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Re: Lisp primitives and their calling of the change hooks


From: Stefan Monnier
Subject: Re: Lisp primitives and their calling of the change hooks
Date: Tue, 09 Jan 2018 15:07:58 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> The way I see it, to announce in advance that the original region will be
> deleted (by calling b-c-f for it) is suboptimal.

But not incorrect.

> If the decompression fails, we need to balance that b-c-f with
> a "fake" a-c-f call.

No, we don't.  It's still within the rules to announce an upcoming
change with b-c-f and then not to carry through (i.e. not make any
changes and not call a-c-f).


        Stefan



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