regex-lookarounds Examples and Free Source Code

Negative look ahead matching when it should not match...

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How to separate a string with 2 uppercases and a space with regex in pandas dataframe?...

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Regex match "_" char only if it isn't in a username...

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How to exclude matched group after a non-matched group - regex...

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What's wrong with my lookahead regex in GNU sed?...

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Translate C# regex with lookbehinds to C++...

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Negative lookahead not working after character range with plus quantifier...

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RegEx to exclude particular words...

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My negative lookahead is not working - why?...

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Negating duplicate words pattern...

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Regex match a function if only if it contains a specific variable...

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RegEx - match specific html tags between other tag...

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Regex match with negative lookbehind, recursive pattern and negative lookahead...

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How to negate a substring only in a certain section of the string with regex?...

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postfix header_checks fails for no reason with ! (not operator)...

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Regex Negative Lookbehind ignored...

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Regex - Negative Lookahead to match a string with any non-Chinese UTF characters...

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PHP preg_match fails even though regex pattern is present...

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How can we match a^n b^n?...

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Filter out words depending on surrounding punctuation...

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Splitting digits into groups of threes, from right to left using regular expressions...

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Regex to ignore multiple prefixes and match only if they dont have one or two specific hardcoded att...

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Regex With Lookahead For Fixed Length String...

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Regex only capture first match...

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return nth match from string using regex...

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How to test if a string doesn't contain BOTH of two given substrings?...

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How to match a pattern after a pattern in regex, using groups, negations, lookarounds...

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Handle initials in Postgresql...

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I am finding an email from from a given string and returning the email that exists in the string...

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Regex match full paragraph block when it contains a string inside it...

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