Fix line splitting in greppable
Fix line splitting in greppable

This effectively reverts 422f0d158a0671e18e6feaad11fc841e2183c6e7.
Not sure what I was thinking.

Unfortunately, it turns out that git will match pdf files even
with -I, so the output often includes binary garbage which breaks
markdown output. Not sure how to fix that yet.

MasterDuke17/whateverable,perl6/whateverable,perl6/whateverable,perl6/whateverable