microsoft / microsoft/terminal
DECDHL double-height (box drawing) characters missing in vttest test case
- Dominant language
- C++
- Stars
- 105k
- Forks
- 9.6k
- Avg merge
- 3d 17h
- Merged PRs (30d)
- 29
Description
### Windows Terminal version
1.23.13503.0
### Windows build number
10.0.22631.0
### Other Software
VT100 test program, version 2.7 (20230201)
### Steps to reproduce
run `vttest`, go to menu number `4`, press CR a couple of times until the the page is shown yuou'll see in the screenshot that I attached.
### Expected Behavior
full box is drawn, for reference, KDE konsole and xterm both show it correctly
### Actual Behavior
on the right hand side, some box drawing characters are missing
### See also
https://github.com/microsoft/terminal/issues/7865
Contributor guide
Research direction
Reproduce the issue with VT100 test program vttest 2.7 by opening menu 4 and pressing CR until the affected page appears. Compare the rendering with KDE Konsole and xterm, then trace the Windows Terminal box-drawing and double-height character handling; done means the full box is drawn without missing characters.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- cli, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100