Fix MD025 rule

lib/md025.js

@@ -23,7 +23,7 @@ module.exports = {
         if (hasTopLevelHeading || foundFrontMatterTitle) {
           addErrorContext(onError, token.lineNumber,
             token.line.trim());
-        } else if (token.lineNumber === 1) {
+        } else {
           hasTopLevelHeading = true;
         }
       }

style/relaxed.json

@@ -8,5 +8,6 @@
   "no-inline-html": false,
   "no-bare-urls": false,
   "fenced-code-language": false,
+  "single-title": false,
   "first-line-h1": false
 }

test/break-all-the-rules.md

@@ -126,6 +126,7 @@ Strong **with** different style {MD050}
       "markdownlint"
     ]
   },
+  "single-title": false,
   "link-image-style": {
     "full": false
   }

test/heading_mutliple_h1_no_toplevel.md

@@ -2,7 +2,7 @@ Some introductory text
 
 # Heading 1
 
-# Heading 2
+# Heading 2 {MD025}
 
 <!-- markdownlint-configure-file {
   "first-line-heading": false

test/headings_with_spaces_at_the_beginning.md

@@ -21,5 +21,6 @@ Some text
 
 <!-- markdownlint-configure-file {
   "heading-style": false,
+  "single-title": false,
   "first-line-heading": false
 } -->

test/lists-and-headings.md

@@ -20,5 +20,6 @@ Heading 3
 * list
 
 <!-- markdownlint-configure-file {
+  "single-title": false,
   "first-line-heading": false
 } -->

test/markdownlint-test.js

@@ -456,6 +456,7 @@ test("styleAll", async(t) => {
       "MD022": [ 86 ],
       "MD023": [ 40 ],
       "MD024": [ 35 ],
+      "MD025": [ 27, 31, 33, 35, 40 ],
       "MD026": [ 40 ],
       "MD027": [ 42 ],
       "MD028": [ 43 ],

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

@@ -7208,7 +7208,7 @@ Generated by [AVA](https://avajs.dev).
             insertText: `␊
             `,
           },
-          lineNumber: 134,
+          lineNumber: 135,
           ruleDescription: 'Files should end with a single newline character',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/md047.md',
           ruleNames: [
@@ -7541,6 +7541,7 @@ Generated by [AVA](https://avajs.dev).
             "markdownlint"␊
           ]␊
         },␊
+        "single-title": false,␊
         "link-image-style": {␊
           "full": false␊
         }␊
@@ -14640,12 +14641,27 @@ Generated by [AVA](https://avajs.dev).
 > Snapshot 1
 
     {
-      errors: [],
+      errors: [
+        {
+          errorContext: '# Heading 2 {MD025}',
+          errorDetail: null,
+          errorRange: null,
+          fixInfo: null,
+          lineNumber: 5,
+          ruleDescription: 'Multiple top-level headings in the same document',
+          ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/md025.md',
+          ruleNames: [
+            'MD025',
+            'single-title',
+            'single-h1',
+          ],
+        },
+      ],
       fixed: `Some introductory text␊
       ␊
       # Heading 1␊
       ␊
-      # Heading 2␊
+      # Heading 2 {MD025}␊
       ␊
       <!-- markdownlint-configure-file {␊
         "first-line-heading": false␊
@@ -16114,6 +16130,7 @@ Generated by [AVA](https://avajs.dev).
       ␊
       <!-- markdownlint-configure-file {␊
         "heading-style": false,␊
+        "single-title": false,␊
         "first-line-heading": false␊
       } -->␊
       `,
@@ -32071,6 +32088,7 @@ Generated by [AVA](https://avajs.dev).
       * list␊
       ␊
       <!-- markdownlint-configure-file {␊
+        "single-title": false,␊
         "first-line-heading": false␊
       } -->␊
       `,