Here is my regex:
STATICSTRING\s[a-zA-Z]:\\[\\\S|*\S]?.*$|STATICSTRING\s\w*
as you can see there are two patterns, \s[a-zA-Z]:\\[\\\S|*\S]?.*$ and \s\w* which is combined with a | operator. and the STATICSTRING is repeated in each one.
Is there any way to write STATICSTRING once?
You may use an | alternation operator in a grouping construct to group two subpatterns:
STATICSTRING\s(?:[a-zA-Z]:\\[\\\S|*\S]?.*$|\w*)
^^^ ^ ^
However, the \\[\\\S|*\S]?.* part looks like a user error. It matches a \, then 1 or 0 occurrences of \, |, * or any non-whitespace char, and then .* matches any 0+ chars up to the end of the line. Make sure you fix it if you intended to match anything else. But \w* branch will always "win" as it always matches (either an empty string or a letter (and [a-zA-Z] also matches a letter)). So, the pattern above is equal to STATICSTRING\s\w*.
[a-zA-Z]:\\[\\\S|*\S]?.*$ = [a-zA-Z]:\\\S.*$, and it matches a letter, :\, then any char other than whitespace and then any 0+ chars to the end of the line. No, it is not.[a-zA-Z]:(?:\\[^\/]+)*\\.*?\.\S+ or even [a-zA-Z]:\\.*?\.\S+ but no one guarantees that it won't over-match in case there is a no-match and a match on a single line.
|and a grouping construct:STATICSTRING\s(?:[a-zA-Z]:\\[\\\S|*\S]?.*$|\w*). However,\\[\\\S|*\S]?.*looks too suspicious. What should it match?