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Regular Expression Details

Title Test Find Non-blank contiguous lines
Expression
(^(?=.*\S).*\n)*
Description
This expression bypasses an infinite-backtracking bug by looking ahead in the current line for any non-whitespace, then matching to the end of the line if the lookahead was positive. Without the lookahead, you'll end up with an infinine backtracking expression and a bad day.
Matches
\tabc\n xyz
Non-Matches
\ \t\n\ \n\n
Author Rating: Not yet rated. Eric Falsken
Source
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