Regular Expressions 101

Pro

1st Alternative((?<!__)aaa)

Group 1((?<!__)aaa)

Negative Lookbehind(?<!__)

__the literal text __

aaathe literal text aaa (case insensitive)

2nd Alternative(bbb(?!==))

Group 2(bbb(?!==))

bbbthe literal text bbb (case insensitive)

Negative Lookahead(?!==)

==the literal text ==

3rd Alternative((?<!#)ccc(?!==))

Group 3((?<!#)ccc(?!==))

Negative Lookbehind(?<!#)

#the literal # (35₁₀ / 43₈ / 23₁₆)

cccthe literal text ccc (case insensitive)

Negative Lookahead(?!==)

==the literal text ==

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.

25 tokens

((?<!__)aaa)|(bbb(?!==))|((?<!#)ccc(?!==))

New

aaa
__aa
__aaa
-aaa--yyy
bbb
bbb--
-bbb==
bbb==
cc
ccc
ccccccccc
#ccc==
#ccc
#ccc--	
aaacccbbb--

aaa
__aa
__aaa
-aaa--yyy
bbb
bbb--
-bbb==
bbb==
cc
ccc
ccccccccc
#ccc==
#ccc
#ccc--	
aaacccbbb--