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dired cons bug?

From: Harald Judt
Subject: dired cons bug?
Date: Wed, 10 Aug 2022 13:26:25 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0


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.


`Experience is the best teacher.'

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