Dollar in identifiers

I'm  not sure if it's according to or violating the standard.   But most other databases allow a '$' inside  of
identifiers.  Well,  most  of  them recommend not to use it, but hey guy's,   what's a recommendation for a
programmer?
   In order to lower porting issues, I think it'd be nice to add   that  to  PostgreSQL  as  well.  It's  two more
charactersin   scan.l and doesn't break the regression test.
 
   Objections?


Jan

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