Regular Expressions 101

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/
ServerConfig="(.*)\b(name=[^\s]+)\b(.*)"|"(.*)\b(name=[^\s]+)?"
/
gm
1st Alternative
ServerConfig="(.*)\b(name=[^\s]+)\b(.*)"
ServerConfig="
matches the characters ServerConfig=" literally (case sensitive)
1st Capturing Group
(.*)
.
matches any character (except for line terminators)
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\b assert position at a word boundary: (^\w|\w$|\W\w|\w\W)
2nd Capturing Group
(name=[^\s]+)
name=
matches the characters name= literally (case sensitive)
Match a single character not present in the list below
[^\s]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
\b assert position at a word boundary: (^\w|\w$|\W\w|\w\W)
3rd Capturing Group
(.*)
.
matches any character (except for line terminators)
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
2nd Alternative
"(.*)\b(name=[^\s]+)?"
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
4th Capturing Group
(.*)
.
matches any character (except for line terminators)
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\b assert position at a word boundary: (^\w|\w$|\W\w|\w\W)
5th Capturing Group
(name=[^\s]+)?
? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)
name=
matches the characters name= literally (case sensitive)
Match a single character not present in the list below
[^\s]
+ 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 ])
" matches the character " with index 3410 (2216 or 428) 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