regex - Removing empty lines in Notepad++

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How can I replace empty lines in
Notepad++? I tried a find and replace with the empty lines in the find, and nothing in
the replace, but it did not work; it probably needs regex.

Answer

You need something like a regular
expression.

You have to be in
Extended
mode

If you want all
the lines to end up on a single line use
\r\n. If you want to simply remove
empty lines, use \n\r as @Link
originally suggested.

Replace either expression
with nothing.