Refer to
- https://en.wikipedia.org/wiki/User_talk:Magioladitis#Yobot_issue_on_Operation_Petticoat
- https://en.wikipedia.org/wiki/File:USS_Balao_standing_in_for_Operation_Petticoat%E2%80%8D_%27%E2%80%8Bs_fictional_USS_Sea_Tiger.png
- https://en.wikipedia.org/w/index.php?title=Operation_Petticoat&diff=672227431&oldid=672113480
These charachters should not be able to be in file names, nor in article titles (=page titles).