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tr: process octal escape sequences

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closes #1817
This commit is contained in:
Daniel Rocco 2021-03-16 09:42:06 -04:00
parent 618d4a4fa5
commit fbb9c50050
2 changed files with 105 additions and 12 deletions
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63
tests/by-util/test_tr.rs
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@ -134,3 +134,66 @@ fn missing_required_second_arg_fails() {
assert!(!result.success);
assert!(result.stderr.contains("missing operand after"));
}
#[test]
fn test_interpret_backslash_escapes() {
new_ucmd!()
.args(&["abfnrtv", r"\a\b\f\n\r\t\v"])
.pipe_in("abfnrtv")
.succeeds()
.stdout_is("\u{7}\u{8}\u{c}\n\r\t\u{b}");
}
#[test]
fn test_interpret_unrecognized_backslash_escape_as_character() {
new_ucmd!()
.args(&["qcz+=~-", r"\q\c\z\+\=\~\-"])
.pipe_in("qcz+=~-")
.succeeds()
.stdout_is("qcz+=~-");
}
#[test]
fn test_interpret_single_octal_escape() {
new_ucmd!()
.args(&["X", r"\015"])
.pipe_in("X")
.succeeds()
.stdout_is("\r");
}
#[test]
fn test_interpret_one_and_two_digit_octal_escape() {
new_ucmd!()
.args(&["XYZ", r"\0\11\77"])
.pipe_in("XYZ")
.succeeds()
.stdout_is("\0\t?");
}
#[test]
fn test_octal_escape_is_at_most_three_digits() {
new_ucmd!()
.args(&["XY", r"\0156"])
.pipe_in("XY")
.succeeds()
.stdout_is("\r6");
}
#[test]
fn test_non_octal_digit_ends_escape() {
new_ucmd!()
.args(&["rust", r"\08\11956"])
.pipe_in("rust")
.succeeds()
.stdout_is("\08\t9");
}
#[test]
fn test_interpret_backslash_at_eol_literally() {
new_ucmd!()
.args(&["X", r"\"])
.pipe_in("X")
.succeeds()
.stdout_is("\\");
}