src/vs/workbench/services/textMate/browser/abstractTextMateService.ts/TMTokenizationSupportWithLineLimit/tokenizeEncoded
class TMTokenizationSupportWithLineLimit:	tokenizeEncoded(line: string, hasEOL: boolean, state: StackElement): EncodedTokenizationResult {
		// Do not attempt to tokenize if a line is too long
		if (line.length >= this._maxTokenizationLineLength) {
			return nullTokenizeEncoded(this._encodedLanguageId, state);
		}

		return this._actual.tokenizeEncoded(line, hasEOL, state);
	}