| 2023-02-09 16:19:48 |
Jeremy Bícha |
bug |
|
|
added bug |
| 2023-02-09 16:19:48 |
Jeremy Bícha |
attachment added |
|
red-black-line-emoji.png https://bugs.launchpad.net/bugs/2006756/+attachment/5645929/+files/red-black-line-emoji.png |
|
| 2023-02-09 16:19:55 |
Jeremy Bícha |
nominated for series |
|
Ubuntu Jammy |
|
| 2023-02-09 16:19:55 |
Jeremy Bícha |
bug task added |
|
pango1.0 (Ubuntu Jammy) |
|
| 2023-02-09 16:20:00 |
Jeremy Bícha |
pango1.0 (Ubuntu Jammy): status |
New |
In Progress |
|
| 2023-02-09 16:20:02 |
Jeremy Bícha |
pango1.0 (Ubuntu Jammy): importance |
Undecided |
Low |
|
| 2023-02-09 16:29:50 |
Jeremy Bícha |
description |
Impact
------
Composite emoji (such as 🫱🏾 [Rightwards Hand: Medium-Dark Skin Tone]) are not rendered correctly. By "composite emoji", I mean emoji that are made up of multiple Unicode characters joined by "ZWJ". Composite emoji are used for skin tones, gender, flags, and a few other emoji.
The incorrect rendering can be seen in Ubuntu 22.04's default text editor, gedit, as extra vertical red and black lines after the character. Screenshot attached.
Test Case
---------
Install the update
Close Text Editor if it is open
Open Text Editor
Paste this character in Text Editor:
🫱🏾
It should display correctly without any extra vertical lines after it.
Other Info
----------
This was originally noticed while verifying https://launchpad.net/bugs/1990677
What Could Go Wrong
-------------------
This is a one line fix cherry-picked from pango 1.50.8
pango is a text rendering library in GTK. GTK is used for most of the apps in the default install for Ubuntu Desktop and several other Ubuntu desktop flavors. pango is also used by mutter which is a key component of GNOME Shell which provides the basic desktop environment for default Ubuntu. A critical enough bug in pango could make the desktop and apps unusuable because text wouldn't be readable. This is mitigated through build tests and autopkgtests. |
Impact
------
Composite emoji (such as 🫱🏾 [Rightwards Hand: Medium-Dark Skin Tone]) are not rendered correctly. By "composite emoji", I mean emoji that are made up of multiple Unicode characters joined by "ZWJ". Composite emoji are used for skin tones, gender, flags, and a few other emoji.
The incorrect rendering can be seen in Ubuntu 22.04's default text editor, gedit, as extra vertical red and black lines after the character. Screenshot attached.
Test Case
---------
Install the update
Close Text Editor if it is open
Open Text Editor
Paste this character in Text Editor:
🫱🏾
It should display correctly without any extra vertical lines after it.
Other Info
----------
This was originally noticed while verifying https://launchpad.net/bugs/1990677
What Could Go Wrong
-------------------
This is a one line fix cherry-picked from pango 1.50.8 (plus 30+ lines for a test case).
pango is a text rendering library in GTK. GTK is used for most of the apps in the default install for Ubuntu Desktop and several other Ubuntu desktop flavors. pango is also used by mutter which is a key component of GNOME Shell which provides the basic desktop environment for default Ubuntu. A critical enough bug in pango could make the desktop and apps unusuable because text wouldn't be readable. This is mitigated through build tests and autopkgtests. |
|
| 2023-02-09 19:58:05 |
Andreas Hasenack |
pango1.0 (Ubuntu Jammy): status |
In Progress |
Fix Committed |
|
| 2023-02-09 19:58:06 |
Andreas Hasenack |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2023-02-09 19:58:08 |
Andreas Hasenack |
bug |
|
|
added subscriber SRU Verification |
| 2023-02-09 19:58:11 |
Andreas Hasenack |
tags |
jammy |
jammy verification-needed verification-needed-jammy |
|
| 2023-02-14 18:49:24 |
Mateusz Stachowski |
tags |
jammy verification-needed verification-needed-jammy |
jammy verification-done-jammy verification-needed |
|
| 2023-02-14 22:56:56 |
Jeremy Bícha |
bug |
|
|
added subscriber Mateusz Stachowski |
| 2023-02-15 14:29:38 |
Jeremy Bícha |
tags |
jammy verification-done-jammy verification-needed |
jammy verification-done verification-done-jammy |
|
| 2023-03-01 06:01:17 |
Chris Halse Rogers |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2023-03-01 06:04:52 |
Launchpad Janitor |
pango1.0 (Ubuntu Jammy): status |
Fix Committed |
Fix Released |
|
