Re: 23.0.60; Cannot isearch for non-ascii chars with emacs -nw -Q

[Kenichi Handa <handa@m17n.org>]

In article <jwvy79593wl.fsf-monnier+emacs@gnu.org>, Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> > It seems that something is broken in isearch-x.el (although
>>> > unicode merge didn't change it).  I'm now investigating.

> > I found that when isearch-printing-char is called,
> > last-command-char is already what decoded by
> > encoded-kbd-mode.

> That's good, right?

I hope so.

> > But, when I wrote isearch-x.el, last-command-char was the first byte
> > of utf-8 sequence.  So, isearch-x.el pushed back that byte in
> > unread-command-events and re-read the whole utf-8 sequence.

> I see your patch doesn't remove this use of unread-command-events.
> Is it still needed?

This part in isearch-process-search-multibyte-characters
(isearch-x.el) is still necessary because it seems that the
user key is not yet handled by an input method.

	(if isearch-input-method-function
	   ...)

but the following part is not necessary any more (but not
harmful even if it is there).

	(if (and (not str) (keyboard-coding-system))
	    (setq unread-command-events
		  (cons 'with-keyboard-coding
			(cons last-char unread-command-events))
		  str (read-string prompt nil 'junk-hist)))

I'll delete that part after confirming it is ok.

>>> Now that we've moved the keyboard decoding to input-event-map,
> > Ah!  Is that the change I wrote above?

> I don't see why that change would have such an effect.
> Actually, it seems that this "new" behavior is already present in the 22
> branch, maybe even in Emacs-22.1.

But, it was before the release of 21 when I modified
isearch-x last time.

> > Yes.  I think it can be done by adding less than 100 lines
> > of C code (mostly for handling meta-key) in
> > tty_read_avail_input and removing most of encoded-kb.el (we
> > still need the code of calling set-input-mode property).

> Might worth trying,

I'll work on it after the current problems of font selection
are all solved.

---
Kenichi Handa
handa@ni.aist.go.jp