[ESS] file name completion again

[Martin Maechler]

Thank you, Jean and David.

I now can re-produce your problem,
and yes, it's a bug caused by yet another incompatibility
between (GNU) emacs and Xemacs
--- actually I think two (related) incompatibilities :

1) The set of   comint-dynamic-complete-functions
   that is used when within *R* is very different for GNU emacs
   and Xemacs

2) Both
        (ess-complete-filename)                and 
        (comint-replace-by-expanded-filename)
   in Xemacs, give the ominous error message
      "last thing matched was not a buffer"
   but do work in GNU emacs. Note that 
       comint-replace-by-expanded-filename is part of (X)emacs itself,
   not ESS.
   Hence something it would have been good had the Xemacs
   maintainers made sure worked (the same as in Emacs).

   Anyway
   -------> something for ESS-core to fix / work around

But yes, it would have been great had we found out about the
details for this  *BEFORE* the release of ESS 5.2.9 ...
At the time, Jean first opened this topic, back in February,
I think we all believed it was just a general ESS misfeature,
and M-Tab ( = comint-replace-by-expanded-filename ) would at
least work everywhere [TAB would not for some ESS versions],
At least now, we finally see that it's an Xemacs <-> GNU emacs
compatibility problem.

Martin Maechler, ETH Zurich



>>>>> "Jean" == Jean Eid <jeaneid at chass.utoronto.ca>
>>>>>     on Wed, 31 Aug 2005 18:44:17 -0400 writes:

    Jean> I get the same thing as well. I also tried the mouse
    Jean> click with my regular init and it also works fine

    Jean> Jean

    Jean> On Wed, 31 Aug 2005, david whiting wrote:

    >> Hmmmm, ok. I reinstalled xemacs and got ESS out of the
    >> subversion repository. I then started xemacs with:
    >> 
    >> xemacs --vanilla &
    >> 
    >> and in the *scratch* buffer I loaded ess-site.el. No
    >> problems. I then started R:
    >> 
    >> M-x R
    >> 
    >> and selected a working directory that has a subdirectory
    >> with an R data file. In ESS/R I then did:
    >> 
    >> load("R-data/
    >> 
    >> and pressed tab to complete the file name and got the
    >> "last thing matched was not a buffer" message.
    >> 
    >> Oooooh, this is interesting . . . xemacs has a right
    >> mouse menu (you learn something new every day). OK, with
    >> the pop-up menu if I click on "Complete -> Complete File
    >> name" it works okay. So, the response is different
    >> depending on whether I use TAB or the mouse.  Does that
    >> help?
    >> 
    >> When I installed xemacs I just selected xemacs and let
    >> synaptic choose what else to install. It installed:
    >> 
    >> xemacs21 (21.4.17-1) xemacs21-basesupport-el
    >> (2004.08.18-2) xemacs21-bin (21.4.17-1) xemacs21-mule
    >> (21.4.17-1) xemacs21-mulesupport (2004.08.18-2)
    >> xemacs21-support (21.4.17-1)
    >> 
    >> 
    >> R 2.1.1 > version _ platform i686-pc-linux-gnu arch i686
    >> os linux-gnu system i686, linux-gnu status major 2 minor
    >> 1.1 year 2005 month 06 day 20 language R
    >> >
    >> 
    >> ESS from subversion so it should be the same as what you
    >> have? I installed ESS in ~/tmp/ess.
    >> 
    >> OS: Ubuntu 5.04
    >> 
    >> Anything else we can compare?
    >> 
    >> Dave.
    >> 
    >> 
    >> 
    >> 
    >> On 31/08/05, Martin Maechler <maechler at stat.math.ethz.ch>
    >> wrote: > >>>>> "david" == david whiting
    >> <david.r.whiting at gmail.com> > >>>>> on Wed, 31 Aug 2005
    >> 19:05:45 +0100 writes:
    >> >
    >> > david> On 31/08/05, Martin Maechler > david>
    >> <maechler at stat.math.ethz.ch> wrote: [...]
    >> >
    >> > >> That "last thing matched was not a buffer" sounds
    >> pretty > >> nasty, but I've never seen it.  It must be >
    >> >> Xemacs-specific somehow.
    >> >     >>
    >> > >> Any Xemacs users who can help ??
    >> >     >>
    >> >
    >> > david> I can confirm the behaviour. I have just
    >> installed > david> xemacs (version 21.4 patch 17 on
    >> ubuntu 5.04), > david> checked ess out of subversion and
    >> got the same > david> message.
    >> >
    >> > david> As to what it means . . . sorry I can't
    >> help. I'm > david> going back to real emacs :)
    >> >
    >> > Thank you, David.
    >> >
    >> > Still, I've now also installed xemacs21 on my ubuntu
    >> system at > home, and while it gives strange startup
    >> messages and warnings, > ess 5.2.9 seems to work quite
    >> nicely.  > Both with my usual (non trivial)
    >> initializations (.emacs or .xemacs/init.el) > and used as
    >> > xemacs --vanilla > and then in the *scratch* buffer >
    >> (load "..../ess/lisp/ess-site")
    >> >
    >> > and everything worked (M-x R ; editing *.R files ..)  >
    >> as long as I tried (not too long).
    >> >
    >> > Now what is the difference between your setup and mine?
    >> > Have you tried xemacs --vanilla + manual loading of
    >> ess-site ?
    >> >
    >> > Regards, > Martin
    >> >
    >> >
    >> 
    >> 
    >> --
    >> David Whiting