Make adjust-cursor-thickness apply to cursor-style = underline too

[zx8]

Coming from this answer, it appears this option already applies to the thickness of the cursor when the style is set to bar, but it does not apply when the cursor style is set to underline.

Here's how it looks between iTerm (left) and Ghostty (right) at the moment:

Would it be possible to extend this setting to work with underline mode too?

[gko]

to adjust underline cursor thickness you can use adjust-underline-thickness:
https://ghostty.org/docs/config/reference#adjust-underline-thickness

although, it would also impact other underlined text

[zx8]

Yeah, I know. I don't really want to affect general underline thickness; this request is specifically related to cursor thickness.

[xzbdmw]

This is important in vim operator pending mode, it's surprised there is not a dedicated option for it.

[doums]

adjust-underline-thickness is great to adjust general underlined text style. On the other hand the cursor thickness is handled by a dedicated option adjust-cursor-thickness which is good. Having a separate option to adjust the cursor thickness regardless of whatever other thickness options is nice. (And what I was looking for).
But the problem is: this option only applies to the cursor vertical 'bar' style while for some reason, the cursor horizontal bar style (aka 'underline') is still controlled by adjust-underline-thickness.
In my case I need a cursor horizontal bar thicker than the general underlined text style. But yea it is impossible currently.
Also surprised by the options design here.

[qwerasd205]

Yeah, currently we don't have a dedicated function for drawing the underline cursor, we use the same code as draws the actual underline. Separating it out should be easy enough.

[qwerasd205]

Created issue #7651 for this.