[ESS] emacs 24 "woe": file name completion does not work for me

Vitalie Spinu spinuvit at gmail.com
Thu Nov 15 17:47:25 CET 2012

  >> Vitalie Spinu <spinuvit at gmail.com>
  >> on Thu, 15 Nov 2012 16:58:21 +0100 wrote:

  VS> Hi Martin, 

  VS>  (add-hook 'completion-at-point-functions 'comint-filename-completion)

  VS> adds it globally. 

This seems to not work correctly in some modes. Most notably in
emacs-mode.  Local completion (lisp-completion-at-point) does not pass
the ball further on, when the completion is not found. It works in gnus
mail buffer though :)

This is a bug which I see even in today's pre-release. Will send a


  >> Martin Maechler <maechler at stat.math.ethz.ch>
  >> on Thu, 15 Nov 2012 16:33:46 +0100 wrote:

  >> I'm sure some emacs gurus (possibly among ESS core!) will be
  >> able to help quickly,
  >> and I assume it has affected others, that's why I post here.

  >> I'm working with Emacs 23  or  Emacs 24, depending on the
  >> computer (OS) I use. I have a habit to use
  >> comint-dynamic-complete  very frequently (and have bound it to
  >> C-M-Tab and similar keys as this relates to ESS behavior)
  >> in TODO, README, etc files,  and also in *.R (or *.c) files when
  >> referring to other source files.

  >> Now, Help about it in Emacs 24 says 

  >> comint-dynamic-complete is an alias for `completion-at-point'.

  >> It is bound to <C-tab>, <C-M-tab>, <f24> TAB, <menu> TAB.

  >> (comint-dynamic-complete)

  >> This function is obsolete since 24.1;
  >> use `completion-at-point' instead.

  >> Perform completion on the text around point.
  >> The completion method is determined by `completion-at-point-functions'.

  >> and if I look at the 
  >> completion-at-point-functions

  >> it says

  >> completion-at-point-functions's value is
  >> (tags-completion-at-point-function)

  >> and "of course" that has nothing to do with file name
  >> completion, and so I should not wonder why file name completion
  >> has stopped working for me, since I (am / had to start) using
  >> emacs 24.

  >> Now this makes using Emacs 24 really  a much less pleasant
  >> experience for me.

  >> Comments / Hints / Different experiences ?

  >> Thanks in advance:
  >> Martin

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