bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

[Antonio Romano via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Good evening, I've been trying to view emojis on Emacs for Android and
noticed that colored emojis do not appear, while monochrome emojis do
appear instead. I've only experimented with Noto Emoji Colore and Noto
Emojis so far.


Steps to reproduce:

1. Install both Noto Emoji (monochrome emojis) and Noto Emoji Color
(colored emojis) and copy the two .TTF files to ~/fonts

2. Restart Emacs with -Q

3. Execute the following

(set-fontset-font t 'emoji '("Noto Color Emoji" . "iso10646-1") nil
'prepend)

4. Try to insert emojis and notice that blank "spaces" are inserted,
instead

5. Repeat step 3 but with "Noto Emoji" font and see how the blank
spaces
are filled with the respective monochrome emojis


I'm using the latest SourceForge release of Emacs for Android.

If this is not a big but a known limitation known I believe
it's appropriate to specify it under Android section of the Emacs
manual

Thank you in advance!




In GNU Emacs 30.0.50 (build 1, aarch64-unknown-linux-android29) of
 2024-06-14 built on xeon
Repository revision: a458dc5dc828cfbe5d74226d6ef45a3d205cb7d8
Windowing system distributor 'Sony', version 31.0.0
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bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

[Eli Zaretskii]

merge 71569 71568
thanks

> Date: Sat, 15 Jun 2024 14:01:54 +0000
> From:  Antonio Romano via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 
> Good evening, I've been trying to view emojis on Emacs for Android and
> noticed that colored emojis do not appear, while monochrome emojis do
> appear instead. I've only experimented with Noto Emoji Colore and Noto
> Emojis so far.

This is an exact duplicate of bug#71568 you have filed about 5 minutes
earlier, so I'm now merging the two.

bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Antonio Romano <n58r@pm.me> writes:

> Good evening, I've been trying to view emojis on Emacs for Android and
> noticed that colored emojis do not appear, while monochrome emojis do
> appear instead. I've only experimented with Noto Emoji Colore and Noto
> Emojis so far.
>
>
> Steps to reproduce:
>
> 1. Install both Noto Emoji (monochrome emojis) and Noto Emoji Color
> (colored emojis) and copy the two .TTF files to ~/fonts
>
> 2. Restart Emacs with -Q
>
> 3. Execute the following
>
> (set-fontset-font t 'emoji '("Noto Color Emoji" . "iso10646-1") nil
> 'prepend)
>
> 4. Try to insert emojis and notice that blank "spaces" are inserted,
> instead
>
> 5. Repeat step 3 but with "Noto Emoji" font and see how the blank
> spaces
> are filled with the respective monochrome emojis
>
>
> I'm using the latest SourceForge release of Emacs for Android.
>
> If this is not a big but a known limitation known I believe
> it's appropriate to specify it under Android section of the Emacs
> manual

The font driver doesn't yet grok color fonts, yes.  I'll see to
documenting this restriction.

bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

[Eli Zaretskii]

> Cc: 71569@debbugs.gnu.org
> Date: Sun, 16 Jun 2024 10:24:04 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Antonio Romano <n58r@pm.me> writes:
> 
> > Good evening, I've been trying to view emojis on Emacs for Android and
> > noticed that colored emojis do not appear, while monochrome emojis do
> > appear instead. I've only experimented with Noto Emoji Colore and Noto
> > Emojis so far.
> >
> >
> > Steps to reproduce:
> >
> > 1. Install both Noto Emoji (monochrome emojis) and Noto Emoji Color
> > (colored emojis) and copy the two .TTF files to ~/fonts
> >
> > 2. Restart Emacs with -Q
> >
> > 3. Execute the following
> >
> > (set-fontset-font t 'emoji '("Noto Color Emoji" . "iso10646-1") nil
> > 'prepend)
> >
> > 4. Try to insert emojis and notice that blank "spaces" are inserted,
> > instead
> >
> > 5. Repeat step 3 but with "Noto Emoji" font and see how the blank
> > spaces
> > are filled with the respective monochrome emojis
> >
> >
> > I'm using the latest SourceForge release of Emacs for Android.
> >
> > If this is not a big but a known limitation known I believe
> > it's appropriate to specify it under Android section of the Emacs
> > manual
> 
> The font driver doesn't yet grok color fonts, yes.  I'll see to
> documenting this restriction.

Did you have an opportunity to document this (in PROBLEMS, I guess?)

bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

[Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Eli Zaretskii <eliz@gnu.org> writes:

>> Cc: 71569@debbugs.gnu.org
>> Date: Sun, 16 Jun 2024 10:24:04 +0800
>> From:  Po Lu via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>> 
>> Antonio Romano <n58r@pm.me> writes:
>> 
>> > Good evening, I've been trying to view emojis on Emacs for Android and
>> > noticed that colored emojis do not appear, while monochrome emojis do
>> > appear instead. I've only experimented with Noto Emoji Colore and Noto
>> > Emojis so far.
>> >
>> >
>> > Steps to reproduce:
>> >
>> > 1. Install both Noto Emoji (monochrome emojis) and Noto Emoji Color
>> > (colored emojis) and copy the two .TTF files to ~/fonts
>> >
>> > 2. Restart Emacs with -Q
>> >
>> > 3. Execute the following
>> >
>> > (set-fontset-font t 'emoji '("Noto Color Emoji" . "iso10646-1") nil
>> > 'prepend)
>> >
>> > 4. Try to insert emojis and notice that blank "spaces" are inserted,
>> > instead
>> >
>> > 5. Repeat step 3 but with "Noto Emoji" font and see how the blank
>> > spaces
>> > are filled with the respective monochrome emojis
>> >
>> >
>> > I'm using the latest SourceForge release of Emacs for Android.
>> >
>> > If this is not a big but a known limitation known I believe
>> > it's appropriate to specify it under Android section of the Emacs
>> > manual
>> 
>> The font driver doesn't yet grok color fonts, yes.  I'll see to
>> documenting this restriction.
>
> Did you have an opportunity to document this (in PROBLEMS, I guess?)

I did in the Android appendix of the user manual.

bug#71569: 30.0.50; Noto Color Emoji does not work in Emacs for Android

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: n58r@pm.me,  71569@debbugs.gnu.org
> Date: Sat, 22 Jun 2024 17:11:13 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> > 1. Install both Noto Emoji (monochrome emojis) and Noto Emoji Color
> >> > (colored emojis) and copy the two .TTF files to ~/fonts
> >> >
> >> > 2. Restart Emacs with -Q
> >> >
> >> > 3. Execute the following
> >> >
> >> > (set-fontset-font t 'emoji '("Noto Color Emoji" . "iso10646-1") nil
> >> > 'prepend)
> >> >
> >> > 4. Try to insert emojis and notice that blank "spaces" are inserted,
> >> > instead
> >> >
> >> > 5. Repeat step 3 but with "Noto Emoji" font and see how the blank
> >> > spaces
> >> > are filled with the respective monochrome emojis
> >> >
> >> >
> >> > I'm using the latest SourceForge release of Emacs for Android.
> >> >
> >> > If this is not a big but a known limitation known I believe
> >> > it's appropriate to specify it under Android section of the Emacs
> >> > manual
> >> 
> >> The font driver doesn't yet grok color fonts, yes.  I'll see to
> >> documenting this restriction.
> >
> > Did you have an opportunity to document this (in PROBLEMS, I guess?)
> 
> I did in the Android appendix of the user manual.

OK, so I'm closing this bug.