Thanks, izut!

Changed my code to the following and it works: 

$message =~ s~\[size=(.+?)\](.+?)\[/size\]~($1 > 5) ? "<font size=\"5\
+">$2</font>" : "<font size=\"$1\">$2</font>"~eisg;

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In reply to Re^2: Ternary inside a regex by kiat
in thread Ternary inside a regex by kiat

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