diff --git a/contrib/btree_gin/.gitignore b/contrib/btree_gin/.gitignore
index c3ce67c1407ecab5b6a0b633d1289fc9973a3e6c..7cebcf00f84412e7cfd27ff3204957ef0ec6975e 100644
--- a/contrib/btree_gin/.gitignore
+++ b/contrib/btree_gin/.gitignore
@@ -1 +1,3 @@
 /btree_gin.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/btree_gist/.gitignore b/contrib/btree_gist/.gitignore
index 95b6332299e824f0e013c20c9f3d2af353f14043..46318eaa7b0655ad6476489906acae043d777070 100644
--- a/contrib/btree_gist/.gitignore
+++ b/contrib/btree_gist/.gitignore
@@ -1 +1,3 @@
 /btree_gist.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/citext/.gitignore b/contrib/citext/.gitignore
index 3f449cfc46e4cf5e128a50428a3e7a27d7433d3d..e6268171565d8674bfc4781c707d932302783bdb 100644
--- a/contrib/citext/.gitignore
+++ b/contrib/citext/.gitignore
@@ -1 +1,3 @@
 /citext.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/cube/.gitignore b/contrib/cube/.gitignore
index bb28b9327c10859afb0cd00e8768d36fd5f5e860..9f60da507879ce66fd20f1f3af6fbf1d3d2cd652 100644
--- a/contrib/cube/.gitignore
+++ b/contrib/cube/.gitignore
@@ -1,3 +1,5 @@
 /cubeparse.c
 /cubescan.c
 /cube.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/dblink/.gitignore b/contrib/dblink/.gitignore
index 985b73d394973221f61a8aaa2f4fd2ed3a49cc51..fb7e8728bcffd5b5cdd405a8cbd4f0d21ca79c44 100644
--- a/contrib/dblink/.gitignore
+++ b/contrib/dblink/.gitignore
@@ -1 +1,3 @@
 /dblink.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/dict_int/.gitignore b/contrib/dict_int/.gitignore
index 90a29e83fa2f4871fbc35364b1535c517b9c8735..932dda6d8419fda794f24485cca753382ade74cd 100644
--- a/contrib/dict_int/.gitignore
+++ b/contrib/dict_int/.gitignore
@@ -1 +1,3 @@
 /dict_int.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/dict_xsyn/.gitignore b/contrib/dict_xsyn/.gitignore
index 4f1dc1e8b3961684bd46311deecf8b817880db65..0ebd61caaff987bd2d6451a6a52365ac813d0e8c 100644
--- a/contrib/dict_xsyn/.gitignore
+++ b/contrib/dict_xsyn/.gitignore
@@ -1 +1,3 @@
 /dict_xsyn.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/earthdistance/.gitignore b/contrib/earthdistance/.gitignore
index 86caae7daa9d2e233a74d467dc037d93c75a3d65..366a0a399e7cf1f5b3a7c941126f0e7ef9f93aac 100644
--- a/contrib/earthdistance/.gitignore
+++ b/contrib/earthdistance/.gitignore
@@ -1 +1,3 @@
 /earthdistance.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/hstore/.gitignore b/contrib/hstore/.gitignore
index 737d3655c6436670e321b9bd41cb6b8e8d35b0ce..d7af95330c380d468c35f781f34de30ea05709a5 100644
--- a/contrib/hstore/.gitignore
+++ b/contrib/hstore/.gitignore
@@ -1 +1,3 @@
 /hstore.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/intarray/.gitignore b/contrib/intarray/.gitignore
index e9985910a353d798cb651e8cf36c40e06be4a596..761a9b260743d5d85d29b5baadd755395b9a8131 100644
--- a/contrib/intarray/.gitignore
+++ b/contrib/intarray/.gitignore
@@ -1 +1,3 @@
 /_int.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/ltree/.gitignore b/contrib/ltree/.gitignore
index 85d1e298b48b77c274d40013f7308b9df0ca2414..49883e82a3ac20b49c748339f62d44f511e5e55b 100644
--- a/contrib/ltree/.gitignore
+++ b/contrib/ltree/.gitignore
@@ -1 +1,3 @@
 /ltree.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/pg_trgm/.gitignore b/contrib/pg_trgm/.gitignore
