[Bug 29415] [FO31] Regex: capturing parentheses inside non-capturing parentheses

https://www.w3.org/Bugs/Public/show_bug.cgi?id=29415

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #3 from Abel Braaksma <abel.braaksma@xs4all.nl> ---
This issue was fixed with a new text added to the spec, see:
https://lists.w3.org/Archives/Public/public-xsl-query/2016Feb/0017.html

However, this leaves one other location where the ambiguity is still in place,
i.e. in the section on back-references:

<quote>
A back-reference is an additional kind of atom. The construct \N where N is a
single digit is always recognized as a back-reference; if this is followed by
further digits, these digits are taken to be part of the back-reference if and
only if the resulting number NN is such that the back-reference is preceded by
NN or more unescaped opening parentheses.
</quote>

"NN or more unescaped opening parentheses" is too broad for the same reasons as
what originated this bug. 

I suggest to point here to the section above, something like "NN or more
opening [#LINK capturing parentheses]", where the link points to the section on
"Sub-expressions (groups)".

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Received on Tuesday, 9 February 2016 20:36:51 UTC