Dash working

[Sebastiano Vigna]

You can now search for #, of course escaped as \#. E.g., \#UP searches  
for #UP. This means also that # is no longer special, so if the text  
contains A#B you cannot find it searching for A or for B--A#B is now a  
token.

Let me know if this seems to work and if you'd like other non- 
alphabetical characters to be considered word constituents..

Ciao,

                                seba