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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: encode-time vs decode-time
Date: Tue, 06 Aug 2019 17:21:35 +0300
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To: Paul Eggert <eggert@cs.ucla.edu>
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In-reply-to: <cf47bf4b-31cf-69f3-0e65-38f1b0ee168a@cs.ucla.edu> (message from
 Paul Eggert on Mon, 5 Aug 2019 18:48:21 -0700)
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> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Mon, 5 Aug 2019 18:48:21 -0700
> Cc: Andy Moreton <andrewjmoreton@gmail.com>, emacs-devel@gnu.org
> 
> OK, after some cogitation I installed something along those lines into master. I 
> called the new function 'time-convert' by analogy with the existing functions 
> time-add etc. So now, as you suggested, encode-time has reverted to its old role 
> of converting from decoded timestamps to Lisp timestamps and its API is now simpler.

Thanks, but judging by the changes in Lisp files all over, it sounds
like this is a backward-incompatible change?  That'd be unfortunate.