Help with regex filtering?

Hello,

Here is my attempt at regex filtering, looking case insensitive cbz or cbr files.

rclone -v --include "*.{{(?i).cbz|.cbr}}" ls gcrypt:

Can anyone point in the right direction?

Close, but your filter is matching myfile..cbz etc, so you'd want to leave out one ., e.g.:

rclone -v --include "*.{{(?i)cbz|cbr}}" ls gcrypt: