options.
(tr invocation, echo invocation, printf invocation, test invocation,
expr invocation, basename invocation, chroot invocation,
nice invocation, nohup invocation, seq invocation):
This program doesn't reorder options.
(tr invocation): Mention --help, --version, --.
(echo invocation): Mention that -- isn't special.
(test invocation): Mention that the expression is optional,
and that test ! EXPR is like ! test EXPR.
(expr invocation): Mention --help, --version.
and FreeBSD compatibility. Add support for XSI syntax
(POSIX 1003.1-2004). Rename -s[N] to -S N. Remove documentation
for -h. -i is now -t dI (not d2) and -l is now -t dL (not d4).
rather than "tabstop".
(unexpand invocation): Use "blank" rather than "space" when
POSIX requires "blank". Define "blank". Initial blanks are
converted even if there's just one. For -a, convert two or
more blanks only if they occur just before a tab stop.
group must always be preceded by separator.
"chown : file" and "chown '' file" don't change the owner or group.
Update the explanation of what happens to the set-user-ID or
set-group-ID bits, e.g., they sometimes are not cleared if they
denote mandatory locking. Change "find"-oriented examples to use
chown -h.
stdin/stdout only when it is an operand, not when it is an
option-argument.
(shred invocation): "shred -- -" is equivalent to "shred -",
not to "shred ./-".
(tee invocation): "tee -" means to copy (again) to stdout.
how it affects the scheduling priority. (The old documentation
implied that the nice value equaled the scheduling priority, which
isn't accurate.) Document that the range of nice values might
exceed -20..19. Specify what happens when you give a nice value
that is out of range, or when you don't have permissions to lower
the nice value. Bash doesn't have a builtin 'nice', so don't say
"most shells" have one.
install invocation, mv invocation, ln invocation): Add -t as a
short option for --target-directory, and -T as a short option for
--no-target-directory. Clean up relevant synopses a bit, so that
the language is similar for all.
Paul Eggert