Re^2: Nonrepeating characters in an RE

What you and I and, it seems, everyone else are missing is a clear understanding of BernieC's requirements.

What I understand (or imagine I understand) is that one must detect repetition only of a set of characters given in a "template" string. So if the template is 'abc', the string 'xxxabcxxx' has no repetition and the string 'aba' does. See Re^3: Nonrepeating characters in an RE (updated) and Re: Nonrepeating characters in an RE (updated) for my take on solutions to what I imagine BernieC's requirements to be.

Give a man a fish: <%-{-{-{-<

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Re^3: Nonrepeating characters in an RE by Anonymous Monk on Aug 17, 2022 at 14:18 UTC
Well, in that case... `my @test = qw/xyzabcxxx xyzaabxxx xyzabbxxx xyzabaxxx/; for (@test) { # only check for 'abc' say if not /([abc]).*?\1/; }` [download] Still quite simple, isn't it?	[reply] [d/l]
Re^4: Nonrepeating characters in an RE by LanX (Saint) on Aug 17, 2022 at 14:52 UTC
> Still quite simple, isn't it Yes and not new at all. Re^3: Nonrepeating characters in an RE (simple) And now try to include it into a larger regex where it only handles a small part. You can try to contact BernieC to find out how this substring is defined. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery}	[reply]
Re^5: Nonrepeating characters in an RE by AnomalousMonk (Archbishop) on Aug 17, 2022 at 15:29 UTC
... and not new, indeed: Re^3: Nonrepeating characters in an RE (updated) :) Give a man a fish: `<%-{-{-{-<`	[reply] [d/l]