fix(statuscolumn): use extmarks cursorline hl

[minusfive]

Description

Statuscolumn snack swallows the cursorline_hl_group on extmarks, causing defined cursorline highlights to break.

Related Issue(s)

TBD (searching...)

Screenshots

With appropriate GitSigns highlights defined on theme, e.g.:

-- plugin spec
{
  "lewis6991/gitsigns.nvim",
  opts = {
    culhl = true,
  },
},

--- Catppuccin
{
  GitSignsAddCul = { bg = colors.mantle, fg = colors.green },
  GitSignsChangeCul = { bg = colors.mantle, fg = colors.yellow },
  GitSignsDeleteCul = { bg = colors.mantle, fg = colors.red },
}

Before

After

[folke]

i dont think this is correct. Won't work if both a texthl and culhl are defined.
It may work in the gitsigns case, since they probably set the fg for the culhl to the same value.
The correct way would be to apply both hl groups, but I don't think that's possible with the statuscolumn syntax.

[minusfive]

i dont think this is correct. Won't work if both a texthl and culhl are defined.

It may work in the gitsigns case, since they probably set the fg for the culhl to the same value.

The correct way would be to apply both hl groups, but I don't think that's possible with the statuscolumn syntax.

🤔 Will keep poking at it later.