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Assertion in compiling GPOS table built by feaLib

See original GitHub issue

I’m not sure if this is a feaLib bug, ttLib bug or a bug in my font. I’m getting this assertion error which I suspect is related to table splitting:

Parsing 'GlyphOrder' table...
Parsing 'head' table...
Parsing 'hhea' table...
Parsing 'maxp' table...
Parsing 'OS/2' table...
Parsing 'name' table...
Parsing 'cmap' table...
Parsing 'post' table...
Parsing 'CFF ' table...
Parsing 'BASE' table...
Parsing 'GDEF' table...
Parsing 'GPOS' table...
Parsing 'GSUB' table...
Parsing 'hmtx' table...
Attempting to fix OTLOffsetOverflowError ('GPOS', 'LookupIndex:', 11, 'SubTableIndex:', None, 'ItemName:', None, 'ItemIndex:', None)
Attempting to fix OTLOffsetOverflowError ('GPOS', 'LookupIndex:', 10, 'SubTableIndex:', 1, 'ItemName:', 'Coverage', 'ItemIndex:', None)
Attempting to fix OTLOffsetOverflowError ('GPOS', 'LookupIndex:', 10, 'SubTableIndex:', 1, 'ItemName:', 'Coverage', 'ItemIndex:', None)
Traceback (most recent call last):
  File "/fonttools/Lib/fontTools/ttx.py", line 383, in main
    process(jobs, options)
  File "/fonttools/Lib/fontTools/ttx.py", line 356, in process
    action(input, output, options)
  File "/fonttools/Lib/fontTools/misc/loggingTools.py", line 369, in wrapper
    return func(*args, **kwds)
  File "/fonttools/Lib/fontTools/ttx.py", line 277, in ttCompile
    ttf.save(output)
  File "/fonttools/Lib/fontTools/ttLib/__init__.py", line 216, in save
    self._writeTable(tag, writer, done)
  File "/fonttools/Lib/fontTools/ttLib/__init__.py", line 648, in _writeTable
    tabledata = self.getTableData(tag)
  File "/fonttools/Lib/fontTools/ttLib/__init__.py", line 659, in getTableData
    return self.tables[tag].compile(self)
  File "/fonttools/Lib/fontTools/ttLib/tables/otBase.py", line 90, in compile
    self.table.compile(writer, font)
  File "/fonttools/Lib/fontTools/ttLib/tables/otBase.py", line 660, in compile
    conv.write(writer, font, table, value)
  File "/fonttools/Lib/fontTools/ttLib/tables/otConverters.py", line 358, in write
    value.compile(subWriter, font)
  File "/fonttools/Lib/fontTools/ttLib/tables/otBase.py", line 635, in compile
    conv.write(writer, font, table, value, i)
  File "/fonttools/Lib/fontTools/ttLib/tables/otConverters.py", line 358, in write
    value.compile(subWriter, font)
  File "/fonttools/Lib/fontTools/ttLib/tables/otBase.py", line 635, in compile
    conv.write(writer, font, table, value, i)
  File "/fonttools/Lib/fontTools/ttLib/tables/otConverters.py", line 358, in write
    value.compile(subWriter, font)
  File "/fonttools/Lib/fontTools/ttLib/tables/otBase.py", line 618, in compile
    writer['LookupType'].setValue(self.__class__.LookupType)
  File "/fonttools/Lib/fontTools/ttLib/tables/otBase.py", line 514, in setValue
    assert table[name] == value, (name, table[name], value)
AssertionError: (('LookupType', 9, 2), 'PairPos[2]', 'Lookup[10]', 'LookupList')

When compiling the attached ttx file (which was created by from https://github.com/khaledhosny/mada. I had to save a ttx file since compiling directly was failing with the same assert). Mada-Light.ttx.zip

Issue Analytics

State:
Created 7 years ago
Comments:11 (8 by maintainers)

Top GitHub Comments

2reactions

behdadcommented, Jul 13, 2016

Ok, took a while to debug. But should be fixed. Please test and report. Thanks!

0reactions

anthrotypecommented, Jul 13, 2016

Thank you Behdad! It seems to be working now 👏

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