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[subset] delete empty SubrsIndex after subsetting

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Fixes https://github.com/fonttools/fonttools/issues/994
This commit is contained in:
Cosimo Lupo 2017-11-27 19:37:19 +00:00
parent e51293f3f0
commit 42d11cfd3e
1 changed files with 15 additions and 0 deletions
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15
Lib/fontTools/subset/__init__.py
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@ -2407,12 +2407,27 @@ def prune_post_subset(self, options):
for subr in subrs.items:
subr.subset_subroutines (local_subrs, font.GlobalSubrs)
# Delete local SubrsIndex if empty
if hasattr(font, 'FDSelect'):
for fd in font.FDArray:
_delete_empty_subrs(fd)
else:
_delete_empty_subrs(font)
# Cleanup
for subrs in all_subrs:
del subrs._used, subrs._old_bias, subrs._new_bias
return True
def _delete_empty_subrs(font):
if hasattr(font.Private, 'Subrs') and not font.Private.Subrs:
if 'Subrs' in font.Private.rawDict:
del font.Private.rawDict['Subrs']
delattr(font.Private, 'Subrs')
@_add_method(ttLib.getTableClass('cmap'))
def closure_glyphs(self, s):
tables = [t for t in self.tables if t.isUnicode()]