Move _kwargsEval to ufo2ft.util

Lib/ufo2ft/featureWriters/__init__.py

@@ -2,6 +2,8 @@
 import re
 from inspect import isclass
 
+from ufo2ft.util import _kwargsEval
+
 from .baseFeatureWriter import BaseFeatureWriter
 from .kernFeatureWriter import KernFeatureWriter
 from .markFeatureWriter import MarkFeatureWriter
@@ -95,18 +97,6 @@ def loadFeatureWriters(ufo, ignoreErrors=True):
     return writers
 
 
-# NOTE about the security risk involved in using eval: the function below is
-# meant to be used to parse string coming from the command-line, which is
-# inherently "trusted"; if that weren't the case, a potential attacker
-# could do worse things than segfaulting the Python interpreter...
-
-
-def _kwargsEval(s):
-    return eval(
-        "dict(%s)" % s, {"__builtins__": {"True": True, "False": False, "dict": dict}}
-    )
-
-
 _featureWriterSpecRE = re.compile(
     r"(?:([\w\.]+)::)?"  # MODULE_NAME + '::'
     r"(\w+)"  # CLASS_NAME [required]

Lib/ufo2ft/filters/__init__.py

@@ -4,7 +4,7 @@
 from inspect import getfullargspec, isclass
 
 from ufo2ft.constants import FILTERS_KEY as UFO2FT_FILTERS_KEY  # keep previous name
-from ufo2ft.featureWriters import _kwargsEval
+from ufo2ft.util import _kwargsEval
 
 from .base import BaseFilter
 from .cubicToQuadratic import CubicToQuadraticFilter

Lib/ufo2ft/util.py

@@ -419,3 +419,15 @@ def _getDefaultNotdefGlyph(designSpaceDoc):
         except KeyError:
             notdefGlyph = None
     return notdefGlyph
+
+
+# NOTE about the security risk involved in using eval: the function below is
+# meant to be used to parse string coming from the command-line, which is
+# inherently "trusted"; if that weren't the case, a potential attacker
+# could do worse things than segfaulting the Python interpreter...
+
+
+def _kwargsEval(s):
+    return eval(
+        "dict(%s)" % s, {"__builtins__": {"True": True, "False": False, "dict": dict}}
+    )