From: Philippe Verdy (verdy_p@wanadoo.fr)
Date: Sat Oct 13 2007 - 13:35:29 CDT
In fact no, the proposed UTS update contains an interpretation of the
complement operation using the “(?! …)” operation which applies to such
extension of any regular expression (and it uses such a complex regular
expression containing alternations with general form “(?! … || … )” (and one
of the discussed case contains alternatives, part of the alternation, that
contain multiple characters, i.e. using the concatenation matcher, so
effectively it negates a complex RE which is an alternation of either
characters, or character classes, or concatenations of characters…)
Philippe.
_____
De : unicode-bounce@unicode.org [mailto:unicode-bounce@unicode.org] De la
part de Mark Davis
Envoyé : samedi 13 octobre 2007 19:29
À : Hans Aberg
Cc : Unicode
Objet : Re: FYI: Regex paper for UTC
The complement operation is only discussed in UTS #18 with regard to
character classes, not as a general operation. If you feel the text is
unclear on that point, perhaps you can look it over and suggest where it
could be enhanced. You can file this via the reporting form.
Mark
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