gitattributes: specify word diff regex for C and C++ sources

This makes git diff --word-diff easier to read.

diff --git a/.gitattributes b/.gitattributes
new file mode 100644 (file)
index 0000000..1da6af4
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+*.c    diff=cpp
+*.cpp  diff=cpp