Question
SDK: folder:getParent() raises error instead of returning nil on root folder
The SDK call folder:getParent() raises the error "?:0: attempt to index field 'parent' (a nil value)" when called on the root folder of some catalogs on Windows -- it should return nil instead. To reproduce on LR 15.0.1 / Windows 11 ARM and Windows 11 Intel:
1. Download and uncompress this catalog folder:
2. Move the file "folder-getparent-bug.lua" from the catalog folder to the LR Scripts folder.
3. Start LR and open the catalog.
4. In the Scripts menu, invoke "folder-getparent-bug". Observe this output:
When tested on Mac OS 15.7.1, no error occurs:
Note that on Mac, the call to folder:getParent() returns 0 results rather than nil (though in most contexts, there's no difference).
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