Update MD051/link-fragments to not provide error context for multi-line scenarios.

Author: DavidAnson

demo/markdownlint-browser.js

@@ -6202,11 +6202,14 @@ module.exports = {
             var _loop = function _loop() {
               var definition = _step4.value;
               if (definition.text.length > 1 && definition.text.startsWith("#") && !fragments.has(definition.text)) {
+                // eslint-disable-next-line no-undef-init
+                var context = undefined;
                 // eslint-disable-next-line no-undef-init
                 var range = undefined;
                 // eslint-disable-next-line no-undef-init
                 var fixInfo = undefined;
                 if (link.startLine === link.endLine) {
+                  context = link.text;
                   range = [link.startColumn, link.endColumn - link.startColumn];
                   fixInfo = {
                     "editColumn": definition.startColumn,
@@ -6220,9 +6223,9 @@ module.exports = {
                 if (mixedCaseKey) {
                   // @ts-ignore
                   (fixInfo || {}).insertText = mixedCaseKey;
-                  addErrorDetailIf(onError, link.startLine, mixedCaseKey, definition.text, undefined, link.text, range, fixInfo);
+                  addErrorDetailIf(onError, link.startLine, mixedCaseKey, definition.text, undefined, context, range, fixInfo);
                 } else {
-                  addError(onError, link.startLine, undefined, link.text, range);
+                  addError(onError, link.startLine, undefined, context, range);
                 }
               }
             };

lib/md051.js

@@ -94,11 +94,14 @@ module.exports = {
             definition.text.startsWith("#") &&
             !fragments.has(definition.text)
           ) {
+            // eslint-disable-next-line no-undef-init
+            let context = undefined;
             // eslint-disable-next-line no-undef-init
             let range = undefined;
             // eslint-disable-next-line no-undef-init
             let fixInfo = undefined;
             if (link.startLine === link.endLine) {
+              context = link.text;
               range = [ link.startColumn, link.endColumn - link.startColumn ];
               fixInfo = {
                 "editColumn": definition.startColumn,
@@ -117,7 +120,7 @@ module.exports = {
                 mixedCaseKey,
                 definition.text,
                 undefined,
-                link.text,
+                context,
                 range,
                 fixInfo
               );
@@ -126,7 +129,7 @@ module.exports = {
                 onError,
                 link.startLine,
                 undefined,
-                link.text,
+                context,
                 range
               );
             }

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

@@ -23597,8 +23597,7 @@ Generated by [AVA](https://avajs.dev).
           ],
         },
         {
-          errorContext: `[Invalid {MD051}](#multi-line␊
-          "Title")`,
+          errorContext: null,
           errorDetail: null,
           errorRange: null,
           fixInfo: null,
@@ -23667,8 +23666,7 @@ Generated by [AVA](https://avajs.dev).
           ],
         },
         {
-          errorContext: `[Multi-line {MD051}](#NAMEDLINK␊
-          "Title")`,
+          errorContext: null,
           errorDetail: 'Expected: #namedlink; Actual: #NAMEDLINK',
           errorRange: null,
           fixInfo: null,