Add explicit "inherit" setting for fragments links (microsoft#162231)

Fixes microsoft#162129

Author: mjbvz

extensions/markdown-language-features/package.json

@@ -477,8 +477,9 @@
           "type": "string",
           "scope": "resource",
           "markdownDescription": "%configuration.markdown.validate.fileLinks.markdownFragmentLinks.description%",
-          "default": "ignore",
+          "default": "inherit",
           "enum": [
+            "inherit",
             "ignore",
             "warning",
             "error"

extensions/markdown-language-features/server/README.md

@@ -64,7 +64,7 @@ The server supports the following settings:
 			- `enabled` — Enable/disable validation of links to fragments in the current files: `[text](#head)`
 		- `fileLinks`
 			- `enabled` — Enable/disable validation of links to file in the workspace.
-			- `markdownFragmentLinks` — Enable/disable validation of links to headers in other Markdown files.
+			- `markdownFragmentLinks` — Enable/disable validation of links to headers in other Markdown files. Use `inherit` to inherit the `fragmentLinks` setting.
 		- `ignoredLinks` — Array of glob patterns for files that should not be validated.
 
 ### Custom requests

extensions/markdown-language-features/server/src/configuration.ts

@@ -26,7 +26,7 @@ interface Settings {
 			};
 			readonly fileLinks: {
 				readonly enabled: ValidateEnabled;
-				readonly markdownFragmentLinks: ValidateEnabled;
+				readonly markdownFragmentLinks: ValidateEnabled | 'inherit';
 			};
 			readonly ignoredLinks: readonly string[];
 		};

extensions/markdown-language-features/server/src/languageFeatures/diagnostics.ts

@@ -33,11 +33,12 @@ function getDiagnosticsOptions(config: ConfigurationManager): md.DiagnosticOptio
 		return defaultDiagnosticOptions;
 	}
 
+	const validateFragmentLinks = convertDiagnosticLevel(settings.markdown.validate.fragmentLinks.enabled);
 	return {
 		validateFileLinks: convertDiagnosticLevel(settings.markdown.validate.fileLinks.enabled),
 		validateReferences: convertDiagnosticLevel(settings.markdown.validate.referenceLinks.enabled),
-		validateFragmentLinks: convertDiagnosticLevel(settings.markdown.validate.fragmentLinks.enabled),
-		validateMarkdownFileLinkFragments: convertDiagnosticLevel(settings.markdown.validate.fileLinks.markdownFragmentLinks),
+		validateFragmentLinks,
+		validateMarkdownFileLinkFragments: settings.markdown.validate.fileLinks.markdownFragmentLinks === 'inherit' ? validateFragmentLinks : convertDiagnosticLevel(settings.markdown.validate.fileLinks.markdownFragmentLinks),
 		ignoreLinks: settings.markdown.validate.ignoredLinks,
 	};
 }