diff -r 678d760c71ff -r daafaff4e5be tests/test-export.t
--- a/tests/test-export.t	Thu Apr 12 22:59:49 2018 +0900
+++ b/tests/test-export.t	Thu Apr 12 23:13:55 2018 +0900
@@ -159,6 +159,85 @@
   +foo-wdir
   $ hg revert -q foo
 
+Templated output to stdout:
+
+  $ hg export -Tjson 0
+  [
+   {
+    "branch": "default",
+    "date": [0.0, 0],
+    "desc": "foo-0",
+    "diff": "diff -r 000000000000 -r 871558de6af2 foo\n--- /dev/null\tThu Jan 01 00:00:00 1970 +0000\n+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n@@ -0,0 +1,1 @@\n+foo-0\n",
+    "node": "871558de6af2e8c244222f8eea69b782c94ce3df",
+    "parents": [],
+    "user": "test"
+   }
+  ]
+
+Templated output to single file:
+
+  $ hg export -Tjson 0:1 -o out.json
+  $ cat out.json
+  [
+   {
+    "branch": "default",
+    "date": [0.0, 0],
+    "desc": "foo-0",
+    "diff": "diff -r 000000000000 -r 871558de6af2 foo\n--- /dev/null\tThu Jan 01 00:00:00 1970 +0000\n+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n@@ -0,0 +1,1 @@\n+foo-0\n",
+    "node": "871558de6af2e8c244222f8eea69b782c94ce3df",
+    "parents": [],
+    "user": "test"
+   },
+   {
+    "branch": "default",
+    "date": [0.0, 0],
+    "desc": "foo-1",
+    "diff": "diff -r 871558de6af2 -r d1c9656e973c foo\n--- a/foo\tThu Jan 01 00:00:00 1970 +0000\n+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n@@ -1,1 +1,2 @@\n foo-0\n+foo-1\n",
+    "node": "d1c9656e973cfb5aebd5499bbd2cb350e3b12266",
+    "parents": ["871558de6af2e8c244222f8eea69b782c94ce3df"],
+    "user": "test"
+   }
+  ]
+
+Templated output to multiple files:
+
+  $ hg export -Tjson 0:1 -o 'out-{rev}.json'
+  $ cat out-0.json
+  [
+   {
+    "branch": "default",
+    "date": [0.0, 0],
+    "desc": "foo-0",
+    "diff": "diff -r 000000000000 -r 871558de6af2 foo\n--- /dev/null\tThu Jan 01 00:00:00 1970 +0000\n+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n@@ -0,0 +1,1 @@\n+foo-0\n",
+    "node": "871558de6af2e8c244222f8eea69b782c94ce3df",
+    "parents": [],
+    "user": "test"
+   }
+  ]
+  $ cat out-1.json
+  [
+   {
+    "branch": "default",
+    "date": [0.0, 0],
+    "desc": "foo-1",
+    "diff": "diff -r 871558de6af2 -r d1c9656e973c foo\n--- a/foo\tThu Jan 01 00:00:00 1970 +0000\n+++ b/foo\tThu Jan 01 00:00:00 1970 +0000\n@@ -1,1 +1,2 @@\n foo-0\n+foo-1\n",
+    "node": "d1c9656e973cfb5aebd5499bbd2cb350e3b12266",
+    "parents": ["871558de6af2e8c244222f8eea69b782c94ce3df"],
+    "user": "test"
+   }
+  ]
+
+Template keywrods:
+
+  $ hg export 0 -T '# {node|shortest}\n\n{diff}'
+  # 8715
+  
+  diff -r 000000000000 -r 871558de6af2 foo
+  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+  +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
+  @@ -0,0 +1,1 @@
+  +foo-0
+
 No filename should be printed if stdout is specified explicitly:
 
   $ hg export -v 1 -o -