About [[MediaWiki:Mwe-upwiz-upload-count/en]]
Fragment of a discussion from Translating talk:MediaWiki
For languages being fortunate to have separate PLURAL branches for zero, one, and whatever else there is, this can be had with PLURAL, see MediaWiki:Mwe-upwiz-upload-count/ksh for a blueprint sample.
I think "None of the 7 files have been uploaded." would be good, would it not?