fix bugzilla issue 7141

[ghost]

http://d.puremagic.com/issues/show_bug.cgi?id=7141

[DmitryOlshansky]

Looks like I missed a lot, real life has it's downsides :(
After unfortunate illness intermixed with university affairs I've been off for a couple of months. As such I wasn't tuned on bugzila/groups etc. at the time. Fortunately I noticed the paths in the merge notification, issue 7141 isn't exactly descriptive.

The fix puzzles me a bit, it pinpoints the root of the problem but I'd rather do it in less intrusive way.Adding 2 extra states for parser is an overkill, as it was already a messy place.
The problem with this commit is that I think it sides-steps some range magic e.g. this test now fails:
unittest{
string pattern2 = [&-z];
bool m = !match("b",pattern2).empty;
assert(m);
}
It's late here, I'm following on this one tomorrow.

[andralex]

I figured you'd be busy with studies, sorry to hear you've been sick too. Great to hear your'e better, and Happy New Year.

Feel free to implement a simpler fix in a future pull request. More importantly, it would be great to discuss starting on the EBNF parser we discussed a while ago. That's a very exciting and high-profile project!

[andralex]

Oh, and GSOC 2012 is upon us. We need to work on applications.