index 3272f08f53b67e5ab5f3ca0ca392bb3fa5e857bf..9cda826ca43f8a0cd26207c066fbb8ec6f0c5ffd 100644
--- a/contrib/pg_trgm/.gitignore
+++ b/contrib/pg_trgm/.gitignore
@@ -1 +1,3 @@
 /pg_trgm.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/pgcrypto/.gitignore b/contrib/pgcrypto/.gitignore
index 3cdb7a6396e8062d6074e24119d2f053a64e862b..07b24d98f0343cfcf562ad22202f17f8726f94d3 100644
--- a/contrib/pgcrypto/.gitignore
+++ b/contrib/pgcrypto/.gitignore
@@ -1 +1,3 @@
 /pgcrypto.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/seg/.gitignore b/contrib/seg/.gitignore
index d2a71ec0dd395209ce0a1932cb8ff0257fefcedd..a8973ff696c3356d33610e9154b1c79472d3e5d6 100644
--- a/contrib/seg/.gitignore
+++ b/contrib/seg/.gitignore
@@ -1,3 +1,5 @@
 /segparse.c
 /segscan.c
 /seg.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/tablefunc/.gitignore b/contrib/tablefunc/.gitignore
index 3477af4d4b88bfc0601355c59c27165e67980c03..b28639637bcf350646c2b611e2e9d3bf1eeac4f7 100644
--- a/contrib/tablefunc/.gitignore
+++ b/contrib/tablefunc/.gitignore
@@ -1 +1,3 @@
 /tablefunc.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/test_parser/.gitignore b/contrib/test_parser/.gitignore
index 54cb045adb801d87a0de2dc1f8616b6c3c941443..c07f518855cc8544ed2450fd5e9b0c99d5b13850 100644
--- a/contrib/test_parser/.gitignore
+++ b/contrib/test_parser/.gitignore
@@ -1 +1,3 @@
 /test_parser.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/tsearch2/.gitignore b/contrib/tsearch2/.gitignore
index b5da0e9f7d129cf9764140557a29308456b1484d..1d34309d00899acc2a18a9d38b62e5b9a0b93e7e 100644
--- a/contrib/tsearch2/.gitignore
+++ b/contrib/tsearch2/.gitignore
@@ -1 +1,3 @@
 /tsearch2.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/unaccent/.gitignore b/contrib/unaccent/.gitignore
index 30a87490489589460319ed1d2f7a1b113590e209..6d74a7617fd803b8bd6d5fd73a35b1f98fce26e8 100644
--- a/contrib/unaccent/.gitignore
+++ b/contrib/unaccent/.gitignore
@@ -1 +1,3 @@
 /unaccent.sql
+# Generated subdirectories
+/results/
diff --git a/contrib/xml2/.gitignore b/contrib/xml2/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..19b6c5ba425ca92d1bb371bf43d9cdae372f8c1a
--- /dev/null
+++ b/contrib/xml2/.gitignore
@@ -0,0 +1,2 @@
+# Generated subdirectories
+/results/
diff --git a/src/pl/plperl/.gitignore b/src/pl/plperl/.gitignore
index 4ee7d6095b22d4ccffc0974f9083d80b8ef6d1f2..c04f42ba07a41dccd30554081b252bea0d1ee036 100644
--- a/src/pl/plperl/.gitignore
+++ b/src/pl/plperl/.gitignore
@@ -2,3 +2,6 @@
 /Util.c
 /perlchunks.h
 /plperl_opmask.h
+
+# Generated subdirectories
+/results/
diff --git a/src/pl/plpython/.gitignore b/src/pl/plpython/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..19b6c5ba425ca92d1bb371bf43d9cdae372f8c1a
--- /dev/null
+++ b/src/pl/plpython/.gitignore
@@ -0,0 +1,2 @@
+# Generated subdirectories
+/results/
diff --git a/src/pl/tcl/.gitignore b/src/pl/tcl/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..19b6c5ba425ca92d1bb371bf43d9cdae372f8c1a
--- /dev/null
+++ b/src/pl/tcl/.gitignore
@@ -0,0 +1,2 @@
+# Generated subdirectories
+/results/
diff --git a/src/pl/tcl/modules/.gitignore b/src/pl/tcl/modules/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..89581887c48edd86168e83b432fdcd0d2e7659c2
--- /dev/null
+++ b/src/pl/tcl/modules/.gitignore
@@ -0,0 +1,3 @@
+/pltcl_delmod
+/pltcl_listmod
+/pltcl_loadmod