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


From: Daimrod
Subject: bug#16567: 24.3.50; pcase should signal an error if no case matches
Date: Mon, 27 Jan 2014 11:27:26 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)

Helmut Eller <address@hidden> writes:

> pcase returns nil for this example:
>
>  (pcase 3
>    (1 1)
>    (2 2))
>
> it would be more useful if it would signal an error instead.  Manually
> adding a "catch-all case" and inventing some error message is tedious
> and it's also easy to forget.

Wouldn't a `epcase' (as in `cl-ecase') be more appropriate for this
use-case?

-- 
Daimrod/Greg





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