tsearch2 keep throw-away characters

postgres=# select to_tsvector('default','I know how to code in C#, java and
C++');
to_tsvector
-------------------------------------
'c':7,10 'code':5 'java':8 'know':2
(1 row)

postgres=# select to_tsvector('simple','I know how to code in C#, java and
C++');
to_tsvector
-------------------------------------------------------------------------
'c':7,10 'i':1 'in':6 'to':4 'and':9 'how':3 'code':5 'java':8 'know':2
(1 row)

I'd like to get lexemes/tokens 'c#' and 'c++' out of this query. Everything
I can find has to do with stop words. How do I keep characters that
tsearch throws out? I've already tried 'c\#' and 'c\\#' etc, which don't
work.

Kimball