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bug#50142: 27.1; Meaning of interactive specifier "f" unexpectedly depen
From: |
Markus Triska |
Subject: |
bug#50142: 27.1; Meaning of interactive specifier "f" unexpectedly depends on visited file |
Date: |
Sat, 21 Aug 2021 10:40:18 +0200 |
Let ~/f.el consist of:
(defun f (file)
(interactive "fFile:")
(message "The file is: %s" file))
When I start Emacs with:
$ cd
$ emacs -Q -l f.el
And then, in Emacs, do:
M-x f RET RET
Then the echo area shows, as expected:
The file is: ~/
In contrast, when I start Emacs with:
$ emacs -Q -l f.el f.el
And then perform the same steps as above, i.e.,
M-x f RET RET
then the echo area unexpectedly shows:
The file is: ~/f.el
This is unexpected, since the minibuffer prompt when doing M-x f RET
shows: "File:~/" (as before), indicating that pressing RET would yield
"~/", also as before, not "~/f.el".
The key difference between the two cases is that in the second
invocation, f.el is visited, and in the first case it is not visited.
I noticed this difference when testing cdvdmacs, visiting cdvdmacs.el
and then trying to add the directory in which cdvdmacs.el resides to the
list of files and directories I want to archive, and unexpectedly adding
only the file itself (cdvdmacs.el) instead of the entire directory:
https://www.metalevel.at/cdvdmacs/
Thank you and all the best,
Markus
In GNU Emacs 27.1 (build 1, x86_64-apple-darwin15.3.0, X toolkit, Xaw scroll
bars)
of 2020-12-12 built on mt-macbook
Windowing system distributor 'The X.Org Foundation', version 11.0.11502000
System Description: Mac OS X 10.11.3
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