GNU bug report logs -
#394
wdired-change-to-wdired-mode can cause file deletion
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Reported by: xah lee <xah <at> xahlee.org>
Date: Thu, 12 Jun 2008 08:45:03 UTC
Severity: normal
Done: Stefan Monnier <monnier <at> iro.umontreal.ca>
Bug is archived. No further changes may be made.
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Your message dated Sat, 14 Jun 2008 13:01:52 -0400
with message-id <jwv63scdk9t.fsf-monnier+emacsbugreports <at> gnu.org>
and subject line Re: bug#394: wdired-change-to-wdired-mode can cause file deletion
has caused the Emacs bug report #394,
regarding wdired-change-to-wdired-mode can cause file deletion
to be marked as done.
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If this is not the case it is now your responsibility to reopen the
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[Message part 2 (message/rfc822, inline)]
In dired, do M-x wdired-change-to-wdired-mode.
Then, swap 2 files's names.
Emacs will ask if the first file should be overwritten. If answer
yes, it'll be deleted, and it wont be renamed. i.e. you lose a file.
This can be reproduced if you created 2 files, one named A and other
B. Then renamed them to B and A. (Possibly you will need to create 3
files and rename in particular cycle depending on how emacs choose
the order to rename... The key is to get emacs to prompte for the
overwrite of a file that should be renamed to something else later.)
This behavior is slightly unexpected and caused me to retrieve from
my backup disk. (the files are images and never edited, so it isn't
in emacs's backup)
Xah
∑ http://xahlee.org/
☄
[Message part 3 (message/rfc822, inline)]
> In dired, do M-x wdired-change-to-wdired-mode.
> Then, swap 2 files's names.
> Emacs will ask if the first file should be overwritten. If answer yes, it'll
> be deleted, and it wont be renamed. i.e. you lose a file.
Indeed, dired's rename is a "parallel" rename, whereas our underlying
C primitives only offer sequential renaming, so we need to de more work
to handle those cases.
I've installed a patch into the CVS trunk which should fix it (or at
least catch the problem before it's too late).
Stefan
This bug report was last modified 17 years and 1 day ago.
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