[Bug 1999864] New: Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Bug ID: 1999864
           Summary: Cannot find package with font for Coptic although such
                    a package exists for Fedora 34
           Product: Fedora
           Version: 34
            Status: NEW
         Component: fontconfig
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail],
                    [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail]
  Target Milestone: ---
    Classification: Fedora

Created attachment 1819530
  --> https://bugzilla.redhat.com/attachment.cgi?id=1819530&action=edit
Gnome Software unable to find Coptic fonts

Using Fedora-Workstation-Live-x86_64-34-1.2.iso in qemu.

I played with emoji picker and Gnome popped up something requesting more fonts.

I clicked and then Gnome Software said:

“Unable to find the Coptic, Persian, Old (ca. 600-400 B.C.), Ugaritic you were
searching for. Please see _the documentation_ for more information.”

See attached screenshot.

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Mike FABIAN  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from Mike FABIAN  ---
But we have a package with Coptic fonts:

google-noto-sans-coptic-fonts-20201206-2.fc34.noarch

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #2 from Mike FABIAN  ---
I am not sure whether this is really a bug in fontconfig, I was just guessing
when choosing “Component: fontconfig”.

$ fc-list | grep -i cop 
/usr/share/fonts/google-noto/NotoSansCoptic-Regular.ttf: Noto Sans
Coptic:style=Regular
...

$ rpm -qf /usr/share/fonts/google-noto/NotoSansCoptic-Regular.ttf
google-noto-sans-coptic-fonts-20201206-2.fc34.noarch

$ fc-list 'Noto Sans Coptic' family file lang
/usr/share/fonts/google-noto/NotoSansCoptic-Regular.ttf: Noto Sans Coptic:lang=

Nothing behind “lang=”

And there is no “cop.orth” file here:

https://gitlab.freedesktop.org/fontconfig/fontconfig/-/tree/main/fc-lang

So “maybe” this has something to do with fontconfig, I am not sure.

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #3 from Mike FABIAN  ---
Created attachment 1819531
  --> https://bugzilla.redhat.com/attachment.cgi?id=1819531&action=edit
Video showing how to reproduce the Gnome Software “Unable to find the Coptic
...” error

This video shows how the Gnome Software error message

“Unable to to find the Coptic ...”

can be easily reproduced using emoji-picker.

Just open the “No, Number, Other” Unicode category in emoji-picker.

This continues to happen **even if**
google-noto-sans-coptic-fonts-20201206-2.fc34.noarch
is already installed!

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #4 from Jens Petersen  ---
Maybe it is because we removed the font lang metadata from fonts packages
and we don't have a langpacks for Coptic... hmmm

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #5 from Akira TAGOH  ---
What's the locale for Coptic?

If there are any resources or pointer to determine the minimal glyph covarage
for Coptic, that would also helps.

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Akira TAGOH  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |needinfo?([e-mail]
                   |                            |m)

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #6 from Ben Cotton  ---
This message is a reminder that Fedora Linux 34 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 34 on
2022-06-07.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with
a
'version' of '34'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version' 
to a later Fedora Linux version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora Linux 34 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Akira TAGOH  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|34                          |35

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #7 from Ben Cotton  ---
This message is a reminder that Fedora Linux 35 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 35 on
2022-12-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with
a
'version' of '35'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version' 
to a later Fedora Linux version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora Linux 35 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Akira TAGOH  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|35                          |rawhide

[Bug 1999864] Cannot find package with font for Coptic although such a package exists for Fedora 34

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|38                          |39

--- Comment #9 from Jens Petersen  ---
So there is no orth currently for Coptic?

I think the language code is 'cop'.

[Bug 1999864] Cannot find package with font for Coptic although package exists in Fedora

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Cannot find package with    |Cannot find package with
                   |font for Coptic although    |font for Coptic although
                   |such a package exists for   |package exists in Fedora
                   |Fedora 34                   |

[Bug 1999864] Cannot find package with font for Coptic although package exists in Fedora

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #10 from Jens Petersen  ---
Btw seems Liberation also has some Coptic coverage.

[Bug 1999864] Cannot find package with font for Coptic although package exists in Fedora

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

--- Comment #11 from Akira TAGOH  ---
No, no orth for Coptic. I locally added cop.orth for testing purpose like the
following coverage according to https://en.wikipedia.org/wiki/Coptic_script:

03E2-03EF  # Greek and Coptic
2C80-2CF3  # Coptic
2CF9-2CFF  # Coptic

and here is the result:
% ./build/fc-validate/fc-validate -l cop
/usr/share/fonts/google-noto/NotoSansCoptic-Regular.ttf
/usr/share/fonts/google-noto/NotoSansCoptic-Regular.ttf:0 Satisfy the coverage
for cop language
% ./build/fc-validate/fc-validate -l cop
/usr/share/fonts/liberation-sans-fonts/LiberationSans-Regular.ttf
/usr/share/fonts/liberation-sans-fonts/LiberationSans-Regular.ttf:0 Missing 123
glyph(s) to satisfy the coverage for cop language

Apparently Liberation doesn't have glyphs in disunification block supported
since Unicode 4.1 like defined in the above orth at line number 2 and 3.
Although it doesn't closely need to be the same, I don't know what is the
minimal requirement to represent Coptic. If the unification code block is good
enough, Liberation can satisfies Coptic coverage right.

[Bug 1999864] Cannot find package with font for Coptic although package exists in Fedora

https://bugzilla.redhat.com/show_bug.cgi?id=1999864

Akira TAGOH  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |FutureFeature
            Version|39                          |rawhide