Regular Expressions 101

Group 1([\w]+)

Character Class[\w]+

+matches at least one character from the set below:

\wa Unicode word character

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 2(.*?)

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

Non-Capturing Group(?:, (.*?))*

*repeats the group contents below any number of times:

, the literal text ,

Group 3(.*?)

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

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

$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.

25 tokens

Regular Expression

([\w]+)\((.*?)(?:, (.*?))*\)$

New

foo(bar(2,'a'), bas())
foo(bar(2,'a'))
foo(bar(2,'a'), bas(), foobar('bas'))

foo(bar(2,'a'), bas())
foo(bar(2,'a'))
foo(bar(2,'a'), bas(), foobar('bas'))