parser can't decide on "\!" vs. "!" in file rule

[Christian Boltz]

/t { /foo\!bar r, }

results in a warning:
    Warning from pr (pr line 2): Character ! was quoted unnecessarily, dropped preceding quote ('\') character

OK, so let's remove the superfluous backslash:

/t { /foo!bar r, }

Now the parser gives me:

    AppArmor parser error for pr in pr at line 1: Found unexpected character: '!'

(tested with the 2.11 parser, the profile was saved in the file "pr")