date: extend help text to explain compat date format. Closes 4820

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

diff --git a/coreutils/date.c b/coreutils/date.c
index 6a7d5fa..767e0d4 100644 (file)
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -129,6 +129,9 @@
 //usage:     "\n       [YYYY.]MM.DD-hh:mm[:ss]"
 //usage:     "\n       YYYY-MM-DD hh:mm[:ss]"
 //usage:     "\n       [[[[[YY]YY]MM]DD]hh]mm[.ss]"
+//usage:       IF_FEATURE_DATE_COMPAT(
+//usage:     "\n       'date TIME' form accepts MMDDhhmm[[YY]YY][.ss] instead"
+//usage:       )
 //usage:
 //usage:#define date_example_usage
 //usage:       "$ date\n"