[Bug 5348] [FO] Back-references: "sufficiently many"

https://www.w3.org/Bugs/Public/show_bug.cgi?id=5348

Abel Braaksma <abel.braaksma@xs4all.nl> changed:

           What    |Removed                     |Added
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                 CC|                            |abel.braaksma@xs4all.nl

--- Comment #8 from Abel Braaksma <abel.braaksma@xs4all.nl> ---
> The problem with making \11 illegal in the scenario mentioned is that you 
> can't express \1 followed by the literal "1".
Actually, you can: "(?:\1)1" does exactly that and is the recommended way
explained in "Mastering Regular Expressions" by Friedl, to remove the
ambiguity.

PS: this is no intend to reopen the bug, I just stumbled upon this while
working on test case fn-matches-38, which was written in reference to this bug.

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Received on Thursday, 4 February 2016 01:06:50 UTC