small history bugs in zsh 3.1.9

[greg@xxxxxxxxxxxxxx (Greg Klanderman)]

Hi all you zsh wizards,

with no .zshenv file, if "history" is the first command it is listed
in the history:

    [~] phl| /phl/build/zsh-3.1.9/Src/zsh
    phl% history
        1  history
    phl% 

if it is the second command you get an error:

    [~] phl| /phl/build/zsh-3.1.9/Src/zsh
    phl% pwd
    /home/greg
    phl% history
    fc: no such event: 1
    phl% 

otherwise, it is not listed:

    [~] phl| /phl/build/zsh-3.1.9/Src/zsh
    phl% pwd
    /home/greg
    phl% echo foo
    foo
    phl% history
        1  pwd
        2  echo foo
    phl% 

also, there is a bad interaction with precmd.  if .zshenv is:

    reload () {
      precmd () {
        unset -f precmd
        source ~/.zshenv
      }
    }

and you start zsh and execute:

    phl% pwd
    /home/greg
    phl% cd
    phl% reload
    phl% pwd
    /home/greg
    phl% echo foo
    foo
    phl% history
        1  pwd
        2  cd
        3  reload
        4  echo foo
    phl% 

notice that the command after "reload" does not make it into the
history.

these problems didn't exist in 3.1.6.

many thanks for all your hard work,
Greg

greg@xxxxxxxxxxxxxx