3 ms·

For UTF-8 I believe the question is ill-posed. The "position" of a "character" in unicode is very hard to determine and depends largely on what you take to be a

by rocqua 5y ago

For UTF-8 I believe the question is ill-posed. The "position" of a "character" in unicode is very hard to determine and depends largely on what you take to be a character.

bmn__ 5y ago
Then UTF-8 should not be operated on directly. When reading from a file etc., first decode the input into an internal string format that has straight-forward linear access to each gc boundary.
- eesmith 5y ago
  Even then, https://en.wikipedia.org/wiki/Unicode_equivalence https://en.wikipedia.org/wiki/Unicode_equivalence . What does "matching character" mean given combining characters?
  - rocqua 5y ago
    Probably pick a canonical encoding and compare there.
    - ygra 5y ago
      Yeah, that's what the normalization forms are for. But still, almost no question how to do things in Unicode can be answered in a single sentence without disregarding 99 % of the complexity.