From d8c14b9c2a0c147a66e041966c21caea9ce8c06e Mon Sep 17 00:00:00 2001
From: Mike Bostock <mbostock@gmail.com>
Date: Thu, 25 Apr 2013 12:33:06 -0700
Subject: [PATCH] Safer clean.

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index a8f6611433cc2..40ca697f167f8 100644
--- a/Makefile
+++ b/Makefile
@@ -38,4 +38,4 @@ component.json: src/component.js d3.js
 	@chmod a-w $@
 
 clean:
-	rm -f $(GENERATED_FILES)
+	rm -f -- $(GENERATED_FILES)