Allow spaces in listPattern

[MSK1582]

This modifies the RegEx so that spaces can be placed in lists fixing #1835

[DenWav]

Thanks for the PR. Ideally this would be more robust rather than just accepting a comma-separated list, but that was the easy option at the time. I don't think I want to merge this as-is, but this gives me an idea of how I want to handle this in the short term.