Regular Expressions 101

hellothe literal text hello (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

this_isthe literal text this_is (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 1([\047"])

Character Class[\047"]

\047the literal ' (47₈ / 39₁₀ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

Group 2((?!\1).|\\.)*

*repeats the group contents below any number of times:

1st Alternative(?!\1).

Negative Lookahead(?!\1)

\1the text saved by group 1

.any character (except for line terminators)

2nd Alternative\\.

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

\1the text saved by group 1

Positive Lookahead(?=\))

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

hello\.this_is\(([\047"])\K((?!\1).|\\.)*\1(?=\))

New

hello.this_is("bla bla bla")
some random text
hello.this_is('hello \'hello')
other stuff
hello.this_is(XhelloX)