!; is interpreted as an history expansion that can never match anything

[Emanuele Torre]

! followed by a ; or another terminator  is interpreted as an history
expansion with no pattern that can never match anything.

  $ !; echo hi
  bash: !: event not found
  $ !&& echo hi
  bash: !: event not found

It should not be intepreted as a history expansion that cannot possibly
match anything; it should work the same it works if there is a space
after `!', or if histexpand is off.

  $ ! ; echo "$?" hi
  1 hi
  $ ! && echo hi
  bash: syntax error near unexpected token `&&'

o/
 emanuele6