v2-tap-test-psql-g-program.patch

diff --git a/src/bin/psql/t/001_basic.pl b/src/bin/psql/t/001_basic.pl
index 64ce012062..c8780d0a52 100644
--- a/src/bin/psql/t/001_basic.pl
+++ b/src/bin/psql/t/001_basic.pl
@@ -367,4 +367,33 @@ psql_fails_like(
 	qr/incorrect interval value '10e400'/,
 	'\watch out-of-range interval');
 
+# Test \g output piped into a program.
+# The program is perl -pe '' to simply copy the input to the output.
+my $g_file = "$tempdir/g_file_1.out";
+my $perlbin = $^X;
+$perlbin =~ s!\\!/!g if $PostgreSQL::Test::Utils::windows_os;
+my $pipe_cmd = "$perlbin -pe '' >$g_file";
+
+psql_like($node, "SELECT 'one' \\g | $pipe_cmd", qr//, "one command \\g");
+my $c1 = slurp_file($g_file);
+like($c1, qr/one/);
+
+psql_like($node, "SELECT 'two' \\; SELECT 'three' \\g | $pipe_cmd", qr//, "two commands \\g");
+my $c2 = slurp_file($g_file);
+like($c2, qr/two.*three/s);
+
+
+psql_like($node, "\\set SHOW_ALL_RESULTS 0\nSELECT 'four' \\; SELECT 'five' \\g | $pipe_cmd", qr//,
+  "two commands \\g with only last result");
+my $c3 = slurp_file($g_file);
+like($c3, qr/five/);
+unlike($c3, qr/four/);
+
+psql_like($node, "copy (values ('foo'),('bar')) to stdout \\g | $pipe_cmd",
+		  qr//,
+		  "copy output passed to \\g pipe");
+my $c4 = slurp_file($g_file);
+like($c4, qr/foo.*bar/s);
+
+
 done_testing();