Quote:
Originally Posted by theducks
NBSP is not a valid file name character.
Not allowing, just saves the struggle to make a valid filename on ALL OS.
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While I definitely agree with the sentiment that NBSPs in filenames is not good practice, I am going to nitpick the broadness of your claims here. What constitutes a valid filename character depends on the filesystem. For example,
NTFS uses Unicode to encode path names and
does not prohibit nbsp characters.
Furthermore, as I understand them, OP isn't bothered if a title has nbsps replaced with ordinary spaces in the filename itself, and is instead mostly interested in tweaking the metadata in their Calibre library to distinguish a value of “Unknown” from the special value Calibre looks out for, which is that same string of “Unknown”, so that in the end, OP's custom “Unknown” tag appears in the tag browser instead of being ignored.