Re: Instead of pcase

[Richard Stallman]

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        > (`(,_ . ,(and (pred functionp) f)) (funcall f))
        > (`(,hookfun . (,start ,end ,collection . ,plist))

I read the Info documentation of pcase a few days ago and I can't
recall the rules for understanding those two pcase clauses.  What I
recall is that they are not to be interpreted as Lisp expressions.
They contain code that looks like Lisp but does not have the same
semantic rules as Lisp.

    `(,_ . ,(and (pred functionp) f))

is not Lisp.

    `(,hookfun . (,start ,end ,collection . ,plist)

is not Lisp either.  That list would be meaningful as a Lisp
expression but what it means here is different.

That is a consequence of the terse little language that pcase defines.

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)