Regex 11 metachars: [,?,*,$,^,\,.,+,(,),|
Character classes : [A-Z] matches a single character in range A-Z.
[^A-Z] matches a character that is not in between A and Z.
Metachars in a chearcter class are : [,\,^.- and need to be escaped by \ when try to match themselves.
Character classes : [A-Z] matches a single character in range A-Z.
[^A-Z] matches a character that is not in between A and Z.
Metachars in a chearcter class are : [,\,^.- and need to be escaped by \ when try to match themselves.
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