--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-template-engine	Tue May 12 12:05:19 2009 +0200
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+cat > engine.py << EOF
+
+from mercurial import templater
+
+class mytemplater(object):
+    def __init__(self, loader, filters, defaults):
+        self.loader = loader
+
+    def process(self, t, map):
+        tmpl = self.loader(t)
+        for k, v in map.iteritems():
+            v = templater.stringify(v)
+            tmpl = tmpl.replace('{{%s}}' % k, v)
+        yield tmpl
+
+templater.engines['my'] = mytemplater
+EOF
+
+hg init test
+echo '[extensions]' > test/.hg/hgrc
+echo "engine = $PWD/engine.py" >> test/.hg/hgrc
+
+cd test
+cat > mymap << EOF
+changeset = my:changeset.txt
+EOF
+
+cat > changeset.txt << EOF
+{{rev}} {{node}} {{author}}
+EOF
+
+hg ci -Ama
+hg log --style=./mymap