diff --git a/.hgignore b/.hgignore
new file mode 100644
index 0000000000..c053a02579
--- /dev/null
+++ b/.hgignore
@@ -0,0 +1,14 @@
+# use glob syntax.
+syntax: glob
+
+src/shared/revision.h
+build/
+.directory
+*.orig
+*.rej
+*~
+
+# use regexp syntax.
+syntax: regexp
+
+^src/shared/revision\.h