String handling in GDB command language variables

[Fyles, Matthew]

Just a quick question about the string handling capability of the GDB
command language.

set $test="mystring" does not work but defining a procedure and passing
a string in as an argument does, is there any further documentation
anywhere about the capabilities of the language other than the
information available in the user documentation.

Is this a feature that has been considered in the past and not
implemented or am I just not understanding the syntax for achieving
this.