We require the ability to forbid certain characters from being entered into certain fields. That, or we need to auto-remove/replace said characters upon form-submission.
We are generating file- and path-names using formulas and must exclude characters that pose liability within certain network/server environments.
The exclusion list must be customizable; but to give you a sense of the baseline:
" ’ ` ~ ! ? ; : @ # $ % ^ & * ( ) [ ] { } \ | / > < , . - Ø, etc.