errors: implement fmt.Formatter

slavamirovsky · Aug 18, 2016 · c999200 · c999200
1 parent a3a4e5b
commit c999200
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/errors/errors.go b/errors/errors.go
@@ -86,8 +86,10 @@ func Wrapf(err error, format string, args ...interface{}) error {
 }
 
 type errorWithCause interface {
-	Error() string
 	Cause() error
+	StackTrace() errors.StackTrace
+	error
+	fmt.Formatter
 }
 
 func parentOf(err error) error {