Techie Brains

@"(?:\s*('|\")+\s*)"

(?:\\s*[\\"\\']\\s*)

find more solutions at

http://stackoverflow.com/questions/15200835/regex-find-at-least-one-of-two-characters



http://stackoverflow.com/questions/1195665/regex-for-alphanumeric-password-with-at-least-1-number-and-character

http://stackoverflow.com/questions/2145651/combining-these-two-regular-expressions-into-one