GNU bug report logs - #13206
24.3.50; FR: insert-char must(?) show characters visually in completion buffer

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From: Jambunathan K <kjambunathan <at> gmail.com>
To: 13206 <at> debbugs.gnu.org
Subject: bug#13206: 24.3.50; FR: insert-char must(?) show characters visually in completion buffer
Date: Mon, 17 Dec 2012 19:10:34 +0530

[Message part 1 (text/plain, inline)]

(My NIC card went down during earlier sent.  Apologies if it results in
duplicate bug)

It will be wonderful if ucs-insert shows the characters visually in the
completion buffer.

Here is a proof-of-concept.  Install an annotation function. 

    (setq completion-extra-properties
          (list :annotation-function 'annotate-ucs-names))

    (defun annotate-ucs-names (name)
      (format "(%s)" (char-to-string (cdr (assoc-string name (ucs-names) t)))))

M-x insert-char RET will give screenshot 1.  Note the presence of
characters visually next to char names.  I would have wised to place the
the glyphs come before the description.

Now let us install a small /hack/ to minibuffer as shown below. The
result is as shown in screenshot 2, which I would much prefer.
(Ofcourse, the insertion itself wouldn't work)

Following two things emerge from this experiment.

    1. Annotation may go infront of the candidate.
    2. Annotation may provide a substitution for visual feedback etc etc.

[minibuffer-hack.diff (text/x-diff, attachment)]

[1-insert-char-with-annotations.png (image/png, attachment)]

[2-insert-char-with-substitution.png (image/png, attachment)]

[Message part 5 (text/plain, inline)]

In GNU Emacs 24.3.50.5 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2012-12-15 on debian-6.05
Bzr revision: 111244 eliz <at> gnu.org-20121215133821-ie5ujd9ogv3tw34f
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Important settings:
  value of $LANG: en_IN
  locale-coding-system: iso-latin-1-unix
  default enable-multibyte-characters: t

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