A filter pen that passes outline data to another pen, but reversing
the winding direction of all contours.
Like ufoLib's ReverseContourPointPen, but using segment-wise pen
interface, without additional point/segment converters, and without
ufoLib.
627f997ddb/Lib/ufoLib/pointPen.py (L327-L406)
A filter pen that accumulates contour data, passes it through a
`filterContour` method as the contour is closed or ended, and
draws the result with the output pen.
For reproducible builds, check the presence of SOURCE_DATE_EPOCH
environment variable and use it for the time stamp. This affects the
head.modified (and head.created in merge.py).
See https://reproducible-builds.org/specs/source-date-epoch/
Instead of raising AssertionError when users define custom axes
without explicit `<labelname xml:lang="en">ZZZZ</labelname>` element,
it's better to use the axis' name attribute, and treat it as "en"
language.
For example, if users generate the designspace from SuperPolator,
they can't edit the axis labelname attribute from the UI (or maybe
it's just me that couldn't figure out how to do it).
Right now only merges DefaultLangSys. Also, does not remove unused Feature's after merge.
Moreover, does not merge kind Lookups of the same Feature.
But it works!
I added the id() trick because normal objects are not hashable in Python3.
Remove that hack and use a custom dict subclass that allows us to use
objects as keys as long as they don't change.
The custom dict has a different, desirable, property as well: upon seeing
keys it does not know, it just adds them to the end of the list. Will use
this feature in next commits to merge ScriptList properly.
It appears that cElementTree is still present as a deprecated alias in python 3
We tell coverage to skip this branch since it is not (currently) being hit
