diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,6 @@
+;;; Directory Local Variables            -*- no-byte-compile: t -*-
+;;; For more information see (info "(emacs) Directory Variables")
+
+;; for C and C++, we use 2 space offset, no tabs
+((prog-mode . ((c-basic-offset . 2)
+              (indent-tabs-mode . nil)))