On 5/13/06, April Chin <April.Chin at eng.sun.com> wrote:
>
> > Date: Wed, 10 May 2006 02:04:43 +0200
> > From: Roland Mainz <roland.mainz at nrubsig.org>
> > X-Accept-Language: en
> > MIME-Version: 1.0
> > To: ast-users <ast-users at research.att.com>, ksh93-integration-discuss
> <ksh93-integration-discuss at opensolaris.org>
> > CC: April Chin <April.Chin at eng.sun.com>
> > Subject: TAB-TAB completion patch #003 (which makes "gmacs" the default
> > editor
> mode) / was: Re: [ast-users] RFE: Make TAB completion in ksh93 work like
> ESC-'='...
> > X-ID: bdlyZiZVgeQfjihegvdcB-pJpVfmTpdkH6+Yts17ykwPkDhPYb6toN at t-dialin.net
> > X-TOI-MSGID: 051d1a0f-4cc6-46b2-9ecf-b91e8d0a7e4c
> >
> > Roland Mainz wrote:
> > > Roland Mainz wrote:
> > > > Attached is a small patch ("ksh93_tab_completion_choice.diff.txt" ;
> > > > relative to the current Solaris OS/Net tree, but it should apply to
> > > > ksh93r cleanly, too) which may be usefull for integration into ksh93r+.
> > > >
> > > > The patch changes the behaviour of the TAB completion in emacs mode to
> > > > preview a list of choices (e.g. equilavent to ESC-'=') instead of doing
> > > > the completion itself which may be much more usefull when many file name
> > > > are matching the given pattern (it also contains a comment how to make
> > > > it slightly "better", however I am not sure (yet) how this can be done
> > > > easily).
> > > >
> > > > Little bit testing with our students showed that they like it more than
> > > > the current TAB completion... :-)
> > > >
> > > > Basically the patch is equivalent to
> > > > -- snip --
> > > > function emacs_completion
> > > > {
> > > > if [[ ${.sh.edchar} == "$(printf "\t")" ]] then
> > > > .sh.edchar="$(printf "\E=")"
> > > > true
> > > > fi
> > > > }
> > > >
> > > > trap emacs_completion KEYBD
> > > > -- snip --
> > >
> > > Actually it could be done better... attached is a 2nd patch
> > > ("ksh93_tab_tab_gmacs_completion_try2.diff.txt") which also implements
> > > TAB-TAB completion like in bash3.
> > > Single TAB now completes the filename either completely - or if that
> > > isn't possible it's completed to the point where the filenames start to
> > > differ. TAB-TAB then displays a list of choices. Additionally in "gmacs"
> > > mode typing TAB on an empty string will try to do the filename
> > > completion for the whole directory (and TAB-TAB displays all choices
> > > then). "emacs" mode still behaves as usual, incl. the ability to enter
> > > the TAB character.
> > > (note: the previous patch was tested for ~~one week, the current one is
> > > more or less untested) ...
> >
> > Attached is now the 3rd version... the only difference to the previous
> > patch is that I added a way to provide a default editor mode (set to
> > "gmacs" for the initial ksh93-integration (and to aid the migration of
> > bash2/3 users to ksh93)). Basically it is an equivalent to the following
> > ksh93 shell code:
> > -- snip --
> > emacs_completion_tab_count=0
> >
> > function emacs_completion
> > {
> > if [[ ${.sh.edchar} == "$(printf "\t")" ]] then
> > emacs_completion_tab_count=$((emacs_completion_tab_count + 1))
> >
> > if [ $emacs_completion_tab_count -eq 1 ] ; then
> > .sh.edchar="$(printf "\E\E")"
> > elif [ $emacs_completion_tab_count -ge 2 ] ; then
> > .sh.edchar="$(printf "\E=")"
> > fi
> > else
> > emacs_completion_tab_count=0
> > fi
> > }
> >
> > trap emacs_completion KEYBD
> > set -o gmacs
> > -- snip --
> >
> > David/April: Are there any objections of making the "gmacs" editor mode
> > the "default" for both Solaris (for both "ksh93r+" and
> > ksh93-integration) and Linux ?
>
> Solaris ksh also does not have a default editor mode if
> VISUAL and EDITOR are not set. A default seems like a good idea.
> Is there any reason for gmacs over emacs or vi mode?
emacs is *MUCH* easier to learn than vi. I never really used gnacs mode...
Irek
