query: Why this positive lookahead regex 'string.*?(?= )' doesn't work in sed?
positive_passages.docid: 18491
positive_passages.text: Are there zero-width assertions in sed?
negative_passages.docid: 124765
negative_passages.text: How does bash interpret the equal operator with no surrounding spaces in a conditional?
negative_passages.docid: 86283
negative_passages.text: Sed - unknown option to `s'
negative_passages.docid: 52535
negative_passages.text: using sed with ampersand (&)
negative_passages.docid: 322
negative_passages.text: clear meaning of .* in regex
negative_passages.docid: 54640
negative_passages.text: How to insert strings containing slashes with sed?
negative_passages.docid: 114438
negative_passages.text: Explanation of Lookaheads in This Regular Expression
negative_passages.docid: 113604
negative_passages.text: Why does this regex with no special character match a longer string?
negative_passages.docid: 51287
negative_passages.text: Conditionally replace regex matches in string
negative_passages.docid: 30421
negative_passages.text: Escape a string for a sed replace pattern
negative_passages.docid: 126690
negative_passages.text: sed search and replace with variable containing slash
negative_passages.docid: 133393
negative_passages.text: How can I replace a newline with sed?
negative_passages.docid: 88942
negative_passages.text: Notepad++ regex backreference doesn't seem to work
negative_passages.docid: 92181
negative_passages.text: Search and replace a pattern containing backslashes
negative_passages.docid: 42283
negative_passages.text: Using sed with special characters
negative_passages.docid: 12642
negative_passages.text: sed command not giving proper output for regular expression used
negative_passages.docid: 427
negative_passages.text: Why does a RegExp with global flag give wrong results?