query: regex for string is confusing
positive_passages.docid: 1388
positive_passages.text: Learning Regular Expressions
negative_passages.docid: 322
negative_passages.text: clear meaning of .* in regex
negative_passages.docid: 129301
negative_passages.text: Need to perform Wildcard (*,?, etc) search on a string using Regex
negative_passages.docid: 83008
negative_passages.text: RegEx with multiple groups?
negative_passages.docid: 84913
negative_passages.text: How to "inverse match" with regex?
negative_passages.docid: 37942
negative_passages.text: javascript regex split produces too many items
negative_passages.docid: 90532
negative_passages.text: Regex matches but shouldn't
negative_passages.docid: 134825
negative_passages.text: How do I remove letters and dashes and dollar signs in a string using a regular expression?
negative_passages.docid: 61451
negative_passages.text: Interesting test of Javascript RegExp
negative_passages.docid: 60000
negative_passages.text: Regex to match string containing two names in any order
negative_passages.docid: 57153
negative_passages.text: String.split() *not* on regular expression?
negative_passages.docid: 41380
negative_passages.text: How to check if a given Regex is valid?
negative_passages.docid: 131388
negative_passages.text: using regex for math expressions in java?
negative_passages.docid: 78395
negative_passages.text: Checking whole string with a regex
negative_passages.docid: 50014
negative_passages.text: Problems with regex in grep
negative_passages.docid: 70885
negative_passages.text: Regex for quoted string with escaping quotes
negative_passages.docid: 125564
negative_passages.text: PHP regex delimiter, what's the point?