Option for Bison like Flex's %option prefix

[Chris Verges]

I am writing a couple of parsers using Bison and Flex that have to be 
compiled into the same application.  This means the -P/-p options have 
been a God-send.  But I wanted to make it so that the user doesn't have 
to know how to pass in the -P and -p options to correctly generate the file.

Flex has an option that helps with this:

        %option prefix="my_custom_prefix_"

I have been searching for a similar option in Bison that I can place in 
the .y file header section, but cannot seem to find one.  So now I ask 
the Bison mailing list -- does this exist?!  (And if not, why not?  It's 
a *really* nice way to do things, including all of the command-line 
options in the actual .y file itself.)

Thank you for any help!

chris