Support for Windows newlines.

config/interpolate_funcs.go

@@ -462,11 +462,12 @@ func interpolationFuncCeil() ast.Function {
 
 // interpolationFuncChomp removes trailing newlines from the given string
 func interpolationFuncChomp() ast.Function {
+	newlines := regexp.MustCompile(`(?:\r\n?|\n)*\z`)
 	return ast.Function{
 		ArgTypes:   []ast.Type{ast.TypeString},
 		ReturnType: ast.TypeString,
 		Callback: func(args []interface{}) (interface{}, error) {
-			return strings.TrimRight(args[0].(string), "\n"), nil
+			return newlines.ReplaceAllString(args[0].(string), ""), nil
 		},
 	}
 }

config/interpolate_funcs_test.go

@@ -386,10 +386,38 @@ func TestInterpolateFuncChomp(t *testing.T) {
 			},
 
 			{
-				`${chomp("goodbye\ncruel\nworld\n")}`,
-				`goodbye
-cruel
-world`,
+				fmt.Sprintf(`${chomp("%s")}`, "goodbye\ncruel\nworld"),
+				"goodbye\ncruel\nworld",
+				false,
+			},
+
+			{
+				fmt.Sprintf(`${chomp("%s")}`, "goodbye\r\nwindows\r\nworld"),
+				"goodbye\r\nwindows\r\nworld",
+				false,
+			},
+
+			{
+				fmt.Sprintf(`${chomp("%s")}`, "goodbye\ncruel\nworld\n"),
+				"goodbye\ncruel\nworld",
+				false,
+			},
+
+			{
+				fmt.Sprintf(`${chomp("%s")}`, "goodbye\ncruel\nworld\n\n\n\n"),
+				"goodbye\ncruel\nworld",
+				false,
+			},
+
+			{
+				fmt.Sprintf(`${chomp("%s")}`, "goodbye\r\nwindows\r\nworld\r\n"),
+				"goodbye\r\nwindows\r\nworld",
+				false,
+			},
+
+			{
+				fmt.Sprintf(`${chomp("%s")}`, "goodbye\r\nwindows\r\nworld\r\n\r\n\r\n\r\n"),
+				"goodbye\r\nwindows\r\nworld",
 				false,
 			},
 		},