src/vs/workbench/contrib/search/common/searchModel.ts/Match/fullMatchText
class Match:	fullMatchText(includeSurrounding = false): string {
		let thisMatchPreviewLines: string[];
		if (includeSurrounding) {
			thisMatchPreviewLines = this._fullPreviewLines;
		} else {
			thisMatchPreviewLines = this._fullPreviewLines.slice(this._fullPreviewRange.startLineNumber, this._fullPreviewRange.endLineNumber + 1);
			thisMatchPreviewLines[thisMatchPreviewLines.length - 1] = thisMatchPreviewLines[thisMatchPreviewLines.length - 1].slice(0, this._fullPreviewRange.endColumn);
			thisMatchPreviewLines[0] = thisMatchPreviewLines[0].slice(this._fullPreviewRange.startColumn);
		}

		return thisMatchPreviewLines.join('\n');
	}