Re: Replace trivial pcase occurrences in the Emacs sources

[Eli Zaretskii]

> From: Michael Heerdegen <address@hidden>
> Cc: address@hidden,  address@hidden,  address@hidden
> Date: Wed, 31 Oct 2018 20:50:58 +0100
> 
> Eli Zaretskii <address@hidden> writes:
> 
> > > I wouldn't call a `let' or `app' pattern that introduces a new binding
> > > destructuring per se.  OTOH, I would call a pattern using ` that tests
> > > e.g. the car of the matched object with e.g. `pred' destructuring even
> > > if that car is not bound to a variable.
> >
> > Can you give an example?  I don't think I follow.
> 
> (pcase '(1 2 3)
>   ((let a 3) a))
> ==> 3

Thanks, but I meant an example of what's described after the "OTOH".

> To give an exact accurate definition is nearly impossible, however.

That's not what I'm after.  I'm after a definition that's usable and
useful in practice, even if it has to be slightly inaccurate.