Compare strings after decoding them to handle unicode correctly

Author: evanphx

v5/patch.go

@@ -334,7 +334,27 @@ func (n *lazyNode) equal(o *lazyNode) bool {
 return false
 }
 
-return bytes.Equal(n.compact(), o.compact())
+nc := n.compact()
+oc := o.compact()
+
+if nc[0] == '"' && oc[0] == '"' {
+// ok, 2 strings
+
+var ns, os string
+
+err := json.Unmarshal(nc, &ns)
+if err != nil {
+return false
+}
+err = json.Unmarshal(oc, &os)
+if err != nil {
+return false
+}
+
+return ns == os
+}
+
+return bytes.Equal(nc, oc)
 }
 }
 

v5/patch_test.go

@@ -1078,6 +1078,12 @@ var EqualityCases = []EqualityCase{
 `null`,
 false,
 },
+{
+"Unicode",
+`{"name": "λJohn"}`,
+`{"name": "\u03BBJohn"}`,
+true,
+},
 }
 
 func TestEquality(t *testing.T) {