condition-case with multiple handlers

condition-case with multiple handlers

[Jay Belanger]

I'm dealing with a condition-case construct that has more than one
handler and I need some way to indicate (outside the construct) when any
one of the errors has occurred.  I could, for example, set a flag in
each handler: 
  (some-error
     (setq flag t)
     ...some stuff ...)
  (another-error
     (setq flag t)
     ...different stuff...)
Is there a better way to do this?

Jay

RE: condition-case with multiple handlers

[Herring, Davis]

> I'm dealing with a condition-case construct that has more than one
> handler and I need some way to indicate (outside the construct) when any
> one of the errors has occurred.

How about:

(let (noerror)
  (condition-case ...
    (progn
      ...
      (setq noerror t))
    (some-error ...)
    (other-error ...))
  ...)

Davis

Re: condition-case with multiple handlers

[Jay Belanger]

"Herring, Davis" <herring@lanl.gov> writes:

>> I'm dealing with a condition-case construct that has more than one
>> handler and I need some way to indicate (outside the construct) when any
>> one of the errors has occurred.
>
> How about:
>
> (let (noerror)
>   (condition-case ...
>     (progn
>       ...
>       (setq noerror t))
>     (some-error ...)
>     (other-error ...))
>   ...)

Good idea, but it messes with the return value of the condition-case
body.  I thought there might be some built-in method for handling this,
but I'm thinking not.

Jay

RE: condition-case with multiple handlers

[Herring, Davis]

> >     (progn
> >       ...
> >       (setq noerror t))
> 
> Good idea, but it messes with the return value of the condition-case
> body.  I thought there might be some built-in method for handling this,
> but I'm thinking not.

I didn't know its value mattered, but you can just use prog1...

Davis