composite emoji shows extra vertical color lines
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pango1.0 (Ubuntu) |
Fix Released
|
Low
|
Unassigned | ||
Jammy |
Fix Released
|
Low
|
Unassigned |
Bug 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
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This was originally noticed while verifying https:/
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.
description: | updated |
tags: |
added: verification-done-jammy removed: verification-needed-jammy |
Hello Jeremy, or anyone else affected,
Accepted pango1.0 into jammy-proposed. The package will build now and be available at https:/ /launchpad. net/ubuntu/ +source/ pango1. 0/1.50. 6+ds-2ubuntu1 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.
If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification- needed- jammy to verification- done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed- jammy. In either case, without details of your testing we will not be able to proceed.
Further information regarding the verification process can be found at https:/ /wiki.ubuntu. com/QATeam/ PerformingSRUVe rification . Thank you in advance for helping!
N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.