src/lib/libc/stdlib/getopt_long.c, branch release/11.1.0

Merge intermediate OpenBSD v1.25 changes (almost identical to ours)

2014-06-22T21:54:57+00:00

to reduce diff and bump OpenBSD patch level to v1.26.

MFC after:      2 weeks

getopt(3): recognize option:: as GNU extension for "optional options".

2014-06-22T20:13:57+00:00

Also ANSIfy a function declaration.

While here update the OpenBSD patch level in getopt_long.c as we
already have the corresponding change.

Obtained from:	NetBSD
MFC after:	2 weeks

Switch from 4-clause to 2-clause BSD license. (OpenBSD r1.22)

2012-06-11T22:25:20+00:00

No functional change.

Obtained from:	NetBSD via OpenBSD

Keep compatible parts in sync with OpenBSD v1.21, add some comments.

2006-09-23T14:48:31+00:00

No functional changes.

Remove code #ifndef'ed in prev. commit to stay in sync with OpenBSD

2006-09-22T18:59:03+00:00

v1.21 which just do that.

Be more GNU compatible:

2006-09-22T17:01:38+00:00

don't be greedy on the GNU "::" extension when arg separated by whitespace
and POSIX_CORRECTLY is set. From POSIX point of view this is unclear
situation, so minimal assumption looks right.

Keep it sync with OpenBSD:

2004-07-06T13:58:45+00:00

An optional argument cannot start with '-', even if permutation is
disabled.

Obtained from: OpenBSD getopt_long.c v1.17

Simplify one condition in prev. commit:

2004-04-01T22:32:28+00:00

short_too already assumes FLAG_LONGONLY

Fix parsing of ambiguous options, whole loop must be processed

2004-04-01T22:09:07+00:00

Make GNU-compatible following case:

2004-03-06T14:24:10+00:00

single '-' in command line and '-' (non-first) in options