src/vs/editor/common/cursor/cursorTypeOperations.ts/TypeOperations/_shouldSurroundChar
class TypeOperations:	private static _shouldSurroundChar(config: CursorConfiguration, ch: string): boolean {
		if (isQuote(ch)) {
			return (config.autoSurround === 'quotes' || config.autoSurround === 'languageDefined');
		} else {
			// Character is a bracket
			return (config.autoSurround === 'brackets' || config.autoSurround === 'languageDefined');
		}
	}