help should check 2nd ... args

[Dan Jacobson]

$ help : !
:: :
    No effect; the command does nothing.  A zero exit code is returned.
What about that second argument?

$ help !
bash: help: no help topics match `!'.  Try `help help' or `man -k !' or `info 
!'.

Regarding RESERVED WORDS
$ set ! case do done elif else esac fi for function \
   if in select then until while { } time [[ ]]
$ for i do help >&- 2>&- $i||e=$i\ $e; done
$ echo $e
]] } then in fi esac else elif done do !

OK, but ! perhaps should have a blurb.