GNU bug report logs - #34338
26.1; delete-file return codes and failures

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Boruch Baum <boruch_baum <at> gmx.com>
To: Emacs Bug Reporting <bug-gnu-emacs <at> gnu.org>
Subject: 26.1; delete-file return codes and failures
Date: Tue, 5 Feb 2019 16:47:37 -0500

Subject: 26.1; delete-file return codes and failures

Currently:

A1) When delete-file successfully deletes a file, the function returns
    nil, not t.

A2) When the file does not exist, the function returns the same
    value - nil.

A3) When the file has been chmod'ed -w, the function performs the
    operation, with no regard to any option to emulate or not emulate 'rm
    -f', and also returns the identical value - nil.

A4) When either the file's containing folder is chmod'ed -x, or the file
    is chattr'ed +i, the function crashes.


I'd like to suggest:

  delete-file FILE &optional NOERROR FORCE

B1) return t on success

B2) raise an error when (not NOERROR) and:

  B2.1) file doesn't exist

  B2.2) (and (chmod -w) (not FORCE))

  B2.3) another form of permission denial is encountered

B3) return nil when NOERROR and:

  B2.1) file doesn't exist

  B2.2)  another form of permission denial is encountered


C) maybe log the exact error or reason for nil to *Messages*.



In GNU Emacs 26.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.2)
 of 2018-12-26, modified by Debian built on x86-ubc-01
System Description:	Devuan GNU/Linux 2.0.0 (ascii)

-- 
hkp://keys.gnupg.net
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