Functions should not have a space before the opening parenthesis. So
change output like
alpha (@color, 0.5)
to
alpha(@color, 0.5)
and do the same for "shade" and "mix".
Tests have been updated accordingly.
And update/fix it for the new shorthand parsing, since the old test did
a couple of things wrong:
- it erroneously flipped background-clip and background-origin when
testing
- it was missing default initial values for background-size and
background-position from the generated test output