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Yesterday Patrick Michaud posted "PGE features update (corrections)"
which describes the results you've got:
* Match objects for nested captures are nested into the surrounding
capture object. Thus, given
rulesub = p6rule(":w (let) ( (\w+) \:= (\S+) )")
match = rulesub("let foo := 123")
the outer match object contains two match objects ($/[0] and $/[1]),
and the second of these contains two match objects at
$/[1][0] and $/[1][1].
print match # outputs "let foo := 123"
$P0 = match[0] # first subcapture ($1)
print $P0 # outputs "let"
$P0 = match[1] # second subcapture ($2)
$P1 = $P0[0] # first nested capture ($2[0])
print $P1 # outputs "foo"
$P1 = $P0[1] # second nested capture ($2[1])
print $P1 # outputs "123"
Cheers,
Carl
