regular expressions with other string classes

[Juan Valiño]

It is possible to use the regular expression engine with other string-like
structures?.

For example, I can have my proper string class implemented as a list of
python strings. Of course, my class would have an operator for direct access
to a character by index. (I think nothing more is necessary).

I think that the new java sdk beta 1.4 includes such as regular expression
engine.