history substring search a bit too aggressive sometimes

[John Covici <covici@xxxxxxxxxxxxxx>]

Hi.  I am having a very annoying problem properly using history
substring search.  It works great if I do up arrow after typing a
string, it will find a string which is not at the beginning which is
great, but if I type a command line and type a string for file name
completion and hit the tab key, it will find items which don't begin
with that string, but do contain a substring.  Then, more annoying, it
will give me the first file it found as my answer, which I do not
want.

I am using version 5.2 and I have the following in my .zshrc
...
autoload -U compinit
compinit -C
zstyle ':completion:*' completer _complete _match _approximate
zstyle ':completion:*:match:*' original only
zstyle ':completion:*:approximate:*' max-errors 1 numeric
zstyle ':completion:*' squeeze-slashes true
HISTFILE="${ZDOTDIR:-$HOME}/.zhistory"       # The path to the history
file.
HISTSIZE=10000                   # The maximum number of events to
save in the internal history.
SAVEHIST=10000                   # The maximum number of events to
save in the history file.

#
# Options
#

setopt BANG_HIST                 # Treat the '!' character specially
during expansion.
setopt EXTENDED_HISTORY          # Write the history file in the
':start:elapsed;command' format.
setopt INC_APPEND_HISTORY        # Write to the history file
immediately, not when the shell exits.
setopt SHARE_HISTORY             # Share history between all sessions.
setopt HIST_EXPIRE_DUPS_FIRST    # Expire a duplicate event first when
trimming history.
setopt HIST_IGNORE_DUPS          # Do not record an event that was
just recorded again.
setopt HIST_IGNORE_ALL_DUPS      # Delete an old recorded event if a
new event is a duplicate.
setopt HIST_FIND_NO_DUPS         # Do not display a previously found
event.
setopt HIST_IGNORE_SPACE         # Do not record an event starting
with a space.
setopt HIST_SAVE_NO_DUPS         # Do not write a duplicate event to
the history file.
setopt HIST_VERIFY               # Do not execute immediately upon
history expansion.
setopt HIST_BEEP                 # Beep when accessing non-existent
history.
 source ~/zsh-history-substring-search.zsh

I am sure its me as I am rather new at this, so could someone tell me
what I am doing wrong here.

Thanks in advance for any suggestions.

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici@xxxxxxxxxxxxxx