Re: Instead of pcase

[Dmitry Gutov]

On 27/11/2023 05:09, Richard Stallman wrote:
> [[[ To any NSA and FBI agents reading my email: please consider    ]]]
> [[[ whether defending the US Constitution against all enemies,     ]]]
> [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
>
>    > I suggest you try rewriting the definition of completion-help-at-point
>    > using your alternative construct.
>
> I tried to do this, and it isn't hard to do this by formulating each clause
> to use :match.

I didn't think it would be difficult. But then one would compare the 
solutions.

> However, to make the simplest possible result, I need to know
> all the kinds of values that RES can have.  For instance, at this point,
>
>        (`(,hookfun . ,_)
>         ;; The hook function already performed completion :-(
>         ;; Not much we can do at this point.
>         (message "%s already performed completion!" hookfun)
>         nil)
>
> what are the possible values of RES that will NOT match that pattern?

Since "_" means "anything", the pcase form does enumerate all possible 
options (anything else would be a bug in the code producing res).