[SQUASH] fix "d:YYYYMMDD..$NEEDS_APPROXIDATE" case

[Eric Wong <e@80x24.org>]

diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index e0e8164d..fbcff2c3 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -302,7 +302,10 @@ sub date_parse_prepare {
 				$x = "$fmt$#$to_parse\0";
 			}
 			if ($pfx eq 'dt') {
-				s/\0%Y%m%d/\0%Y%m%d%H%M%S/ for @r;
+				for (@r) {
+					s/\0%Y%m%d/\0%Y%m%d%H%M%S/;
+					s/\A([0-9]{8})\z/${1}000000/;
+				}
 			}
 		}
 	} elsif ($pfx eq 'dt') {
diff --git a/t/search.t b/t/search.t
index b63a7672..47a67f7f 100644
--- a/t/search.t
+++ b/t/search.t
@@ -630,6 +630,11 @@ SKIP: {
 	like($qs, qr/\Abroken dt:$x_days_ago[0-9]{6}\.\./,
 		'date.phrase.with.dots');
 
+	$orig = $qs = 'd:20101002..now';
+	$s->query_approxidate($g, $qs);
+	like($qs, qr/\Adt:20101002000000\.\.[0-9]{14}\z/,
+		'approxidate on range-end only');
+
 	$ENV{TEST_EXPENSIVE} or
 		skip 'TEST_EXPENSIVE not set for argv overflow check', 1;
 	my @w;