Adopts "containsBalancedBrackets" flag from vscode/text-mate.

src/vs/workbench/services/textMate/browser/abstractTextMateService.ts

@@ -133,6 +133,16 @@ export abstract class AbstractTextMateService extends Disposable implements ITex
 						validLanguageId = grammar.language;
 					}
 
+					function asStringArray(array: unknown, defaultValue: string[]): string[] {
+						if (!Array.isArray(array)) {
+							return defaultValue;
+						}
+						if (!array.every(e => typeof e === 'string')) {
+							return defaultValue;
+						}
+						return array;
+					}
+
 					this._grammarDefinitions.push({
 						location: grammarLocation,
 						language: validLanguageId ? validLanguageId : undefined,
@@ -140,6 +150,8 @@ export abstract class AbstractTextMateService extends Disposable implements ITex
 						embeddedLanguages: embeddedLanguages,
 						tokenTypes: tokenTypes,
 						injectTo: grammar.injectTo,
+						balancedBracketSelectors: asStringArray(grammar.balancedBracketScopes, ['*']),
+						unbalancedBracketSelectors: asStringArray(grammar.unbalancedBracketScopes, []),
 					});
 
 					if (validLanguageId) {

src/vs/workbench/services/textMate/browser/textMateWorker.ts

@@ -25,6 +25,8 @@ export interface IValidGrammarDefinitionDTO {
 	embeddedLanguages: IValidEmbeddedLanguagesMap;
 	tokenTypes: IValidTokenTypeMap;
 	injectTo?: string[];
+	balancedBracketSelectors: string[];
+	unbalancedBracketSelectors: string[];
 }
 
 export interface ICreateData {
@@ -143,6 +145,8 @@ export class TextMateWorker {
 				embeddedLanguages: def.embeddedLanguages,
 				tokenTypes: def.tokenTypes,
 				injectTo: def.injectTo,
+				balancedBracketSelectors: def.balancedBracketSelectors,
+				unbalancedBracketSelectors: def.unbalancedBracketSelectors,
 			};
 		});
 		this._grammarFactory = this._loadTMGrammarFactory(grammarDefinitions);