Add tests for MD051/link-fragments to validate quotes and accented ch…

…aracters (refs #536).

test/link-fragments.md

@@ -38,6 +38,12 @@
 
 [Valid](#valid-heading-with-embedded--comment)
 
+[Valid](#the-best-headin-for-testin-quotes)
+
+[Valid](#valid-heading-about-lh%C3%B4pitals-rule)
+
+[Valid](#en-t%C3%AAte-valide-dans-fran%C3%A7ais-pour-v%C3%A9rification)
+
 [Valid](#namedlink)
 
 [Valid](#idlink)
@@ -105,6 +111,12 @@ Text
 
 ### Valid Heading With Embedded <!-- comment --> Comment
 
+### The "Best" Headin' for Testin' Quotes
+
+### Valid Heading About L'Hôpital's Rule
+
+### En-tête Valide Dans Français Pour Vérification
+
 <a name="namedlink"></a>
 
 <a id = idlink></a>

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

@@ -20950,7 +20950,7 @@ Generated by [AVA](https://avajs.dev).
             31,
           ],
           fixInfo: null,
-          lineNumber: 120,
+          lineNumber: 132,
           ruleDescription: 'Link fragments should be valid',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/Rules.md#md051',
           ruleNames: [
@@ -20966,7 +20966,7 @@ Generated by [AVA](https://avajs.dev).
             36,
           ],
           fixInfo: null,
-          lineNumber: 122,
+          lineNumber: 134,
           ruleDescription: 'Link fragments should be valid',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/Rules.md#md051',
           ruleNames: [
@@ -20982,7 +20982,7 @@ Generated by [AVA](https://avajs.dev).
             28,
           ],
           fixInfo: null,
-          lineNumber: 124,
+          lineNumber: 136,
           ruleDescription: 'Link fragments should be valid',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/Rules.md#md051',
           ruleNames: [
@@ -20998,7 +20998,7 @@ Generated by [AVA](https://avajs.dev).
             18,
           ],
           fixInfo: null,
-          lineNumber: 126,
+          lineNumber: 138,
           ruleDescription: 'Link fragments should be valid',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/Rules.md#md051',
           ruleNames: [
@@ -21014,7 +21014,7 @@ Generated by [AVA](https://avajs.dev).
             21,
           ],
           fixInfo: null,
-          lineNumber: 128,
+          lineNumber: 140,
           ruleDescription: 'Link fragments should be valid',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/Rules.md#md051',
           ruleNames: [
@@ -21027,7 +21027,7 @@ Generated by [AVA](https://avajs.dev).
           errorDetail: null,
           errorRange: null,
           fixInfo: null,
-          lineNumber: 130,
+          lineNumber: 142,
           ruleDescription: 'Link fragments should be valid',
           ruleInformation: 'https://github.com/DavidAnson/markdownlint/blob/v0.0.0/doc/Rules.md#md051',
           ruleNames: [
@@ -21076,6 +21076,12 @@ Generated by [AVA](https://avajs.dev).
       ␊
       [Valid](#valid-heading-with-embedded--comment)␊
       ␊
+      [Valid](#the-best-headin-for-testin-quotes)␊
+      ␊
+      [Valid](#valid-heading-about-lh%C3%B4pitals-rule)␊
+      ␊
+      [Valid](#en-t%C3%AAte-valide-dans-fran%C3%A7ais-pour-v%C3%A9rification)␊
+      ␊
       [Valid](#namedlink)␊
       ␊
       [Valid](#idlink)␊
@@ -21143,6 +21149,12 @@ Generated by [AVA](https://avajs.dev).
       ␊
       ### Valid Heading With Embedded <!-- comment --> Comment␊
       ␊
+      ### The "Best" Headin' for Testin' Quotes␊
+      ␊
+      ### Valid Heading About L'Hôpital's Rule␊
+      ␊
+      ### En-tête Valide Dans Français Pour Vérification␊
+      ␊
       <a name="namedlink"></a>␊
       ␊
       <a id = idlink></a>␊