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Re: Lisp watchpoints

From: Stefan Monnier
Subject: Re: Lisp watchpoints
Date: Sun, 29 Nov 2015 10:39:49 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)

>> I don't think you need to test "FUNCTIONP (watcher)".
>> And you don't need Ffuncall: what you wrote is similar to writing
>> (funcall #'funcall watcher operation where symbol newval)

> The first argument to CALLN is a C function implementing a Lisp
> function, like Ffuncall, but watcher isn't.  So the Ffuncall is needed
> and it's equivalent to (funcall watcher operation where symbol newval).

Duh, indeed, sorry!


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