Validates any border-style value that contains 0-4 (valid) border styles. Only restriction on whitespace is at least one space/tab between values—all of the examples below are valid: "solid" "solid none" "none none solid"...

Simple regex to extract some chat conversation

Complex address component capturing regex

MBUS regex, with updated speed

Best guess of e-mail -- using edq

Best guess of e-mail

Rules for Mexico: Numbers must be 10 digits long Area code is either 2 or 3 digits Remaining phone number has either 7 or 8 digits in groups of 3 or 4