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glyphsLib fails to build UFOs from specific .glyphs file

See original GitHub issue

Get https://raw.githubusercontent.com/madig/cantarell-fonts/f17124d041e6ee370a9fcddcc084aa6cbf3d5500/src/Cantarell.glyphs
fontmake -g Cantarell.glyphs -o otf

INFO:fontmake.font_project:Building master UFOs and designspace from Glyphs source
INFO:glyphsLib.parser:Parsing .glyphs file
INFO:glyphsLib:Loading to UFOs
Traceback (most recent call last):
  File "/home/nikolaus/.local/bin/fontmake", line 11, in <module>
    sys.exit(main())
  File "/home/nikolaus/.local/lib/python3.6/site-packages/fontmake/__main__.py", line 183, in main
    project.run_from_glyphs(glyphs_path, **args)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/fontmake/font_project.py", line 376, in run_from_glyphs
    glyphs_path, family_name, mti_source=mti_source)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/fontTools/misc/loggingTools.py", line 372, in wrapper
    return func(*args, **kwds)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/fontmake/font_project.py", line 77, in build_master_ufos
    family_name=family_name)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/glyphsLib/__init__.py", line 81, in build_masters
    propagate_anchors=propagate_anchors)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/glyphsLib/__init__.py", line 59, in load_to_ufos
    propagate_anchors=propagate_anchors)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/glyphsLib/builder/__init__.py", line 43, in to_ufos
    result = list(builder.masters)
  File "/home/nikolaus/.local/lib/python3.6/site-packages/glyphsLib/builder/builders.py", line 137, in masters
    ufo_font = self._ufos[layer_id]
KeyError: ''

The same happens with

import glyphsLib
ufos = glyphsLib.build_instances('Cantarell.glyphs', "masters", "instances")

Issue Analytics

State:
Created 6 years ago
Comments:9 (3 by maintainers)

Top GitHub Comments

1reaction

MrBrezinacommented, Nov 13, 2017

I had the same problem. It is because I copied some glyphs from another font with more masters and the extra layers got preserved. It is not just layers without names, but also others which should not be there.

This Glyphs.app script helps to clean things up. (Run it multiple times. That’s because I am lazy to figure out how to delete all phantom layer systematically in one run.)

import GlyphsApp

font = Glyphs.font
real_layers = [m.id for m in font.masters]

for g in font.glyphs:
	for l in g.layers:
		if l.layerId not in real_layers:
			del(font.glyphs[g.name].layers[l.layerId])
			print "Deleting layer from", g.name

0reactions

anthrotypecommented, Dec 2, 2017

should be fixed by #291

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