date: handle long options

RFC2822 obsoletes RFC822; Silently accept --rfc-822 and return rfc2822
output for compatibility.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/coreutils/date.c b/coreutils/date.c
index 09ced0ea1..a230fe2b7 100644
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -69,6 +69,18 @@ static void maybe_set_utc(int opt)
                 putenv((char*)"TZ=UTC0");
 }
 
+#if ENABLE_LONG_OPTS
+static const char date_longopts[] ALIGN1 =
+                "rfc-822\0" No_argument "R"
+                "rfc-2822\0" No_argument "R"
+                "set\0" Required_argument "s"
+                "utc\0" No_argument "u"
+                /*"universal\0" No_argument "u"*/
+                "date\0" Required_argument "d"
+                "reference\0" Required_argument "r"
+                ;
+#endif
+
 int date_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int date_main(int argc UNUSED_PARAM, char **argv)
 {
@@ -84,6 +96,7 @@ int date_main(int argc UNUSED_PARAM, char **argv)
 
         opt_complementary = "d--s:s--d"
                 IF_FEATURE_DATE_ISOFMT(":R--I:I--R");
+        IF_LONG_OPTS(applet_long_options = date_longopts;)
         opt = getopt32(argv, "Rs:ud:r:"
                         IF_FEATURE_DATE_ISOFMT("I::D:"),
                         &date_str, &date_str, &filename