This is a test case where fmt fails by inserting spaces it shouldn't:
---cut 9 lines---
Then I had problems getting enough wood for the Ark, because of the ban
on native logging on the West Coast. They tried to get me to use Fijian
Jara but I couldn't get the necessary dispensation from Customs &
Excise to import timber from a Pacific Island nation that wasn't party
to the international working party on the life cycle of native timbers.
I finally convinced DoC that I needed the wood to indirectly save the
kakapo from extinction which seemed to get a bit of a reaction,
however, the Royal Forest and Bird Society objected and won't let me
catch any kakapo. No kakapo. No wood.
---cut---
output:
---cut---
Then I had problems getting enough wood for the Ark, because of the
ban on native logging on the West Coast. They tried to get me to
use Fijian Jara but I couldn't get the necessary dispensation from
Customs & Excise to import timber from a Pacific Island nation that
wasn't party to the international working party on the life cycle of
native timbers. I finally convinced DoC that I needed the wood to
indirectly save the kakapo from extinction which seemed to get a bit
of a reaction, however, the Royal Forest and Bird Society objected
and won't let me catch any kakapo. No kakapo. No wood.
---cut---
fmt -w72 produces 2 spaces here: "timbers. I finally"
The same happens with fmt -w72 -u (where I would expect it).
> fmt --version
fmt (GNU textutils) 2.0
Written by Ross Paterson.
Volker