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bug#57907: 29.0.50; Using keywords with cl-loop
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From: |
Gerd Möllmann |
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Subject: |
bug#57907: 29.0.50; Using keywords with cl-loop |
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Date: |
Sun, 18 Sep 2022 14:38:36 +0200 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 |
From: Philip Kaludercic @ 2022-09-18 12:03 UTC (permalink / raw)
To: 57907
> In Common Lisp the following to are equivalent
>
> (loop :repeat 5 :collect t)
>
> and
>
> (loop repeat 5 collect t)
>
> as keywords are shared among all packages.
Actually, that's not the reason why Common Lisp accepts that. The
reason is that the loop macro only looks at symbol names. In Common Lisp
(symbol-name :a) => "A"
(symbol-package :a) => #<PACKAGE "KEYWORD">
(symbol-name foo:a) => "A"
(symbol-package foo:a) => #<PACKAGE "FOO">
while in Emacs
(symbol-name :a) => ":a"
Wouldn't it be nice if Emacs finally decided to have Common Lisp packages?