Regular Expressions 101

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/
([A-Z]\w+\s[A-Z](?:[\w.\s]+))\s\(([A-Z.]+)\)
/
gm
1st Capturing Group
([A-Z]\w+\s[A-Z](?:[\w.\s]+))
Match a single character present in the list below
[A-Z]
A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)
\w
matches any word character (equivalent to [a-zA-Z0-9_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
Match a single character present in the list below
[A-Z]
A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)
Non-capturing group
(?:[\w.\s]+)
Match a single character present in the list below
[\w.\s]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\w matches any word character (equivalent to [a-zA-Z0-9_])
. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
\( matches the character ( with index 4010 (2816 or 508) literally (case sensitive)
2nd Capturing Group
([A-Z.]+)
Match a single character present in the list below
[A-Z.]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
A-Z matches a single character in the range between A (index 65) and Z (index 90) (case sensitive)
. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
\) matches the character ) with index 4110 (2916 or 518) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gm

Test String