revision: disable min_age optimization with line-log

If one of the options --before, --min-age or --until is given,
limit_list() filters out younger commits early on.  Line-log needs all
those commits to trace the movement of line ranges, though.  Skip this
optimization if both are used together.

Reported-by: Мария Долгополова <dolgopolovamariia@gmail.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

revision.c

@@ -1410,7 +1410,8 @@ static int limit_list(struct rev_info *revs)
 				continue;
 			break;
 		}
-		if (revs->min_age != -1 && (commit->date > revs->min_age))
+		if (revs->min_age != -1 && (commit->date > revs->min_age) &&
+		    !revs->line_level_traverse)
 			continue;
 		date = commit->date;
 		p = &commit_list_insert(commit, p)->next;

t/t4211-line-log.sh

@@ -240,10 +240,12 @@ test_expect_success 'setup for checking line-log and parent oids' '
 	EOF
 	git add file.c &&
 	test_tick &&
+	first_tick=$test_tick &&
 	git commit -m "Add func1() and func2() in file.c" &&
 
 	echo 1 >other-file &&
 	git add other-file &&
+	test_tick &&
 	git commit -m "Add other-file" &&
 
 	sed -e "s/F1/F1 + 1/" file.c >tmp &&
@@ -283,4 +285,10 @@ test_expect_success 'parent oids with parent rewriting' '
 	test_cmp expect actual
 '
 
+test_expect_success 'line-log with --before' '
+	echo $root_oid >expect &&
+	git log --format=%h --no-patch -L:func2:file.c --before=$first_tick >actual &&
+	test_cmp expect actual
+'
+
 test_done