Suggestion needed for updating .bld file

[CREvans]

That almost does what I need, but I'm actually only looking for a substring of the whole line, so what I actually need is:

Original lines:
ABCDE
FGHIJ
KLMNO

Search for FG

Final lines:
ABCDE
FGHIJ
PQRST
KLMNO

I'm sure I'm just mangling the regexp syntax and there should be an easy solution within the searchandreplace.bld framework that's you've already provided, I'm just not able to figure it out.

Scott