regex101: Remove Empty Lines From TXT Document

Pro

^start of line

Non-Capturing Group(?:[\t ]*(?:\r?\n|\r))+

+repeats the group contents below at least once:

Character Class[\t ]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:\r?\n|\r)

1st Alternative\r?\n

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

2nd Alternative\r

\ra carriage return (ASCII 13)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

26 tokens

Regular Expression

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

New

TITLE ---
=========


Ergo Proxy Sinus Putrid A.D.2049
§ - Chapter 01



Textum Receptus 
Holy [link](https://www.unicode.org/index.html)

Image 01-
..
Image 09

§§°ç^?
 § - Chapter 2 %&&&

End.
Loigismo Amonitus Heracleion
Poltrer Hegheist Lotrar Ultreum




Unicus Scribus """!€*ù7n
Olk/6

//n

Extraction

TITLE ---
=========


Ergo Proxy Sinus Putrid A.D.2049
§ - Chapter 01



Textum Receptus 
Holy [link](https://www.unicode.org/index.html)

Image 01-
..
Image 09

§§°ç^?
 § - Chapter 2 %&&&

End.
Loigismo Amonitus Heracleion
Poltrer Hegheist Lotrar Ultreum




Unicus Scribus """!€*ù7n
Olk/6

//n