I'm not the OP, but I think it's pretty clear the OP wants to extract the lines 

FOO: Example header 1 
FOO: a 
FOO: Header 2 example 
FOO: Testing header item with some stuff in

[download]
The non-greedy .+? also hints in this direction (though non-greediness is not required here, unless you're using /s).

In reply to Re^4: m modifier not doing what I'm expecting? by Anonymous Monk
in thread m modifier not doing what I'm expecting? by ultranerds

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