How to render underline on space letters?

[Reverier-Xu]

Hi, thanks for your awesome work!

I'm using xterm.js 5.1.0 with plugins and options:

const term = new Terminal({} as ITerminalOptions)

const fitAddon = new FitAddon()
const weblinksAddon = new WebLinksAddon()
const canvasAddon = new CanvasAddon()

term.loadAddon(fitAddon)
term.loadAddon(weblinksAddon)
term.loadAddon(canvasAddon)

I found that xterm.js cannot draw underline on blank(space) characters:

I could not find any option to change this behavior, but I found that vscode can display the underline properly. What should I do?

[Tyriar]

This actually works fine when you use a space:

I suspect the gap is a tab in your image which is why it's not working?

[Reverier-Xu]

nether tab nor space works :(

[Reverier-Xu]

I wrote a minimal demo to reproduce here, I could confirm that it does not work in all my browsers:

https://github.com/Reverier-Xu/xtermjs-4462

Microsoft Edge 111.0.1661.62

Firefox 111.0.1

Chromium 111.0.5563.146

[Tyriar]

Could you try on the latest beta tag?

[jerch]

This is prolly related to #4438 😬

[Reverier-Xu]

The lastest beta tag doesn't seem to work either...

I upgrade xterm-addon-canvas to 0.4.0-beta.9, it works now!