Regular Expressions 101

Pro

Non-Capturing Group(?:^|[(\s[])

1st Alternative^

^start of line

2nd Alternative[(\s[]

Character Class[(\s[]

(the literal ( (40₁₀ / 50₈ / 28₁₆)

\sa Unicode whitespace character

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1(\d+(?:[.,]0+(?!\d))?)

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:[.,]0+(?!\d))?

?repeats the group contents below at most once:

Character Class[.,]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

0+the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated at least once

Negative Lookahead(?!\d)

\da Unicode decimal digit

Positive Lookahead(?=[]\s)]|$)

1st Alternative[]\s)]

Character Class[]\s)]

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\sa Unicode whitespace character

)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative$

$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

(?:^|[(\s[])(\d+(?:[.,]0+(?!\d))?)(?=[]\s)]|$)

New

2 2.0
Test (2.00001) Test (2.000) Test 2.1 Test (2,0001) Test 2,000 Test 2,1000 test 2

2 2.0
Test (2.00001) Test (2.000) Test 2.1 Test (2,0001) Test 2,000 Test 2,1000 test 2