Re: more debugging info needed.

[Neil Jerram]

Paul Emsley <address@hidden> writes:

> This is Greg's Home:
> http://home.gna.org/greg/

Thanks.

> I made some fixes that didn't make it into stable release, I get the
> fixed up Greg from here:
>
> http://www.ysbl.york.ac.uk/~emsley/software/extras/greg-2.0.0-pe.tar.gz

OK, so basically you want to modify each occurrence of the (catch ...)
pattern in ice-9/greg.scm:

- Before each (catch ...), add `(set! stack-saved? #f)'

- To each (catch ...) add a fourth parameter `lazy-handler-dispatch'

- In the handler code of each (catch ...), add something like
  `(display-backtrace (fluid-ref the-last-stack) (current-error-port)
  #f #f '())' to print out the back trace.

That's a bit messy because it reuses some of the boot-9.scm code which
is really intended for the Guile REPL.  To do something neater, you
could copy just the bits of lazy-handler-dispatch that you really
need.

Regards,
        Neil