remove all blank lines using regular expressions

remove blank lines regex.md

REGEX remove blank lines:

FROM: http://www.ultraedit.com/support/tutorials_power_tips/ultraedit/remove_blank_lines.html

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FIND:

^(?:[\t ]*(?:\r?\n|\r))+

REPLACE:

[LEAVE THIS EMPTY BECAUSE YOU DO NOT WANT TO REPLACE WITH ANYTHING]

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(Related: If you happen to be where you can use AWK, you can use awk NF.)