2 lines
601 B
Plaintext
2 lines
601 B
Plaintext
Using reluctant quantifiers (also known as lazy or non-greedy quantifiers) in patterns can often lead to needless backtracking, making the regex needlessly inefficient and potentially vulnerable to https://www.regular-expressions.info/catastrophic.html[catastrophic backtracking]. Particularly when using ``++.*?++`` or ``++.+?++`` to match anything up to some terminating character, it is usually a better idea to instead use a greedily or possessively quantified negated character class containing the terminating character. For example ``++<.+?>++`` should be replaced with ``<[^>]{plus}{plus}>``.
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