Re^2: Regex matching on grid alignment

Actually it needs branch-reset , which I remember from Finding repeat sequences., so like

m{
    (?|
        (.)\1\1(.)\1\1
        |(.)\1\1...
        |.(.)\1\1..
        |..(.)\1\1.
        |...(.)\1\1
    ){4} ## 6 x 4
}x;
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Generating (and testing) this regex left up to the OP (hopefully you can see the relation between the various numbers)

Comment on Re^2: Regex matching on grid alignment Download Code

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Re^3: Regex matching on grid alignment by Anonymous Monk on Sep 08, 2013 at 22:56 UTC
:) perl before 5.10 (before branch reset available ) would need () counting like (.)\1\1(.)\2\2 \|(.)\3\3... \|.(.)\4\4.. \|..(.)\5\5. \|...(.)\6\6	[reply]