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Re: using setq to create lists based on other lists...


From: Stefan Monnier
Subject: Re: using setq to create lists based on other lists...
Date: Tue, 04 Dec 2018 08:56:04 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> There's nothing wrong with it in Emacs Lisp

Actually, there is in the sense that these are global variables and so
can interfere with other Elisp packages.

> and a number of other Lisp dialects.

For most other Lisps what the user writes only creates havoc with its
own code because each program runs in its own process.  But Emacs being
its own kind of OS the situation is a bit different.  Of course similar
situations occur with "Lisp machine" kind of systems (or Smalltalk
machines, ...).


        Stefan




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