Today the issue returned when I wanted to trim all the boring lines out of a large log file to leave only the interesting ones. Suddenly (and I don't know why) the answer became obvious ... just use the standard Find and Replace using Regex patterns. So for example, if I want to delete all lines containing the text
Boring Line
I can check the Regular Expression option and use the find pattern ^.*Boring Line.*\r\n
and replace it with nothing (an empty string).This matches from the start of the line (^) to the end of the line including the Windows line terminator characters (\r\n) if it contains the desired string anywhere inside. Then each full matching line is replaced with nothing and is effectively deleted.
In my editor it looks like the following.