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tr parse_sequence reuses chars iterator

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This commit is contained in:
Jeong YunWon 2021-06-10 17:41:39 +09:00
parent def5bec1ce
commit 8433c7726d
1 changed files with 3 additions and 2 deletions
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5
src/uu/tr/src/expand.rs
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@ -22,14 +22,15 @@ use std::ops::RangeInclusive;
/// character; octal escape sequences consume 1 to 3 octal digits.
#[inline]
fn parse_sequence(s: &str) -> (char, usize) {
let c = s.chars().next().expect("invalid escape: empty string");
let mut s = s.chars();
let c = s.next().expect("invalid escape: empty string");
if ('0'..='7').contains(&c) {
let mut v = c.to_digit(8).unwrap();
let mut consumed = 1;
let bits_per_digit = 3;
for c in s.chars().skip(1).take(2) {
for c in s.take(2) {
match c.to_digit(8) {
Some(c) => {
v = (v << bits_per_digit) | c;