1 files changed, 7 insertions, 0 deletions
diff --git a/ifndef_wrapper.sh b/ifndef_wrapper.sh
new file mode 100755
index 0000000..a5c5ce6
--- /dev/null
+++ b/ifndef_wrapper.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# Wrap all "#define X Y" with a #ifndef X...#endif"
+
+sed -E 's/^(#define ([^ ]+) .*)/#ifndef \2\
+\1\
+#endif/'