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[Bug 1850] [F&O] how do ranges work in case-insensitive mode?

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Date: Thu, 15 Sep 2005 09:50:58 +0000
To: public-qt-comments@w3.org
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Message-Id: <E1EFqOQ-0006uS-GH@wiggum.w3.org>

http://www.w3.org/Bugs/Public/show_bug.cgi?id=1850





------- Additional Comments From davidc@nag.co.uk  2005-09-15 09:50 -------
> So this leads to the revised proposal as follows:

This works for me.

Only comment is that every character is a case variant of itself, so your rules
1 and 3 can be compressed to

1. When a normal character (Char) is used as an atom, it represents the set
of case-variants of that character. For example, the regular
expression "z" expands to "[zZ]".


3. A back-reference is compared using case-blind comparison: that is, each
character must be a case-variant of the corresponding character of the
previously matched string. For
example, the strings "Mum", "mom", "Dad", and "DUD" all match the regular
expression "([md])[aeiou]\1" when the "i" flag is used.



I started to write this comment thinking that the re-write would make things
clearer, highlighting that the characters are treated uniformly and there aren't
really two cases here. However having done it perhaps it relies too much on the
definition and the bit of extra redundancy in your wording is clearer, leave it
to the editors to judge...
Received on Thursday, 15 September 2005 09:51:36 UTC

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