Support pair positioning rules.

1 files changed, 6 insertions, 3 deletions

diff --git a/scripts/lib/fontbuild/features.py b/scripts/lib/fontbuild/features.py
index 1f59801..4e128a5 100755
--- a/scripts/lib/fontbuild/features.py
+++ b/scripts/lib/fontbuild/features.py
@@ -125,17 +125,20 @@ class FilterFeatureWriter(FDKSyntaxFeatureWriter):
             super(FilterFeatureWriter, self).gsubType4(target, replacement)

 

     def gposType1(self, target, value):

-        """Check a positioning rule."""

+        """Check a single positioning rule."""

         if self._checkRefs([target], self.posErr):

             super(FilterFeatureWriter, self).gposType1(target, value)

 

+    def gposType2(self, target, value, needEnum=False):

+        """Check a pair positioning rule."""

+        if self._checkRefs(target, self.posErr):

+            super(FilterFeatureWriter, self).gposType2(target, value, needEnum)

+

     # these rules may contain references, but they aren't present in Roboto

     def gsubType3(self, target, replacement):

         raise NotImplementedError

     def gsubType6(self, precedingContext, target, trailingContext, replacement):

         raise NotImplementedError

-    def gposType2(self, target, value):

-        raise NotImplementedError

 

     def feature(self, name):

         """Adds a feature definition only once."""