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[subset] Comments

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This commit is contained in:
Behdad Esfahbod 2013-12-06 21:42:36 -05:00
parent baa97d6f17
commit 9d2481bedf
1 changed files with 4 additions and 0 deletions
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4
Lib/fontTools/subset.py
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@ -1067,9 +1067,12 @@ def subset_feature_tags(self, feature_tags):
@_add_method(ttLib.getTableClass('GSUB'),
ttLib.getTableClass('GPOS'))
def prune_pre_subset(self, options):
# Drop undesired features
if '*' not in options.layout_features:
self.subset_feature_tags(options.layout_features)
# Drop unreferenced lookups
self.prune_lookups()
# Prune lookups themselves
if self.table.LookupList:
self.table.LookupList.prune_pre_subset(options);
return True
@ -1082,6 +1085,7 @@ def prune_post_subset(self, options):
table.ScriptList = None
if table.FeatureList and not table.FeatureList.FeatureRecord:
table.FeatureList = None
# Prune lookups themselves
if table.LookupList:
table.LookupList.prune_post_subset(options);
if not table.LookupList.Lookup: