I think you may be being fooled by an error:
my $out = study_substitute($_) for each (@messages); #..................................^^^?^^^^
FWIW: I don't see any improvement (actually a 2% drop) in the performance of the study version (using 5.10/win).
In reply to Re^4: Speed Improvement
by BrowserUk
in thread Speed Improvement
by Nar
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