fix: fix corrupted attribute values when there is no text handler

Closes #38

src/saxes.ts

@@ -1526,15 +1526,22 @@ export class SaxesParser<O extends SaxesOptions = {}> {
           start = this.i;
           break;
         case SEMICOLON: {
+          const { entityReturnState } = this;
           const entity = this.entity + chunk.slice(start, this.prevI);
-          this.state = this.entityReturnState!;
+          this.state = entityReturnState!;
+          let parsed: string;
           if (entity === "") {
             this.fail("empty entity name.");
-            this.text += "&;";
-            return;
+            parsed = "&;";
+          }
+          else {
+            parsed = this.parseEntity(entity);
+            this.entity = "";
+          }
+
+          if (entityReturnState !== S_TEXT || this.textHandler !== undefined) {
+            this.text += parsed;
           }
-          this.text += this.parseEntity(entity);
-          this.entity = "";
           // eslint-disable-next-line no-labels
           break loop;
         }

test/issue-38.ts

@@ -0,0 +1,19 @@
+import { test } from "./testutil";
+
+test({
+  name: "issue 38",
+  xml: `\
+<?xml version="1.0" encoding="UTF-8"?>
+<top>
+<x>Fnord '&lt;' and then some.</x>
+<x x="foo"></x>
+</top>
+`,
+  expect: [
+    ["opentag", { name: "top", attributes: {}, isSelfClosing: false }],
+    ["opentag", { name: "x", attributes: {}, isSelfClosing: false }],
+    ["opentag", { name: "x", attributes: { x: "foo" }, isSelfClosing: false }],
+  ],
+  opt: {},
+  events: ["opentag"],
+});