[PATCH 2/2] date: show relative dates in the future

[Junio C Hamano <gitster@pobox.com>]

Inspired by an earlier patch on the list by Tom Xue, but I think
this is done in a much more maintainable way.

It still remains to be seen if this feature makes sense, though.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 date.c          | 27 ++++++++++++++++++++++-----
 t/t0006-date.sh |  2 ++
 2 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/date.c b/date.c
index b6ff04e..f897955 100644
--- a/date.c
+++ b/date.c
@@ -166,7 +166,7 @@ void show_date_relative(unsigned long time, int tz,
 		struct { const char *s, *p; } msg_years_only;
 		struct { const char *s, *p; } msg_years_months;
 		struct { const char *s, *p; } msg_years;
-	} msg[1] = {
+	} msg[2] = {
 		{
 			{ "%lu second ago", "%lu seconds ago" },
 			{ "%lu minute ago", "%lu minutes ago" },
@@ -182,14 +182,31 @@ void show_date_relative(unsigned long time, int tz,
 				"%s, %lu months ago"
 			},
 			{ "%lu year ago", "%lu years ago" },
-		}
+		},
+		{
+			{ "%lu second in the future", "%lu seconds in the future" },
+			{ "%lu minute in the future", "%lu minutes in the future" },
+			{ "%lu hour in the future", "%lu hours in the future" },
+			{ "%lu day in the future", "%lu days in the future" },
+			{ "%lu week in the future", "%lu weeks in the future" },
+			{ "%lu month in the future", "%lu months in the future" },
+			{ "%lu year", "%lu years" },
+			{
+				/* TRANSLATORS: "%s" is "<n> years" */
+				"%s, %lu month in the future",
+				/* TRANSLATORS: "%s" is "<n> years" */
+				"%s, %lu months in the future"
+			},
+			{ "%lu year in the future", "%lu years in the future" },
+		},
 	};
 
 	if (now->tv_sec < time) {
-		strbuf_addstr(timebuf, _("in the future"));
-		return;
+		diff = time - now->tv_sec;
+		pf = 1; /* in the future */
+	} else {
+		diff = now->tv_sec - time;
 	}
-	diff = now->tv_sec - time;
 
 	switch (format_relative_date(diff, &rd)) {
 	case rd_seconds:
diff --git a/t/t0006-date.sh b/t/t0006-date.sh
index 1d29810..eef932c 100755
--- a/t/t0006-date.sh
+++ b/t/t0006-date.sh
@@ -26,6 +26,8 @@ check_show 55188000 '1 year, 9 months ago'
 check_show 630000000 '20 years ago'
 check_show 31449600 '12 months ago'
 check_show 62985600 '2 years ago'
+check_show -5 '5 seconds in the future'
+check_show -55188000 '1 year, 9 months in the future'
 
 check_parse() {
 	echo "$1 -> $2" >expect
-- 
1.7.12.rc3.69.gaf0166d