I'm trying to parse a standard diff of some sql files to return only the delete sections. I have been using grep with the after context (-A) which almost works (only because I know that delete sections will all be very short). e.g.
diff $$_$1.sql $$_$2.sql|egrep -A3 "d"
I am thinking that with AWK, I could tell it start at (the above regex) and stop at the first line starting with a digit or the first line ending with a --
I have played around a bit, but can't seem to find the right syntax to do this. Can this be done with AWK? or is there another tool I should use?