Regular Expressions 101

^start of line

Group flag(?<flag>#+)

#+the literal # (35₁₀ / 43₈ / 23₁₆) , repeated at least once

\s*any whitespace character, repeated any number of times

Group content(?<content>.*?)

.*?any character (except for line terminators), repeated any number of times

\s*any whitespace character, repeated any number of times

$end of line

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^(?<flag>#+)\s*(?<content>.*?)\s*$

New

#  The quick brown (1) 
## fox jumps (1a)
###over (1a1)
###the (1a2)
## lazy dog (1b)
# Foo bar (2)
# Baz biz (3)
##buzz (3a)  
##booz (3b)  
# Lorem ipsum (4)
##

Regular Expression

Substitution