X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=ifchange.go;h=913ddba83ee8f5a1fc9db0c7fa4df1bf4e922066;hb=b813667339b846924bb87a30f0c12bc998154ff6;hp=922939b37a431eb9bc512a5949a84f1c1bda4c7e;hpb=57563aa2c8687505b458aaece342cb38c834e658;p=goredo.git

diff --git a/ifchange.go b/ifchange.go
index 922939b..913ddba 100644
--- a/ifchange.go
+++ b/ifchange.go
@@ -179,6 +179,17 @@ RebuildDeps:
 }
 
 func ifchange(tgts []string, forced, traced bool) (bool, error) {
+	// only unique elements
+	m := make(map[string]struct{})
+	for _, t := range tgts {
+		m[t] = struct{}{}
+	}
+	tgts = tgts[:0]
+	for t := range m {
+		tgts = append(tgts, t)
+	}
+	m = nil
+
 	jsInit()
 	if !IsTopRedo {
 		defer jsAcquire("ifchange exiting")