Re: saving and restoring the error stack trace

[Neil Jerram]

<address@hidden> writes:

> ---- Neil Jerram <address@hidden> wrote: 
>
>> 5.21.2 Debugging when an error occurs
>
>    ...
>
> Thank you, thank you!  This bit of documentation has been sorely
> needed for a long time.

That's true.  Over the last few years it's a question that has been
regularly asked on the mailing lists, and never quite definitively
answered.

>  Many people come to Guile from the "C side"
> with poor or nonexistant Scheme experience.  Usually to add Guile to
> some C application, which of course throws out the REPL and it's
> backtracing and error reporting capabilities.  So then when errors
> happen you have no idea where or how.  Making a C program extended
> by Guile spit out a proper backtrace is a twisty maze of handlers
> and catchers, and some of them need to be lazy.  (Lazy? Why would I
> want a *lazy* handler, I want a hard-working, full-featured kind of
> handler, not some wimpy light weight *lazy* handler!)

:-)

> My point is that getting good backtraces from C is non-obvious and a
> huge hindrance to people just learning how to use Guile and Scheme.
> But that's over now.  Thanks again Neil.

Thanks for your kind words.

Regards,
     Neil