query: MongoDb $regex not matching special chars
positive_passages.docid: 3965
positive_passages.text: What special characters must be escaped in regular expressions?
negative_passages.docid: 13586
negative_passages.text: Why do regex constructors need to be double escaped?
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negative_passages.text: how to replace special characters with the ones they're based on in PHP?
negative_passages.docid: 94281
negative_passages.text: How can I grep for a string containing regex metacharacters like $ and '?
negative_passages.docid: 4233
negative_passages.text: JavaScript + Unicode regexes
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negative_passages.text: Ruby 1.9: Regular Expressions with unknown input encoding
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negative_passages.text: How do I capture utf-8 decode errors in node.js?
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negative_passages.text: Regular expression to match non-ASCII characters?
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negative_passages.text: RegEx expression not allowing only spaces?
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negative_passages.text: Handling of special LaTeX characters in text
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negative_passages.text: Some special characters not displayed properly in a ǝɯɐuɹǝsn
negative_passages.docid: 61907
negative_passages.text: Right way to escape backslash [ \ ] in PHP regex?
negative_passages.docid: 26682
negative_passages.text: PHP regular expressions: No ending delimiter '^' found in
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negative_passages.text: How does storing the regular expression in a shell variable avoid problems with quoting characters that are special to the shell?
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negative_passages.text: What does "{} \;" mean in the find command?
negative_passages.docid: 1978
negative_passages.text: What to do Regular expression pattern doesn't match anywhere in string?