1ed4b9e7ec
When renaming objects in the Media Library, s9y didn't check if a file with the same name already exists, resulting in a file name collision deleting both files from the database _and_ from disk. Add a check to avoid that. An error message would be nice, too, but that may be added later on. Tested on s9y-stable test instance. Signed-off-by: Thomas Hochstein <thh@inter.net>
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