Bug 425578

Summary: Variation selectors don't change column widths of preceding characters correctly
Product: [Applications] konsole Reporter: Frederick Zhang <frederick888>
Component: fontAssignee: Konsole Developer <konsole-devel>
Status: REPORTED ---    
Severity: normal    
Priority: NOR    
Version: 20.08.0   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Up: Konsole, Below: Kitty

Description Frederick Zhang 2020-08-20 08:28:45 UTC
Created attachment 131035 [details]
Up: Konsole, Below: Kitty

SUMMARY
Variation selectors (U+FE0E, U+FE0F) should be able to enforce column width on some preceding characters, e.g. U+270F ✏. However they have no effects in Konsole.

STEPS TO REPRODUCE
1. Launch Konsole
2. echo -e '\U270F XX\nABCD'
3. echo -e '\U270F\UFE0E XX\nABCD'
4. echo -e '\U270F\UFE0F XX\nABCD'

OBSERVED RESULT
U+270F always occupies one column.

EXPECTED RESULT
The third command should cause U+270F to occupy 2 columns.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0
Kernel Version: 5.8.1-zen1-1-zen
OS Type: 64-bit