I am a lifetime Windows user and (like many people) I am used to organising important files on Windows machines by starting the file name with _
(underscore).
I found a hack that allows users to enable update a locale
language def file in Debian (Ubuntu Mint) here. This didn't work fully on Fedora so, after some help from the folks on Fedora Forum, I was able to figure out how to implement a system-update resilient (most of the time) way to enable "sort underscore in file system first" sorting (aka collating). Here's the thread on Fedora Forum.
First and most important: locale-gen
does not exist on fedora. The file mentioned by @markos was a "bash completion" file - not sure