[bug#45021] [PATCH 1/2] image: Add system field.

[Danny Milosavljevic]

Hi Mathieu,

On Fri, 04 Dec 2020 09:12:13 +0100
Mathieu Othacehe <othacehe@gnu.org> wrote:

> I used "eq?" because if "system" is left to its default in some image
> definition, then we would end-up comparing "#f" and a string.

Yeah, but eq? only compares the "addresses" of things, not the content.

(eq? "a" "a") could totally be #f if one is unlucky.

For example try:

(eq? "a" (read))

and enter "a".  The result will be #f.

On the other hand, (equal? "a" "a") would work; also (equal? "a" #f) would
not fail.

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