RegEx question: how to search for white space repetitions (1 tab and 1 new line)

@ccstone Yep, I was suggesting four separate actions.

I agree that the regex can be incorporated into the awk command most of the time, but since the built-in awk has a less powerful RE engine than pcregrep, it took me more work to set up the RE in awk if I needed a lot of escape characters. By splitting into grep+awk, I can use grep or pcregrep first depending on the data. YMMV