Rename func which is now a method.

config/interpolate_funcs.go

@@ -47,7 +47,7 @@ func interpolationFuncCompact() ast.Function {
 			if !IsStringList(args[0].(string)) {
 				return args[0].(string), nil
 			}
-			return CompactStringList(StringList(args[0].(string))).String(), nil
+			return StringList(args[0].(string)).Compact().String(), nil
 		},
 	}
 }

config/string_list.go

@@ -25,7 +25,7 @@ type StringList string
 const stringListDelim = `B780FFEC-B661-4EB8-9236-A01737AD98B6`
 
 // Takes a Stringlist and returns one without empty strings in it
-func (sl StringList) CompactStringList() StringList {
+func (sl StringList) Compact() StringList {
 	parts := sl.Slice()
 
 	var newlist []string