tail: document FANCY flags in helptext

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

1 files changed, 4 insertions, 0 deletions

diff --git a/coreutils/Config.in b/coreutils/Config.in
index 6bdc85abb..297f4655d 100644
--- a/coreutils/Config.in
+++ b/coreutils/Config.in
@@ -686,6 +686,10 @@ config FEATURE_FANCY_TAIL
           The options (-q, -s, and -v) are provided by GNU tail, but
           are not specific in the SUSv3 standard.
 
+            -q      Never output headers giving file names
+            -s SEC  Wait SEC seconds between reads with -f
+            -v      Always output headers giving file names
+
 config TEE
         bool "tee"
         default n