why does this regex lead to catastrophic backtracking?
759
How do I match any character across multiple lines in a regular expression?
100884
Getting the pattern back from a compiled re?
1805
Do Python regexes support something like Perl's \G?
97125
When does preg_match(): Unknown modifier error occur?
43475
How can I concatenate regex literals in JavaScript?
97285
More general pattern fails to match everything the more specific pattern does.
748
What do 'lazy' and 'greedy' mean in the context of regular expressions?
125038
What is a "Nested Quantifier" and why is it causing my regex to fail?
6448
Reference - What does this regex mean?
32635
Handling backreferences to capturing groups in re.sub replacement pattern
28966
Is gcc 4.8 or earlier buggy about regular expressions?
114438
Explanation of Lookaheads in This Regular Expression
90532
Regex matches but shouldn't
7288
Handling multiple regex matches in Ampscript
63332
How can one represent a string pattern with prohibited substrings?
64366
Matching an optional substring in a regex
88430
Using RegEx to balance match parenthesis