Regular Expressions 101

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/
^..(.[!G)(3w^]|.$|$)|\$\?
/
gm
1st Alternative
^..(.[!G)(3w^]|.$|$)
^ asserts position at start of a line
. matches any character (except for line terminators)
. matches any character (except for line terminators)
1st Capturing Group
(.[!G)(3w^]|.$|$)
1st Alternative
.[!G)(3w^]
. matches any character (except for line terminators)
Match a single character present in the list below
[!G)(3w^]
!G)(3w^ matches a single character in the list !G)(3w^ (case sensitive)
2nd Alternative
.$
.
matches any character (except for line terminators)
{7} matches the previous token exactly 7 times
$ asserts position at the end of a line
3rd Alternative
$
$ asserts position at the end of a line
2nd Alternative
\$\?
\$ matches the character $ literally (case sensitive)
\? matches the character ? 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