query: What special characters must be escaped in regular expressions?
positive_passages.docid: 6448
positive_passages.text: Reference - What does this regex mean?
negative_passages.docid: 28966
negative_passages.text: Is gcc 4.8 or earlier buggy about regular expressions?
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negative_passages.text: HTML escapes appearing in node titles on bespoke content type — substitutions?
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negative_passages.text: How can I escape special HTML characters in JSP?
negative_passages.docid: 52235
negative_passages.text: Case insensitive regular expression without re.compile?
negative_passages.docid: 115183
negative_passages.text: What is the role of an unescaped circumflex or hat character " ^ "?
negative_passages.docid: 114360
negative_passages.text: What do ^ and $ mean in a regular expression?
negative_passages.docid: 38694
negative_passages.text: Ruby 1.9: Regular Expressions with unknown input encoding
negative_passages.docid: 107373
negative_passages.text: Regular expression using '$' sign and '^'
negative_passages.docid: 104414
negative_passages.text: JavaScript regular expressions and sub-matches
negative_passages.docid: 9141
negative_passages.text: Why does my regular expression work in X but not in Y?
negative_passages.docid: 88999
negative_passages.text: Escaped characters in string from submitted form
negative_passages.docid: 137611
negative_passages.text: Regex between tags unless escaped
negative_passages.docid: 113601
negative_passages.text: What is the difference between .*? and .* regular expressions?
negative_passages.docid: 1978
negative_passages.text: What to do Regular expression pattern doesn't match anywhere in string?
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negative_passages.text: Regular expression to extract special number
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negative_passages.text: How to escape  inside  tags