The problem is, that there is no possibility to use newline options within regular expressions doing insource searches using Special:Search. Maybe it's forgotten when programming the regex machine.

Solution: You can use the escape sequence "\n" doing a search with newline within regular expression.

It's useful to find and then repair LINT errors and making other corrections that go beyond one source code line.

Thanks a lot,
Martin ...

Example:

insource:/foo bar\ncode red/

should find in the source code

foo bar
code red