cannot backspace

[Mike Ma]

I type something wrong, then I want to backspace, when I press the key, Emacs will delete a character, but not ibus.

[Mike Ma (zhtx10)]

Sorry for my poor English.

Here are some informations about my computer:
Input Method: SunPinyin
Ibus version:IBus 1.3.99.20110708
ibus.el version: emacs-ibus-0.2.1-3.fc15.noarch
uname -a: Linux laptop.mike 2.6.38.8-35.fc15.x86_64 #1 SMP Wed Jul 6 13:58:54 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
distro: fedora 15 x86_64

Thank you.
Mike.

[IRIE Shinsuke (irie)]

Sorry for very late reply...

I might not understand your problem, but if the 'backspace' means typing C-h, please try the following setting:

(setq ibus-clear-preedit-when-unexpected-event t)

This option changes the behavior when preedit exits by typing a key not handled by IBus. If the value is non-nil, preedit text will be cleared. If nil, it will remain.

Thanks for your report.

[Ma Jiehong (ma-jiehong)]

I would like to open this bug again since I also have this issue for a while now.

I use Ibus-el in Archlinux by the way.

I think you did not understand well the bug report. By "backspace", I think Mike Ma wanted to speak about the key we use to delete characters when we write (http://en.wikipedia.org/wiki/Backspace).

So, for example, I usually write in Chinese in Emacs thanks to ibus. Let's say I wanna write 您好[nin hao] but I made a mistake and typed 你好[ni hao], forgetting the "n". I want to deletes my input in ibus to corret it, but if I do use the backspace key on my keyboard, then the ibus windows doesn't change and it starts deleted things in the line I am on in Emacs. Do you understand better?

I waited till version 0.3, but this bug hasn't been resolved and it is very annoying.

I have uploaded a video to help you to understand the issue. Here it is: http://depositfiles.com/files/za6bsw96l

[IRIE Shinsuke (irie)]

@Jiehong

Thanks, I got it.

You are using over-the-spot style input, but basically ibus-mode supports only the on-the-spot style, not the over-the-spot style. By default, ibus-mode doesn't handle backspace key unless preedit text is embedded in buffer text, so backspace key doesn't work with over-the-spot style.

If you want to use the over-the-spot style input, the following setting in ~/.emacs may help you to solve this problem:

(ibus-define-common-key [backspace] t)

Note that this setting might causes another problem because backspace key will always be sent to ibus-daemon even if unnecessary.

[Ma Jiehong (ma-jiehong)]

Thanks for the precision. I guess I prefer using the on-the-spot style instead of rising some hidden issues with (ibus-define-common-key [backspace] t).

Is the over-the-spot style input planned for ibus-mode? Or are they any technical issues with implementing it?

[IRIE Shinsuke (irie)]

> Is the over-the-spot style input planned for ibus-mode? Or are they any technical issues with implementing it?

No, I don't plan to do that because in the over-the-spot style input there is no way to know if preedit is being done.

One more thing, I have started developing the ibus-mode to use the on-the-spot style in Emacs. :)