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AGAIN: Can't isearch 'ö'
AGAIN: Can't isearch 'ö'
Thu, 08 Dec 2005 11:25:22 +0900
About a half year ago, we discussed this.
> The original problem was that when a user have `ö' of
> iso-8859-15 in a buffer of iso-8859-15 coding system, he
> can't isearch that character by typing `ö' on his keyboard
> because that key is recognized as `ö' of iso-8859-1.
> Stefan's proposal is to translate a character by
> translation-table-for-input in read_char (). This is a
> generic solution, but it makes read_char () return different
> character depending on the buffer-file-coding-system of the
> current buffer, which may or may not cause anther problem.
> My proposal is to translate a character by
> translate-table-for-input in isearch-process-search-char.
> This is a limitted solution only for the current problem.
And, RMS wrote:
> Suppose we use the latter solution. We probably would want to use it
> in other places as well, but which ones? Can you suggest a rule for
> programmers to decide whether to translate the result from read-char
> thru translate-table-for-input, and when not to?
> Could you look thru the calls to read-char in Emacs, and see which
> ones clearly should do this translation, which ones clearly should
> not, and which ones would work right either with or without the
As I didn't have a time for such a heavy study, I didn't
respond anything, and the discussion has been inconclusive.
At least, the rule is to trasnalte the result from read-char
if it is compared with the characters in the current buffer.
And, Luc correctly pointed out:
> There is something that has not been pointed out in the summary Handa
> gave, but which I believe may be relevant. If I understood correctly,
> the problem in question will automatically completely disappear with
> Unicode and hence with Emacs 23. (Unless I misunderstood.)
I still don't have a time for the above study, but the
problem should be fixed somehow. So, unless someone else
can take over this matter, I propose again to install this
RCS file: /cvsroot/emacs/emacs/lisp/isearch.el,v
retrieving revision 1.277
diff -c -r1.277 isearch.el
*** isearch.el 30 Nov 2005 22:53:00 -0000 1.277
--- isearch.el 8 Dec 2005 02:21:52 -0000
*** 1809,1814 ****
--- 1809,1816 ----
((eq char ?|) (isearch-fallback t nil t)))
;; Append the char to the search string, update the message and re-search.
+ (if (char-table-p translation-table-for-input)
+ (setq char (or (aref translation-table-for-input char) char)))
(if (>= char ?\200)
- AGAIN: Can't isearch 'ö',
Kenichi Handa <=