\2 mean in regular expression
2360
My regex is matching too much. How do I make it stop?
20678
Escape string for use in Javascript regex
141606
How can I recognize an evil regex?
14068
Regular Expressions: Is there an AND operator?
137442
Avoid accidental \\*
154407
What does a "< <(...)" redirection mean?
94281
How can I grep for a string containing regex metacharacters like $ and '?
156132
Finding parenthesis via regular expression
50014
Problems with regex in grep
38456
What are "\" delimiters in box expressions?
140142
How can I replace a backslash with a double backslash using RegExp?
147011
Regular expression for excluding special characters
59646
Do regular expressions from the re module support word boundaries (\b)?
98978
Line break in expression()?
119295
Regular expression to extract special number
119974
What does << mean in Java?
2559
Is there a regular expression to detect a valid regular expression?