8 Aug
2011
8 Aug
'11
9:47 p.m.
#optional is a parser that always succeeds. #star is an parser that parsers 0 or more times eagerly. Thus #star loops forever.
Thanks, so "optional" is like the ? in other regex systems, meaning 0 or 1 times.
Yes, 'x?*' is illegal in most regex engines. I guess PetitParser could also try to prevent it, at least in simple cases.
Lukas
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Lukas Renggli
www.lukas-renggli.ch