src/vs/workbench/contrib/markers/browser/markersFilterOptions.ts/FilterOptions/setPattern
class FilterOptions:	private setPattern(expression: IExpression, pattern: string) {
		if (pattern[0] === '.') {
			pattern = '*' + pattern; // convert ".js" to "*.js"
		}
		expression[`**/${pattern}/**`] = true;
		expression[`**/${pattern}`] = true;
	}