query: regex group reference error
positive_passages.docid: 69585
positive_passages.text: python re.sub group: number after \number
negative_passages.docid: 75217
negative_passages.text: Replace (parsing "\" illegal at end of pattern)
negative_passages.docid: 148456
negative_passages.text: Regex to remove duplicate letters
negative_passages.docid: 26784
negative_passages.text: JavaScript RegExp objects
negative_passages.docid: 7288
negative_passages.text: Handling multiple regex matches in Ampscript
negative_passages.docid: 53523
negative_passages.text: How to use regex in string in java?
negative_passages.docid: 90532
negative_passages.text: Regex matches but shouldn't
negative_passages.docid: 52449
negative_passages.text: Java RegEx meta character (.) and ordinary dot?
negative_passages.docid: 1805
negative_passages.text: Do Python regexes support something like Perl's \G?
negative_passages.docid: 70340
negative_passages.text: Regular expression to skip character in capture group
negative_passages.docid: 1814
negative_passages.text: How do you access the matched groups in a JavaScript regular expression?
negative_passages.docid: 88942
negative_passages.text: Notepad++ regex backreference doesn't seem to work
negative_passages.docid: 30628
negative_passages.text: Overlapping matches in Regex
negative_passages.docid: 41380
negative_passages.text: How to check if a given Regex is valid?
negative_passages.docid: 43475
negative_passages.text: How can I concatenate regex literals in JavaScript?
negative_passages.docid: 150965
negative_passages.text: RegEx expression not allowing only spaces?
negative_passages.docid: 155161
negative_passages.text: Regex misspellings