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| author | Jim Meyering <meyering@redhat.com> | 2009-09-07 22:10:10 +0200 |
|---|---|---|
| committer | Jim Meyering <meyering@redhat.com> | 2009-09-07 23:19:56 +0200 |
| commit | af6436559c2954d7f35b7fec29dfcbaa4ebdc03b (patch) | |
| tree | 4c5d53442d729d663c15809899bd5c03bdf13b6d /tests/tail-2/pid | |
| parent | fd9750b0ffb691d2ad97551eada5c2802df3c805 (diff) | |
| download | coreutils-af6436559c2954d7f35b7fec29dfcbaa4ebdc03b.tar.xz | |
tail: ignore -f for piped-stdin, as POSIX requires
* src/tail.c (main): Tailing a pipe "forever" is not useful,
and POSIX specifies that tail ignore the -f when there is no
file argument and stdin is a FIFO or pipe. So we do that.
In addition, GNU tail excludes "-" arguments from the list of files
to tail forever, when the associated file descriptor is connected
to a FIFO or pipe. Before this change, ":|tail -f" would hang.
Reported by Ren Yang and Ulrich Drepper.
* tests/tail-2/pipe-f: Test for this.
* tests/tail-2/pipe-f2: Ensure tail doesn't exit early for a fifo.
* tests/Makefile.am (TESTS): Add these tests.
* NEWS (POSIX conformance): Mention it.
Diffstat (limited to 'tests/tail-2/pid')
0 files changed, 0 insertions, 0 deletions