tail: document FANCY flags in helptext

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

diff --git a/coreutils/Config.in b/coreutils/Config.in
index 6bdc85abbf76308be18c5d9dfde767385fb716ea..297f4655d3bc30b9a4f9947a85cbdf32d0d484f2 100644 (file)
--- 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