bug#16567: 24.3.50; pcase should signal an error if no case matches

[Helmut Eller]

On Wed, Sep 10 2014, Stefan Monnier wrote:

> I'm open to other suggestions, and `pcasex' is not unacceptable, so
> I think we're closing in.

pcase* looks less exotic that pcasex; though it's harder to type.

BTW, I find it surprising that this doesn't signal an error:

(pcase-let ((`(1 ,x) '("foo")))
 x)

But I suspect that "it's not an option" to change pcase-let.

Helmut