Re: dired cons bug?

[Harald Judt]

Am 10.08.22 um 13:26 schrieb Harald Judt:
> Hi,
>
> I have a question regarding using dired programmatically in Emacs 28.1. Say I
> do the following call to open a dired buffer and insert the files:
>
> (dired (cons "/home/user" '("/home/user/tmp/test/a/a" 
> "/home/user/tmp/test/b/b" "/home/user/tmp/test/c/c")))
>
> It works fine, I get a nice listing and can move around like expected, mark
> files and try to delete them. Now it gets interesting: Usually after hitting
> "x" to execute, then confirming the deletion, the buffer will refresh. But not
> in this case, not when I open dired using the cons above. I can revert the
> buffer using "g".
>
> Note that when I simply do (dired "/home/user/tmp/test"), then insert the
> subdir to show the files and delete them, this is not reproducible. The buffer
> will be refreshed immediately after the delete operation completes.
>
> Why? Am I missing something? Is this a (known) bug or expected behaviour? I've
> tried with emacs -Q, so it seems to be no configuration problem.
>
> Regards,
> Harald

I have found an explanation for my own question: The problem is that after a 
dired-do-xxxx command, the buffer of the _target_ directory will be refreshed. 
But the target directory of /home/user/tmp/test/a/a would be 
/home/user/tmp/test/a/, and that is different from the one used in the base 
dir of the cons (/home/user/). In fact, if I add a file /home/user/x and add 
that to the file list and delete it, the buffer will be reverted correctly. If 
I delete any of the other files, it won't.

Now, what could I do to programmatically revert the current dired buffer after 
executing a dired-do command?

Harald

--
`Experience is the best teacher.'

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