https://bugs.kde.org/show_bug.cgi?id=496534
Bug ID: 496534
Summary: Color of Underline/Undercurl cannot be set within vim
Classification: Applications
Product: konsole
Version: 24.08.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: konsole-de...@kde.org
Reporter: terrycc...@gmail.com
Target Milestone: ---
Created attachment 176000
--> https://bugs.kde.org/attachment.cgi?id=176000&action=edit
Example of what the undercurl color looks like in Konsole
SUMMARY
The color of underline/undercurl as set in vim does not display in Konsole
STEPS TO REPRODUCE
1. In a .vimrc file in home directory (cd ~), add the following settings:
```
setlocal spell
try | lang en_US | catch | endtry
set spelllang=en_us
let &t_Cs = "\e[4:3m"
let &t_Ce = "\e[4:0m"
hi SpellBad term=underline cterm=underline gui=underline
```
then save the file.
2. Open vim, and then type a misspelled word.
OBSERVED RESULT
We see a red undercurl in other terminals such as: iterm2 and
xfce4-terminal:1.1.3, but not in Konsole. The color of the undercurl remains
the same color as the text.
EXPECTED RESULT
The undercurl color should red.
SOFTWARE/OS VERSIONS
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 6.2.0
KDE Plasma Version: 6.2.0
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0
ADDITIONAL INFORMATION
Konsole clearly could support color undercurls as `echo -e
"\e[4:3m\e[58:2::215:58:103mThis text has an undercurl with color\e[4:0m"`
works in Konsole. I have no idea why setting color undercurl in vim does not
work. This may be a vim specific issue, but it seems that my vim settings
above work in other terminals, just not in Konsole, and I cannot figure out
why. If it helps, highlighting in vim is defined in
https://github.com/vim/vim/blob/master/src/highlight.c.
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