On Nov 3, Martin Karlsson said: >Could anyone give me a push in the right direction, please? >How do I write a regexp that matches double instances of letters (in a >file i read into a variable), e.g. aa LL pp etc. ? > >Is there an easy way, or must I use > (aa|bb|cc|... and so on ) ?
You want to use a backreference: if ($string =~ /([a-zA-Z])\1/) { # $1 is the character that was doubled } -- Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/ RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/ ** Look for "Regular Expressions in Perl" published by Manning, in 2002 ** -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]