Re: Bell

[Stefan Monnier]

>>> +      (signal (car err) nil)))
>> Is there a particular reason why you used nil rather than (cdr err) as
>> second argument?
> The only reason is that other line-oriented commands in simple.el
> call `signal' explicitly with the second arg nil like:

>   (signal 'beginning-of-buffer nil)
>   (signal 'end-of-buffer nil)

> If it's more reliable with (cdr err), I will add it.

It's not that it's more reliable, it's just that (cdr err) holds the
info that was provided in the second arg of `signal' in the the signal
caught by the condition-case, so it makes sense to propagate it further,
whether it's nil or not.
I.e. (signal (car err) (cdr err)) is the canonical way to re-throw
a signal previously caught by condition-case.


        Stefan