sleep: fix "sleep -- ARGS"

function                                             old     new   delta
sleep_main                                           116     119      +3
printf_main                                          860     837     -23
single_argv                                           50      25     -25
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 3/-48)             Total: -45 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/coreutils/printf.c b/coreutils/printf.c
index 7763d7c46..4edcfa9b5 100644
--- a/coreutils/printf.c
+++ b/coreutils/printf.c
@@ -425,9 +425,9 @@ int printf_main(int argc UNUSED_PARAM, char **argv)
         /* bash builtin errors out on "printf '-%s-\n' foo",
          * coreutils-6.9 works. Both work with "printf -- '-%s-\n' foo".
          * We will mimic coreutils. */
-        if (argv[1] && argv[1][0] == '-' && argv[1][1] == '-' && !argv[1][2])
-                argv++;
-        if (!argv[1]) {
+        argv = skip_dash_dash(argv);
+
+        if (!argv[0]) {
                 if ((ENABLE_ASH_PRINTF || ENABLE_HUSH_PRINTF)
                  && applet_name[0] != 'p'
                 ) {
@@ -437,8 +437,8 @@ int printf_main(int argc UNUSED_PARAM, char **argv)
                 bb_show_usage();
         }
 
-        format = argv[1];
-        argv2 = argv + 2;
+        format = argv[0];
+        argv2 = argv + 1;
 
         conv_err = 0;
         do {