This seems to work. 

$s = 'the_quick_brown_fox_jumps_over_the_lazy_dog';
$s =~ s[(.)([^_]*?)(?:_|$)][\U$1\E$2 ]g;
print $s;

The Quick Brown Fox Jumps Over The Lazy Dog

$s = 'fred';
$s =~ s[(.)([^_]*?)(?:_|$)][\U$1\E$2 ]g;
print $s;

Fred

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Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
Timing (and a little luck) are everything!

In reply to Re: split and capitalize regex by BrowserUk
in thread split and capitalize regex by arc_of_descent

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