What's a good regex to include accented characters in a simple way?
regex
Solution
Accented Characters: DIY Character Range Subtraction
If your regex engine allows it (and many will), this will work:
(?i)^(?:(?![×Þß÷þø])[-'0-9a-zÀ-ÿ])+$
Please see the demo (you can add characters to test).
Explanation
- `(?i)` sets case-insensitive mode
- The `^` anchor asserts that we are at the beginning of the string
- `(?:(?![×Þß÷þø])[-'0-9a-zÀ-ÿ])` matches one character...
- The lookahead `(?![×Þß÷þø])` asserts that the char is not one of those in the brackets
- `[-'0-9a-zÀ-ÿ]` allows dash, apostrophe, digits, letters, and chars in a wide accented range, from which we need to subtract
- The `+` matches that one or more times
- The `$` anchor asserts that we are at the end of the string
Reference
Extended ASCII Table
Problem
Right now my regex is something like this: [a-zA-Z0-9] but it does not include accented characters like I would want to. I would also like - ' , to be included.