al_ustr_get_next
int32_t al_ustr_get_next(const ALLEGRO_USTR *us, int *pos)
Find the code point in us beginning at *pos, then advance to the next code point.
On success return the code point value. If pos was out of bounds (e.g. past the end of the string), return -1. On an error, such as an invalid byte sequence, return -2. As with al_ustr_next, invalid byte sequences may be skipped while advancing.
See also: al_ustr_get, al_ustr_prev_get
Examples: ex_utf8
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