PS: To help clarify what I am talking about I enclose below an except of the output of this tool

(being used for versioning, error-flagging and linebreak recovery)

=====

got to going away so much, too, and locking me in.

Once he locked me in and was gone three days. It

was dreadful lonesome. I judged he had got

{ drowned, | drownded, } and I wasn't ever going to get out any

more. I was scared. I made up my mind I would

fix up some way to leave there. I had tried to get

out of that cabin many a time, but I couldn't find

no way. There { warn't | wam't } a window to it big enough

for a dog to get through. I couldn't get up the

chimbly; it was too narrow. The door was thick,

solid oak slabs. Pap was pretty careful not to leave

a knife or anything in the cabin when he was away;

I reckon I had { hunted | himted } the place over as much as a

{ hundred | himdred } times; well, I was most all the time at it,

because it was about the only way to put in the time.

But this time I found something at { last ; | last; } I found an

old rusty wood-saw { without | v/ithout } any handle; it was laid

in between a rafter and the clapboards of the roof.

I greased it up and went to work. There was an old

horse-blanket nailed against the logs at the far end

of the cabin behind the table, to keep the wind

from blowing through the chinks and putting the

candle out. I got under the table and raised the

blanket, and went to work to { saw | sav/ } a section of the

big bottom log { out — big | out--big } enough to let me through.

Well, it was a good long job, but I was getting

{ towards | toward } the end of it when I heard pap's gun in the

woods. I got rid of the signs of my work, and

dropped the blanket and hid my saw, and pretty

soon pap come in.

=====

One input file has line breaks that look like this:

…it. I was all over welts.  He got to going away so much, too, and locking

me in.  Once he locked me in and was gone three days.  It was dreadful

lonesome.  I judged he had got drowned, and I wasn't ever going to get…

=====

The other input file has line breaks that look like this:

…got to going away so much, too, and locking me in.

Once he locked me in and was gone three days. It

was dreadful lonesome. I judged he had got…

But it doesn’t matter, the algorithm will still find the word differences.