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-rw-r--r--src/date.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/date.c b/src/date.c
index 755736ab6..288804a9b 100644
--- a/src/date.c
+++ b/src/date.c
@@ -87,7 +87,7 @@ static struct option const long_options[] =
{
{"date", required_argument, NULL, 'd'},
{"file", required_argument, NULL, 'f'},
- {"iso-8601", optional_argument, NULL, 'I'}, /* Deprecated. */
+ {"iso-8601", optional_argument, NULL, 'I'},
{"reference", required_argument, NULL, 'r'},
{"rfc-822", no_argument, NULL, 'R'},
{"rfc-2822", no_argument, NULL, 'R'},
@@ -131,6 +131,10 @@ Display the current time in the given FORMAT, or set the system date.\n\
\n\
-d, --date=STRING display time described by STRING, not `now'\n\
-f, --file=DATEFILE like --date once for each line of DATEFILE\n\
+ -I[TIMESPEC], --iso-8601[=TIMESPEC] output date/time in ISO 8601 format.\n\
+ TIMESPEC=`date' for date only (the default),\n\
+ `hours', `minutes', `seconds', or `ns' for date\n\
+ and time to the indicated precision.\n\
"), stdout);
fputs (_("\
-r, --reference=FILE display the last modification time of FILE\n\