Do you really need it to be a regex?

# $str defined elsewhere
print "Is alphabetical\n" 
    if( $str eq join '', sort split //, $str );

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----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

: () { :|:& };:

Note: All code is untested, unless otherwise stated

In reply to Re: Regexp for alphabetical order match within the string by hardburn
in thread Regexp for alphabetical order match within the string by prostoalex

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