Regex to match only uppercase “words” with some exceptions

Question

I have technical strings as the following:

\"The thing P1 must connect to the J236 thing in the Foo position.\"

I would like to match with

Answer 1

Maybe you can run this regex first to see if the line is all caps:

^[A-Z \d\W]+$

That will match only if it's a line like THING P1 MUST CONNECT TO X2.

Otherwise, you should be able to pull out the individual uppercase phrases with this:

[A-Z][A-Z\d]+

That should match "P1" and "J236" in The thing P1 must connect to the J236 thing in the Foo position.