Werner LEMBERG <[email protected]> writes: >>> Is there any LilyPond documentation explaining that it is possible >>> to switch off (set to ##f) the self-alignment-X property? >> >> Now it is :-) > > Actually, it was documented before, too, namely in the IR: > > ‘self-alignment-X’ (number): > Specify alignment of an object. The value ‘-1’ means left > aligned, ‘0’ centered, and ‘1’ right-aligned in X direction. > Other numerical values may also be specified - the unit is > half the object width. If not a number, align on the object’s > reference point. > > 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. -- David Kastrup
