[dolphin] [Bug 499245] ADMINISTRATOR PERMISSIONS: Deletion of entire directory upon CTRL-Z after merging folders

[Felix Ernst]

https://bugs.kde.org/show_bug.cgi?id=499245

--- Comment #3 from Felix Ernst <felixernst at kde.org> ---
Let's first identify what even is going wrong here.

> STEPS TO REPRODUCE
> 1. Create a /usr folder elsewhere, add directories /bin /lib /share (may only
> just require /usr not even need to do this I'm not gonna break my system over and over to test lol) and add some files in it.

1. So you have two /usr folders. One is in root i.e. "/usr", the other is
somewhere else i.e. "/some/other/place/usr"

> 2. Merge this with the actual /usr folder

2. You now "merge" the two. I assume this means moving the folder
"/some/other/place/usr" to "/", you are then asked what to do because there is
already a "usr" folder there and you choose "Merge".

> 3. Hit Ctrl + Z

I think now it tries to undo the previous move of the folder
"/some/other/place/usr" to "/". So it takes the only "/usr" folder that still
exists and "puts it back" to "/some/other/place/usr".

That's my interpretation of what is happening. I don't think this is an
admin-specific issue.

If my above interpretation is correct, the issue is that we store the moving of
"/some/other/place/usr" to the already existing "/usr" as a creation of a
"/usr" folder when in reality it already existed. The solution is probably to
not store "moves of folders that already existed" (which are not really "moves"
in the first place because a directory with that name already exists) and not
have this as something that can be undone. Only the actual move operations on
files need to be stored.

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