MFC r274924, r274936:

MFC r274924, r274936:

  Consider the negation operator (!) to be a word even if it is not followed
  by whitespace.  This allows "optional !foo" which is what most programmers
  are naturally going to tend to do as opposed to "optional ! foo".

  Fix the negation (!) operator so that it binds only to the word that
  immediately follows it.

git-svn-id: svn://svn.freebsd.org/base/stable/10@276280 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f