% pandoc --abbreviations=command/abbrevs -t native
Foo. bar baz h.k. and e.g. and Mr. Brown.
^D
[Para [Str "Foo.\160bar",Space,Str "baz",Space,Str "h.k.\160and",Space,Str "e.g.",Space,Str "and",Space,Str "Mr.",Space,Str "Brown."]]

% pandoc -t native
Foo. bar baz h.k. and e.g. and Mr. Brown.
^D
[Para [Str "Foo.",Space,Str "bar",Space,Str "baz",Space,Str "h.k.",Space,Str "and",Space,Str "e.g.\160and",Space,Str "Mr.\160Brown."]]