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`completion-in-region'
From: |
Leo |
Subject: |
`completion-in-region' |
Date: |
Tue, 06 Apr 2010 15:37:55 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) |
Hello,
I experimented with this new feature yesterday by using it in my local copy of
snippet.el and AUCTeX completion. I think the feature is elegant in that it
allows consistent behaviour of TAB by (setq tab-always-indent 'complete). I
have also quite a few problems (I suspect the feature is not yet stable).
completion-in-region allows a complete customise of its behaviour through
completion-in-region-functions. But minibuffer-message blocks execution for
minibuffer-message-timeout seconds (default to 2) unless there's input from
user.
For example if I define my own:
(defun my-completion-in-region (next-fun start end collection predicate)
(when (funcall next-fun start end collection predicate)
BODY))
BODY will only be executed after 2 seconds that gives a false slow user
experience. I can work around this problem by let-binding
minibuffer-message-timeout to 0. But I think some improvement can be done
here.
`minibuffer-complete' seems entirely designed for interactive use since it
does not pass on the return value from completion--do-completion, something
desirable when writing a function for completion-in-region-functions. One can
still use try- all- test-completion(s) but that seems to defeat the purpose of
completion-in-region.
Ever since enable (setq tab-always-indent 'complete), I have found the (ding)
noise due to no match occurs far too often and very annoying.
The above comments are based on my experience to write two completions: one
for TeX: I want the completion to automatically include a 'close' string (i.e.
{} for LaTeX macros etc.), I can write a function for
completion-at-point-functions which returns '(beg end completion-function) and
do the adding in completion-function but it is difficult to control the
position of point so that it locates between {}. Another solution is to
customise completion-in-region through completion-in-region-functions but I
need to isolate the interference between functions in
completion-in-region-functions.
Another for snippet (similar to abbrev), complete the snippet (abbrev) and
then expand if completion succeeds.
Leo
- `completion-in-region',
Leo <=
- Re: `completion-in-region', Stefan Monnier, 2010/04/08
- Re: `completion-in-region', Leo, 2010/04/11
- Re: `completion-in-region', Stefan Monnier, 2010/04/11
- RE: `completion-in-region', Drew Adams, 2010/04/11
- Re: `completion-in-region', Stefan Monnier, 2010/04/11
- RE: `completion-in-region', Drew Adams, 2010/04/11
- Re: `completion-in-region', Stefan Monnier, 2010/04/11
- RE: `completion-in-region', Drew Adams, 2010/04/11
- Re: `completion-in-region', Lennart Borgman, 2010/04/11
- Re: `completion-in-region', Stefan Monnier, 2010/04/11