uutils/coreutils
Ver no GitHubdate: strftime flags propagate into composite specifiers (%-D, %-F, …)
Open
#11.657 aberto em 5 de abr. de 2026
U - datefuzzinggood first issue
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Description
Summary
GNU date treats composite strftime specifiers (%D, %F, %T, %r, %R, %c, %x, %X) as atomic: flags like - apply to the whole expansion, not to inner sub-fields. uutils lets the - flag propagate into the inner %m, producing 6/15/24 instead of 06/15/24.
Found by a fuzz_date run.
Reproduction
$ LC_ALL=C TZ=UTC /usr/bin/date -d '2024-06-15' '+%-D'
06/15/24
$ LC_ALL=C TZ=UTC target/debug/coreutils date -d '2024-06-15' '+%-D'
6/15/24
Test
#[test]
fn test_date_strftime_flag_on_composite() {
new_ucmd!()
.env("LC_ALL", "C")
.env("TZ", "UTC")
.arg("-d")
.arg("2024-06-15")
.arg("+%-D")
.succeeds()
.stdout_is("06/15/24\n");
}