... the order of the alternatives separated by | likely doesn't matter.

Further to Laurent_R's ++post: The ordered alternation "first match wins" behavior of Perl 5 can be seen here: 

c:\@Work\Perl\monks>perl -wMstrict -le
"my $s = 'xxxABCDEyyy';
 ;;
 print qq{captured '$1'} if $s =~ m{ (ABC|ABCD|ABCDE) }xms;
"
captured 'ABC'

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Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Is RegEx in Perl not NFA anymore? by AnomalousMonk
in thread Is RegEx in Perl not NFA anymore? by redbull2012

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