Regular Expression (Regex) Reserved Characters

The following characters are reserved (special) in regular expressions and must be escaped with a backslash (\) to be matched literally:

• . (dot)
• ^ (caret)
• $ (dollar sign)
• * (asterisk)
• + (plus sign)
• ? (question mark)
• { (opening curly brace)
• } (closing curly brace)
• [ (opening square bracket)
• ] (closing square bracket)
• ( (opening parenthesis)
• ) (closing parenthesis)
• | (vertical bar/pipe)
• \ (backslash)