Wouldn't it be a smidgen better to use a negative char class and a + quantifier?

s{(<[^>]+>)}{
   (my $x = $1) =~ tr/ /_/;
   $x;
}eg;

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In reply to Re: replace all spaces within anglebrackets with underscores by danger
in thread replace all spaces within anglebrackets with underscores by merlyn

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