Regular Expressions 101

#the literal # (35₁₀ / 43₈ / 23₁₆)

Non-Capturing Group(?:(\w+(?:\s+(?:\w+(?:\s+(?:\w+)?)?)?)?)|(.*)\s#)

1st Alternative(\w+(?:\s+(?:\w+(?:\s+(?:\w+)?)?)?)?)

Group 1(\w+(?:\s+(?:\w+(?:\s+(?:\w+)?)?)?)?)

\w+any word character, repeated at least once

Non-Capturing Group(?:\s+(?:\w+(?:\s+(?:\w+)?)?)?)?

?repeats the group contents below at most once:

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:\w+(?:\s+(?:\w+)?)?)?

?repeats the group contents below at most once:

\w+any word character, repeated at least once

Non-Capturing Group(?:\s+(?:\w+)?)?

?repeats the group contents below at most once:

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:\w+)?

?repeats the group contents below at most once:

\w+any word character, repeated at least once

2nd Alternative(.*)\s#

Group 2(.*)

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

\sany whitespace character

#the literal # (35₁₀ / 43₈ / 23₁₆)

\sany whitespace character

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

#(?:(\w+(?:\s+(?:\w+(?:\s+(?:\w+)?)?)?)?)|(.*)\s#)\s

New

#test1 test2 #test3 test4 test5 #test6 test7 test8 test9 test10#test11 test12 #test13 test14 test15 test16 test17