Change 1613
Make MATCH generate empty strings for () subexpressions that
match nothing, rather than generating nothing at all. The logic
that finds the count of () subexpressions was checking the
length of the match, rather than the presence of the match.
Thanks to David Abrahams.
match nothing, rather than generating nothing at all. The logic
that finds the count of () subexpressions was checking the
length of the match, rather than the presence of the match.
Thanks to David Abrahams.
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