Update MD034/no-bare-urls to handle more scenarios, simplify slightly, replace blanket MD034 suppression for https://github.com/mdn/content with specific (valid) issues (refs #607).

test/snapshots/markdownlint-test-scenarios.js.md

@@ -2966,6 +2966,26 @@ Generated by [AVA](https://avajs.dev).
             'no-bare-urls',
           ],
         },
+        {
+          errorContext: 'https://example.com#heading-',
+          errorDetail: null,
+          errorRange: [
+            27,
+            28,
+          ],
+          fixInfo: {
+            deleteCount: 28,
+            editColumn: 27,
+            insertText: '<https://example.com#heading->',
+          },
+          lineNumber: 68,
+          ruleDescription: 'Bare URL used',
+          ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/md034.md',
+          ruleNames: [
+            'MD034',
+            'no-bare-urls',
+          ],
+        },
       ],
       fixed: `# Detailed Results Bare URLs␊
       ␊
@@ -3001,7 +3021,11 @@ Generated by [AVA](https://avajs.dev).
       ␊
       This is not a bare [link]( https://example.com ).␊
       ␊
-      URLs in HTML are not bare:␊
+      Nor is [link](https://example.com/path-with(parens)).␊
+      ␊
+      Or <https://example.com/path-with(parens)>.␊
+      ␊
+      URLs in HTML attributes are not bare:␊
       ␊
       <element-name first-attribute=" https://example.com/first " second-attribute=" https://example.com/second ">␊
         Text␊
@@ -3011,11 +3035,30 @@ Generated by [AVA](https://avajs.dev).
         first-attribute=" https://example.com/first "␊
         second-attribute=" https://example.com/second "></element-name>␊
       ␊
+      URLs surrounded by HTML tags are not bare:␊
+      ␊
+      Not <code>https://example.com</code> bare.␊
+      ␊
+      Not <pre>https://example.com</pre> bare.␊
+      ␊
+      <p>␊
+      Not bare due to being in an HTML block:␊
+      https://example.com␊
+      <code>https://example.com</code>␊
+      <pre>https://example.com</pre>␊
+      </p>␊
+      ␊
       URLs in link and image text are not bare:␊
       ␊
       Text [link to https://example.com site](https://example.com) text.␊
       ␊
       Image ![for https://example.com site](https://example.com) text.␊
+      ␊
+      URLs may end with a dash: <https://example.com#heading-> {MD034}␊
+      ␊
+      ... when explicit: <https://example.com#heading->␊
+      ␊
+      ... when embedded: <code>https://example.com#heading-</code>␊
       `,
     }