (as in “merge”), to avoid clash with dump’s -i.

• The -s option (“split tables”) no longer creates a directory, but instead outputs a small .ttx file containing references to the individual table files. This is not a true link, it’s a simple file name, and the referenced file should be in the same directory so ttcompile can find them.

• compile no longer accepts a directory as input argument. Instead it can parse the new “mini-ttx” format as output by “ttx -s”.

• all arguments are input files

• Renamed the command line programs and moved them to the Tools subdirectory. They are now installed by the setup.py install script.

• Added OpenType support. BASE, GDEF, GPOS, GSUB and JSTF are (almost) fully supported. The XML output is not yet final, as I’m still considering to output certain subtables in a more human-friendly manner.

• Fixed ‘kern’ table to correctly accept subtables it doesn’t know about, as well as interpreting Apple’s definition of the ‘kern’ table headers correctly.

• Fixed bug where glyphnames were not calculated from ‘cmap’ if it was (one of the) first tables to be decompiled. More specifically: it cmap was the first to ask for a glyphID -> glyphName mapping.

• Switched XML parsers: use expat instead of xmlproc. Should be faster.

• Removed my UnicodeString object: I now require Python 2.0 or up, which has unicode support built in.

• Removed assert in glyf table: redundant data at the end of the table is now ignored instead of raising an error. Should become a warning.

• Fixed bug in hmtx/vmtx code that only occured if all advances were equal.

• Fixed subtle bug in TT instruction disassembler.

• Couple of fixes to the ‘post’ table.

• Updated OS/2 table to latest spec.

1.0b1 (released 2001-08-10)

• Reorganized the command line interface for ttDump.py and ttCompile.py, they now behave more like “normal” command line tool, in that they accept multiple input files for batch processing.

• ttDump.py and ttCompile.py don’t silently override files anymore, but ask before doing so. Can be overridden by -f.

• Added -d option to both ttDump.py and ttCompile.py.

• Installation is now done with distutils. (Needs work for environments without compilers.)

• Updated installation instructions.

• Added some workarounds so as to handle certain buggy fonts more gracefully.

• Updated Unicode table to Unicode 3.0 (Thanks Antoine!)

• Included a Python script by Adam Twardoch that adds some useful stuff to the Windows registry.

• Moved the project to SourceForge.

1.0a6 (released 2000-03-15)

• Big reorganization: made ttLib a subpackage of the new fontTools package, changed several module names. Called the entire suite “FontTools”

• Added several submodules to fontTools, some new, some older.

• Added experimental CFF/GPOS/GSUB support to ttLib, read-only (but XML dumping of GPOS/GSUB is for now disabled)

• Fixed hdmx endian bug

• Added -b option to ttCompile.py, it disables recalculation of bounding boxes, as requested by Werner Lemberg.

• Renamed tt2xml.pt to ttDump.py and xml2tt.py to ttCompile.py

• Use “.ttx” as file extension instead of “.xml”.

• TTX is now the name of the XML-based format for TT fonts, and not just an application.

1.0a5

Never released

• More tables supported: hdmx, vhea, vmtx

1.0a3 & 1.0a4

Never released

• fixed most portability issues

• retracted the “Euro_or_currency” change from 1.0a2: it was nonsense!

1.0a2 (released 1999-05-02)

• binary release for MacOS

• genenates full FOND resources: including width table, PS font name info and kern table if applicable.

• added cmap format 4 support. Extra: dumps Unicode char names as XML comments!

• added cmap format 6 support

• now accepts true type files starting with “true” (instead of just 0x00010000 and “OTTO”)

• ‘glyf’ table support is now complete: I added support for composite scale, xy-scale and two-by-two for the ‘glyf’ table. For now, component offset scale behaviour defaults to Apple-style. This only affects the (re)calculation of the glyph bounding box.

• changed “Euro” to “Euro_or_currency” in the Standard Apple Glyph order list, since we cannot tell from the ‘post’ table which is meant. I should probably doublecheck with a Unicode encoding if available. (This does not affect the output!)

Fixed bugs: - ‘hhea’ table is now recalculated correctly - fixed wrong assumption about sfnt resource names

1.0a1 (released 1999-04-27)

• initial binary release for MacOS