I updated an answer to How to make a Perl regex and references part of the matching string in the regex and added a URL x-ref to the section of the Perl manual.
The URL works when it is spelled:
It does not work when spelled:
When I entered it, I included the parentheses; SO replaced parentheses with
%29. I'm not happy about that since it has broken a working URL (though I'm not entirely clear why it doesn't work as mapped).
Chrome vs Firefox (and the rest)?
In the light of the comments that "it works for me", I observe that I'm using Chrome 32.0.1700.41 beta on Mac OS X 10.9 Mavericks, and that did not jump to the correct section with the
%28...%29 URL. I also get the same not-working effect with Chrome 31.0.1650.57 on an Ubuntu 12.04 derivative system. The problem is probably in Chrome, therefore. When I try Firefox 25.0.1 on Mac OS X, it works fine with the
%28...%29 URL; so does the the same version number of Firefox on the Ubuntu system. I'll report an issue to Chrome developers.
The residual question is whether SO should adapt to a Chrome defect.