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[varLib.featureVars] Fix region-merging code on Py3

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We should clean up all the various "convert dict to tuple" duplicated
code, but this fixes it for now.  doctest updated.

Fixes https://github.com/fonttools/fonttools/issues/1659
This commit is contained in:
Behdad Esfahbod 2019-07-09 16:14:01 -07:00
parent e1f0d1ae09
commit 84b9e9c387
1 changed files with 4 additions and 2 deletions
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6
Lib/fontTools/varLib/featureVars.py
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@ -71,7 +71,7 @@ def overlayFeatureVariations(conditionalSubstitutions):
and rules with the same Box merged. The more specific rules appear earlier
in the resulting list. Moreover, instead of just a dictionary of substitutions,
a list of dictionaries is returned for substitutions corresponding to each
uniq space, with each dictionary being identical to one of the input
unique space, with each dictionary being identical to one of the input
substitution dictionaries. These dictionaries are not merged to allow data
sharing when they are converted into font tables.
@ -79,6 +79,7 @@ def overlayFeatureVariations(conditionalSubstitutions):
>>> condSubst = [
... # A list of (Region, Substitution) tuples.
... ([{"wght": (0.5, 1.0)}], {"dollar": "dollar.rvrn"}),
... ([{"wght": (0.5, 1.0)}], {"dollar": "dollar.rvrn"}),
... ([{"wdth": (0.5, 1.0)}], {"cent": "cent.rvrn"}),
... ]
>>> from pprint import pprint
@ -107,7 +108,8 @@ def overlayFeatureVariations(conditionalSubstitutions):
# rules for the same region.
merged = OrderedDict()
for key,value in reversed(conditionalSubstitutions):
key = tuple(sorted(hashdict(cleanupBox(k)) for k in key))
key = tuple(sorted((hashdict(cleanupBox(k)) for k in key),
key=lambda d: tuple(sorted(d.items()))))
if key in merged:
merged[key].update(value)
else: