>> Note the 'if not a number' part – you could also use `"foo"` instead >> of `##f` to get the same effect. > > "foo" does not match the type `number?`. Note that values `'()` and > `#f` are always allowed for properties. > > `"foo"` is not.
Thanks for the correction. I only looked at line 64 in file
`self-alignment-interface.cc` and didn't check the prerequisite.
Werner
