Regular Expressions 101

Pro

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

1st Alternative\s

\sany whitespace character

2nd Alternative^

^start of line

3rd Alternative\(

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

4th Alternative\[

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1([0-9a-f]{7,40})

Character Class[0-9a-f]{7,40}

{7,40}matches between 7 and 40 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

Non-Capturing Group(?:\s|$|\)|\]|[.,](\s|$))

1st Alternative\s

\sany whitespace character

2nd Alternative$

$end of line

3rd Alternative\)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

4th Alternative\]

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

5th Alternative[.,](\s|$)

Character Class[.,]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 2(\s|$)

1st Alternative\s

\sany whitespace character

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|^|\(|\[)([0-9a-f]{7,40})(?:\s|$|\)|\]|[.,](\s|$))

New

7576e37a65729363370d6672ff6e69e87b68ac5f
x 29363370d66 x
x 29363370d66. x
x 29363370d66.x
x 29363370d66) x
x 29363370d66] x
x 29363370d66, x

7576e37a65729363370d6672ff6e69e87b68ac5f
x 29363370d66 x
x 29363370d66. x
x 29363370d66.x
x 29363370d66) x
x 29363370d66] x
x 29363370d66, x