gdb command to decode guile SCM words?

[Edward J. Huff]

Surely someone has written an interface from gdb into guile
so that gdb can print out scheme data structures?

If you google for gdb guile you find references to a plan to 
use scheme as a scripting language for gdb, and on the
http://www.gnu.org/software/guile/ideas.html
page you find


> GDB support for debugging Guile-using C code 
> 
> GDB actually has some Scheme support in there; we should teach it how
> to print Scheme values, how to print interpreter frames, and so on. 
> 
> This has been done in the past with a mixed GDB/Guile solution, but I
> think it would be more robust to actually put everything in GDB. 
> 
> Negotiate design with the GDB group, so it can be merged into Cygnus's
> sources. 
> 

Does anyone have a quick way to print out lists in gdb?  Right now
I'm looking at tags.h in the guile source and I can recognize
a heap address, an immediate string, and a few others, but it
is a pain.

--Ed Huff