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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: OSX FSEvents file watching support
Date: Thu, 18 Jul 2019 15:30:08 +0300
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To: Michael Albinus <michael.albinus@gmx.de>
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> From: Michael Albinus <michael.albinus@gmx.de>
> Cc: muir@mnd.rs,  emacs-devel@gnu.org
> Date: Thu, 18 Jul 2019 14:16:29 +0200
> 
> You were responding to
> 
> --8<---------------cut here---------------start------------->8---
> 3. Publish an elisp package that calls out to an existing program
> that supports FSEvents like "fswatch".
> --8<---------------cut here---------------end--------------->8---
> 
> > To make myself clear, I was responding to the "publish an elisp
> > package" part of the OP's proposal, and my point was that I didn't
> > see how can this be done entirely in Lisp.
> 
> The crucial point of this is "calls out an existing program". That's
> what Tramp does in the process filters I've mentioned before.

Yes.  But once Tramp has the event description from the remote, how
does it inject it into Emacs?