Function encoding_rs::mem::is_str_bidi

pub fn is_str_bidi(buffer: &str) -> bool

Checks whether a valid UTF-8 buffer contains code points that trigger right-to-left processing.

The check is done on a Unicode block basis without regard to assigned vs. unassigned code points in the block. Additionally, the four RIGHT-TO-LEFT FOO controls in General Punctuation are checked for. Control characters that are technically bidi controls but do not cause right-to-left behavior without the presence of right-to-left characters or right-to-left controls are not checked for.