What are the requirements for the Flux project file name?

Yann_Le_Floch

• To use allowed characters only without any space neither in the file name nor in the directory name. Allowed characters for the file name: +-./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~
• To not exceed maximum length of 256 characters