rakudo :sigspace interpretation, [ |a] vs [a| ]

[Patrik Hägglund]

The following program works as I expect:

grammar g {
 rule TOP {[a| ]+}
 rule ws {<blank>+}
}
g.parse('a a');
say "'$/'";

gives me 'a a',

but changing [a| ] into [ |a] gives me

'a'

I suspect this is a problem in the rakudo implementation.

/Patrik Hägglund