Add build options to control SuS compatability, allows numeric

option handling to be disabled.
Defaults to enabled, so no changes in default behaviour

1 files changed, 2 insertions, 0 deletions

diff --git a/coreutils/tail.c b/coreutils/tail.c
index 1db1e2b0f..cc1517a7e 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -121,6 +121,7 @@ int tail_main(int argc, char **argv)
         char *s, *buf;
         const char *fmt;
 
+#ifdef CONFIG_FEATURE_SUSv2
         /* Allow legacy syntax of an initial numeric option without -n. */
         if (argc >=2 && ((argv[1][0] == '+') || ((argv[1][0] == '-')
                         /* && (isdigit)(argv[1][1]) */
@@ -130,6 +131,7 @@ int tail_main(int argc, char **argv)
                 optarg = argv[1];
                 goto GET_COUNT;
         }
+#endif
 
         while ((opt = getopt(argc, argv, tail_opts)) > 0) {
                 switch (opt) {