Reply to message «Re: Suffix alias for README files», 
sent 21:25:43 20 April 2011, Wednesday
by John Eikenberry:

> Is there any way to get either of these to work without changing the
> command that is stored in history? So the history contains
> '/some/path/README' and not 'less /some/path/README'?
Yes, of course. I personally use the following code:
    function zshaddhistory()
    {
        emulate -L zsh
        if ! [[ -z "${_HISTLINE}" ]] ; then
            print -sr -- "${_HISTLINE}"
            unset _HISTLINE
        else
            print -sr -- "${1%%$'\n'}"
        fi
        fc -p
    }
With this function if you set variable _HISTLINE somewhere before zshaddhistory 
hook is run then contents of _HISTLINE will be put into the history. Widget 
accept-line is called before zshaddhistory.
Here is where I actually use _HISTLINE (with just the same purpose: execute one 
command, but add to history another):

    function _-accept-line()
    {
        emulate -L zsh
        local -r autopushd=${options[autopushd]}
        options[autopushd]=off
        cd $PWD || cd
        options[autopushd]=$autopushd
        if [[ ${BUFFER[1,3]} == ":h " ]] ; then
            _HISTLINE=$BUFFER
            BUFFER=":h ${(q)BUFFER[4,-1]}"
        elif [[ ${BUFFER[1,4]} == "zmw " ]] ; then
            _HISTLINE=$BUFFER
            BUFFER="zmw "${(j. .)${(q)${(z)BUFFER[5,-1]}}}
        fi
        zle .accept-line
    }


Original message:
> Bart Schaefer wrote:
> > > I can use suffix aliases to display various .txt files.
> > > Can I do a similar thing for README files? So the "command"
> > > 
> > > 	/some/path/README
> > > 
> > > will really run the command
> > > 
> > > 	less /some/path/README
> > 
> > Depending on your version of zsh, you can do this either with the
> > zle-line-finish widget or by replacing the accept-line widget.
> > 
> > zle-line-finish() {
> > 
> >     setopt localoptions extendedglob
> >     if [[ -z "$PREBUFFER" && "$BUFFER" = ([^[:space:]]#/)#README ]]
> >     then BUFFER="less $BUFFER"
> >     fi
> > 
> > }
> > zle -N zle-line-finish
> > 
> > Or
> > 
> > accept-line() {
> > 
> >     setopt localoptions extendedglob
> >     if [[ -z "$PREBUFFER" && "$BUFFER" = ([^[:space:]]#/)#README ]]
> >     then BUFFER="less $BUFFER"
> >     fi
> >     zle .accept-line "$@"
> > 
> > }
> > zle -N accept-line
> 
> Is there any way to get either of these to work without changing the
> command that is stored in history? So the history contains
> '/some/path/README' and not 'less /some/path/README'?