Subject: bug#54191: 26.3; (elisp) `Magic File Names' FILENAME parameters: absolute names?

From: Eli Zaretskii <[email-masked]>
Date: Mon, 28 Feb 2022 15:48:54 +0200

> From: Drew Adams <[email-masked]>
> Date: Sun, 27 Feb 2022 22:42:39 +0000
> 
> Users shouldn't have to search the Elisp code base
> to try to figure out whether they might need to
> apply `expand-file-name' to a file name before
> passing it to some function.

It goes without saying that _every_ file-related function in Emacs
accepts _any_ kind of file names: absolute, relative, you name it.
What each function _does_ with each kind of file name is a different
matter.  In the specific case of file-remote-p this is described both
in the doc string and in the manual.