Should I allow non-Latin characters in filenames in a CLI application?

1. What characters should be avoided when naming files?
2. Which characters are acceptable in most filenames?
3. Why are special characters not allowed in filenames?

What characters should be avoided when naming files?

Illegal Filename Characters

Don't start or end your filename with a space, period, hyphen, or underline. Keep your filenames to a reasonable length and be sure they are under 31 characters. Most operating systems are case sensitive; always use lowercase. Avoid using spaces and underscores; use a hyphen instead.

Which characters are acceptable in most filenames?

Supported characters for a file name are letters, numbers, spaces, and ( ) _ - , .

Why are special characters not allowed in filenames?

To clarify this answer, these special characters could interfere with parsing a command line (or path) if they were in a filename.