diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 000000000..89b755c94
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,5 @@
+.git* export-ignore
+.hg* export-ignore
+*.c diff=cpp
+*.cpp diff=cpp
+*.h diff=cpp