ly.dom.HandleVars does not handle non-string values

[chaosmonk1]

>>> import ly.dom
>>> document = ly.dom.Document()
>>> paper = ly.dom.Paper()
>>> paper['ragged-right'] = '##f'
>>> document.append(paper)
>>> printer = ly.dom.Printer()
>>> print(printer.indent(document))
\paper {
  ragged-right = "##f"
}

##f should not be in quotes, because it is a boolean rather than a string. Paper inherits HandleVars, which appears to produce a QuotedString, which for non-string values such booleans isn't correct. Perhaps a more appropriate behavior would be to accept Python booleans and produce Scheme booleans:

>>> paper['ragged-right'] = False
>>> document.append(paper)
>>> printer = ly.dom.Printer()
>>> print(printer.indent(document))
\paper {
  ragged-right = ##f
}

[chaosmonk1]

My current workaround is to add the assignment as a string,

>>> text = ly.dom.Text('ragged-right = ##f')
>>> paper.append(text)
>>> document.append(paper)
>>> printer = ly.dom.Printer()
>>> print(printer.indent(document))
\paper { ragged-right = ##f }

but it would be nice to be able to assign variables that take scheme values the same way as those that take string values.

[uliska]

I think you're right, and I also think assigning Python booleans would be the correct way to go. However, since I don't know how that might affect existing use(r)s I suggest to

• ensure that '##f' will correctly be interpreted as a boolean
• add the possibility to assign Python booleans