Apply a consistent case-insensitive input for pattern matching

[ReneFroger]

Describe the bug
I have the following folder Foo with subfolder Bar inside it.

When I do cd and calling fifc, then I type foo bar and I see the folders Foo/Bar.

When I do mv sample.jpg and calling fifc again, then I type foo but I don't see the folder Foo because it contains a uppercase while my input has no uppercase for F. Same applies for Bar.

This might be confusing because usually you would expect the same matching pattern for folders when using cd.

If you might not be in favor of this approach, then perhaps consider to enable this with a setting?

• fish version
• Fish 3.6.1
• Distribution cat /etc/os-release
  Ubuntu 20.04 LTS