date: make it accept ISO date format. Fix help text.

make testsuite actually test something useful.

function                                             old     new   delta
date_main                                           1094    1149     +55

1 files changed, 2 insertions, 1 deletions

diff --git a/include/usage.h b/include/usage.h
index acc72d158..cbc5cb0a2 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -612,8 +612,9 @@
         ) \
      "\n" \
      "\nRecognized formats for TIME:" \
-     "\n        [hh:]mm:ss" \
+     "\n        hh:mm[:ss]" \
      "\n        [YYYY.]MM.DD-hh:mm[:ss]" \
+     "\n        YYYY-MM-DD hh:mm[:ss]" \
      "\n        MMDDhhmm[[YY]YY][.ss]" \
 
 #define date_example_usage \