Re: [Mlterm-dev-en] Re: mlterm-cvs: segfault with m17n-lib-cvs

[Seiichi S. <ss...@sh...>]

On Tue, Nov 02, 2004 at 02:29:50PM +0900,
 Kenichi Handa wrote:

> In article <20041102040301.GA3385%ss...@sh...>, Seiichi SATO <ss=
at...@sh...> writes:
>=20
> > Sorry for my late reply.
> > On Fri, Oct 29, 2004 at 08:50:03AM +0900,
> >  Kenichi Handa wrote:
>=20
> >>  When I type 'a' while activating m17nlib:ja:anthy, =8E=BC=8E=A6=8E=BC=
=8E=A4 is
> >>  shown with underline.  But, when I type Shift-SPC to turn
> >>  the input method off, =8E=BC=8E=A6=8E=BC=8E=A4 is still shown with =
underline and
> >>  not sent to terminal. I think that preedit text should be
> >>  fixed and sent to terminal before turning off the input
> >>  method.
>=20
> > I think that there are three ways for turning off IM in preediting.
>=20
> > A) ignore request for switching mode (uim)
> > B) clear current preedit text (MS-IME, IIIMF, kinput2, skkinput)
> > C) commit current preedit text (nabi, Handa-san's opinion)
>=20
> > (I don't know which way is the most useful...)
>=20
> > A is easy to implement for me, but B and C are hard.  In cases of
> > B and C, preedit must be cleared, but it seems that m17n-lib does
> > not provide API for it (except for re-creating MInputContext).
> > If I understand correctly, I'll adopt A.
>=20
> If you want to perform B or C without destroying
> MInputContext, for B, you can use minput_toggle, and for C,
> you can directly access the M-text in MInputContext->preedit
> to retrieve the current preedit text.  It's also possible to
> get only a subrange of preedit text before
> `in-preedit-cursor' by checking MInputContext->cursor_pos.

I tested minput_toggle() with the following code:

  minput_toggle(ic);
  if (!ic->active) {
    printf("length of preedit text: %d\n", mtext_len(ic->preedit));
  }

The result of this code is "length of preedit text: 1" after
msymbol("a") was through minput_filter().  If preedit text was
cleared by minput_toggle(), I think the length should be 0.

I modified above code as below and got an expected result.

  minput_filter(ic, Mnil, Mnil); /* <-- added */
  minput_toggle(ic);
  if (!ic->active) {
    printf("length of preedit text: %d\n", mtext_len(ic->preedit));
  }

Am I using minput_filter() and minput_toggle() correctly?

--=20
Seiichi