RFC: Supporting quoted symbol/label names

[Nick Clifton]

Hi Jan,

> Of course (not having looked at the patch in any detail) one question
> is how you (want to) deal with non-printable characters (potentially
> encode-able via backslash escapes),

The patch currently does not support escape sequences, except for an 
escaped double quote.  Perhaps it should.

> since some are being used by
> gas internally (on the assumption that user provided symbol names
> can't contain them).

Currently only two values are used by gas internally - 0x1 and 0x2. 
Assuming that escape sequences were enabled we could add a check and 
complain if either of these values were used.  Or just allow them and 
warn the user that they really need to know what they are doing.

Cheers
   Nick