Regular Expressions 101

Pro

Non-Capturing Group(?:$[^()\n]*$ |\[[^][\n]*\] )?

?repeats the group contents below at most once:

1st Alternative$[^()\n]*$

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^()\n]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\na line-feed (newline) character (ASCII 10)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative\[[^][\n]*\]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Negated Character Class[^][\n]*

*matches any number of characters outside the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\na line-feed (newline) character (ASCII 10)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 1(.+)

.+any Unicode character (except for line terminators), repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2([0-9]{4})

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

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

\ba Unicode word boundary

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

(?:\([^()\n]*\) |\[[^][\n]*\] )?(.+) ([0-9]{4})\b

New

[someword] This Is My Name 2010
This Is My Name 2010
(someword) This Is My Name 2010