Regular Expressions - Refactoring HTML: Improving the Design of Existing Web Applications - page 302

"

#

%

'

,

/

:

;

<

=

>

@

_

`

~

Parentheses vary according to dialect. In some regular-expression dialects, parentheses match themselves, and
in some they don't. In jEdit, parentheses are metacharacters that do not match themselves.