bug#29974: Emacs-25.3 does not render correctly when itrans input method is enabled

bug#29974: Emacs-25.3 does not render correctly when itrans input method is enabled

[Aviral Goel]

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Hi

On pressing  hve  in devanagari-itrans input method the following should be
rendered - ह्वे
But Emacs-25.3 (built from source) does not render this correctly. It
splits the ` mark and places at the end of line.
Similar behavior is observed on pressing d which should render द् but it
does not.
I have attached an image to show the problem. This however works fine on
Emacs 24 (installed via package manager - apt)

Here is my system info -

OS: Ubuntu 16.04.3 LTS
Kernel: 4.4.0-104-generic

Here are the config options with which I built emacs 25.3

./configure --with-all --with-xaw3d  --with-xwidgets --with-x-toolkit=gtk3
--with-png --with-m17n-flt --with-xft

​Thanks
,
Aviral

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bug#29974: Emacs-25.3 does not render correctly when itrans input method is enabled

[Eli Zaretskii]

> From: Aviral Goel <goel.aviral@gmail.com>
> Date: Wed, 3 Jan 2018 22:16:29 -0500
> 
> On pressing  hve  in devanagari-itrans input method the following should be rendered - ह्वे
> But Emacs-25.3 (built from source) does not render this correctly. It splits the ` mark and places at the end of
> line. 
> Similar behavior is observed on pressing d which should render द् but it does not.

I cannot reproduce this.  I'm not on Ubuntu, so this probably means
your m17n libraries are either outdated, or they have a bug.

> I have attached an image to show the problem. This however works fine on Emacs 24 (installed via package
> manager - apt)

Maybe Emacs 24 was built against different versions of the libraries
that participate in shaping complex scripts?

bug#29974: Emacs-25.3 does not render correctly when itrans input method is enabled

[Aviral Goel]

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Dear Eli,

You are right. The m17n libraries are outdated. I updated them and
recompiled Emacs 25.3 but the problem persisted.
Due to time constraints, I am not looking forward to debugging this issue
further.
I will continue working with  Emacs 24.5.1 for now.
Hopefully when I upgrade to Ubuntu 18.04, I will get new m17n libraries
with Emacs 25.x and this issue won't show up.

​Thanks
,
Aviral


On Thu, Jan 4, 2018 at 11:06 AM, Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Aviral Goel <goel.aviral@gmail.com>
> > Date: Wed, 3 Jan 2018 22:16:29 -0500
> >
> > On pressing  hve  in devanagari-itrans input method the following should
> be rendered - ह्वे
> > But Emacs-25.3 (built from source) does not render this correctly. It
> splits the ` mark and places at the end of
> > line.
> > Similar behavior is observed on pressing d which should render द् but it
> does not.
>
> I cannot reproduce this.  I'm not on Ubuntu, so this probably means
> your m17n libraries are either outdated, or they have a bug.
>
> > I have attached an image to show the problem. This however works fine on
> Emacs 24 (installed via package
> > manager - apt)
>
> Maybe Emacs 24 was built against different versions of the libraries
> that participate in shaping complex scripts?
>

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