* libc/getopt.c (getopt_internal): Set optreset according to optind

	setting earlier.  Reevaluate POSIXLY_CORRECT if optreset is set to !0.
	Handle a leading '-' in options independently of posixly_correct.

1 files changed, 14 insertions, 11 deletions

diff --git a/winsup/cygwin/libc/getopt.c b/winsup/cygwin/libc/getopt.c
index ccec9b5..bc35f96 100644
--- a/winsup/cygwin/libc/getopt.c
+++ b/winsup/cygwin/libc/getopt.c
@@ -304,25 +304,28 @@ getopt_internal(int nargc, char * const *nargv, const char *options,
 		return (-1);
 
 	/*
+	 * XXX Some GNU programs (like cvs) set optind to 0 instead of
+	 * XXX using optreset.  Work around this braindamage.
+	 */
+	if (optind == 0)
+		optind = optreset = 1;
+
+	/*
 	 * Disable GNU extensions if POSIXLY_CORRECT is set or options
 	 * string begins with a '+'.
+	 *
+	 * CV, 2009-12-14: Check POSIXLY_CORRECT anew if optind == 0 or
+	 *                 optreset != 0 for GNU compatibility.
 	 */
-	if (posixly_correct == -1)
+	if (posixly_correct == -1 || optreset != 0)
 		posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
-	if (posixly_correct || *options == '+')
-		flags &= ~FLAG_PERMUTE;
-	else if (*options == '-')
+	if (*options == '-')
 		flags |= FLAG_ALLARGS;
+	else if (posixly_correct || *options == '+')
+		flags &= ~FLAG_PERMUTE;
 	if (*options == '+' || *options == '-')
 		options++;
 
-	/*
-	 * XXX Some GNU programs (like cvs) set optind to 0 instead of
-	 * XXX using optreset.  Work around this braindamage.
-	 */
-	if (optind == 0)
-		optind = optreset = 1;
-
 	optarg = NULL;
 	if (optreset)
 		nonopt_start = nonopt_end = -1;