Regular Expressions 101

^start of line

Negative Lookahead(?!.*?(&\||\|&||!&|&!))

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

Group 1(&\||\|&||!&|&!)

1st Alternative&\|

&the literal & (38₁₀ / 46₈ / 26₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

2nd Alternative\|&

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

3rd Alternative

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

4th Alternative!&

!&the literal text !&

5th Alternative&!

&!the literal text &!

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

^(?!.*?(&\||\|&|\(\)|!&|&!))

New

(ABC)&(DFG)|!(ZXC)
!(ABC|DKJ)&VBN - pass
!(ADF&(!&(BER|CTY))|DGH)
!(ABC&DKJ)&|VBN