[ nedit-Bugs-1760116 ] Negated escape sequences misinterpreted in character class

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Bugs item #1760116, was opened at 2007-07-25 09:45
Message generated for change (Comment added) made by ajbj
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Joerg Fischer (jf505)
Assigned to: Nobody/Anonymous (nobody)
Summary: Negated escape sequences misinterpreted in character class

Initial Comment:
The negated escape sequences \L, \S, \D, \W, ... are misinterpreted inside a character class. That is, [\S] matches \s, but it really should match the opposite.

(Perl does it right.)

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Comment By: Tony Balinski (ajbj)
Date: 2007-07-26 14:32

Message:
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I have a patch for this. It adds a few more character tables so that the
negated charset's characters can be added to the []-bracketed custom
charset, as is the case for the positive charset escapes.

Since I can't attach it here directly, you can find it here:
http://ajbj.free.fr/nedit/nedit5.5dev/patches/NegatedEscapesInClassesFix.diff

Interestingly, I notice that (?n\W) does not match newlines (my patch
allows (?n[\W]) to do so, which is rather inconsistent). This is true also
for \L, \D. Also \y without (?n ) around it will match newline. I believe
these to be faults. What about you?

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