exit upon first error?

exit upon first error?

[David Fang]

Hi,
	Is there a way to force guile to exit upon first error (uncaught
dynwind), analogous to "sh -e"?  Though this isn't something one would
want interactively, it might be useful for non-interactive scripts to bail
out as soon as something goes wrong, rather than continue generating
errors.  Thanks in advance.

Fang




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Re: exit upon first error?

[Ludovic Courtès]

Hi,

David Fang <fang@csl.cornell.edu> writes:

> 	Is there a way to force guile to exit upon first error (uncaught
> dynwind), analogous to "sh -e"?  Though this isn't something one would
> want interactively, it might be useful for non-interactive scripts to bail
> out as soon as something goes wrong, rather than continue generating
> errors.  Thanks in advance.

AFAIK, the only way to achieve this is by calling `exit':

  $ guile -c '(exit (begin #f))' ; echo $?
  1

It converts `#f' to a non-zero exit value and anything else to zero.

Hope this helps,
Ludovic.


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Re: exit upon first error?

[Ludovic Courtès]

ludovic.courtes@laas.fr (Ludovic Courtès) writes:

> David Fang <fang@csl.cornell.edu> writes:
>
>> 	Is there a way to force guile to exit upon first error (uncaught
>> dynwind), analogous to "sh -e"?  Though this isn't something one would
>> want interactively, it might be useful for non-interactive scripts to bail
>> out as soon as something goes wrong, rather than continue generating
>> errors.  Thanks in advance.
>
> AFAIK, the only way to achieve this is by calling `exit':

And yes, you have to enclose your code in `dynamic-wind' or `catch'.

Thanks,
Ludovic.


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