6 use crate::fmt::{Formatter, Result, Write};
7 use core::str::lossy::{Utf8Lossy, Utf8LossyChunk};
9 pub fn debug_fmt_bytestring(slice: &[u8], f: &mut Formatter<'_>) -> Result {
10 // Writes out a valid unicode string with the correct escape sequences
11 fn write_str_escaped(f: &mut Formatter<'_>, s: &str) -> Result {
12 for c in s.chars().flat_map(|c| c.escape_debug()) {
19 for Utf8LossyChunk { valid, broken } in Utf8Lossy::from_bytes(slice).chunks() {
20 write_str_escaped(f, valid)?;
22 write!(f, "\\x{:02X}", b)?;