Parser lookaheads are implemented in terms of tokens, not characters. The first token of yada is a triple-dot, not a dot. While you may think it starts with a dot, that's not how the parser sees it, so the existence of yada is not relevant here.

In reply to Re^12: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff by ikegami
in thread What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff by likbez

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