feat(nvim): extend CursorLine into the status column

dots/.config/nvim/lua/plugins/configs/kanagawa.lua

@@ -83,6 +83,9 @@ return {
                         ["@keyword.import"] = { link = "@include" },
                         ["@keyword.repeat"] = { link = "@repeat" },
 
+                        CursorLineNr = { fg = colors.roninYellow, bg = palette.theme.ui.bg_p1 },
+                        CursorLineFold = { fg = colors.crystalBlue, bg = palette.theme.ui.bg_p1 },
+                        CursorLineSign = { bg = palette.theme.ui.bg_p1 },
                         WinSeparator = { fg = colors.fujiGray },
                         StatusLine = { fg = colors.fujiWhite, bg = colors.sumiInk0 },
                         WinBar = { fg = colors.fujiWhite, bg = nil },

dots/.config/nvim/lua/plugins/configs/statuscol.lua

@@ -3,13 +3,37 @@ return {
         "luukvbaal/statuscol.nvim",
         opts = function()
             local builtin = require("statuscol.builtin")
+            local last_sign_def_len = 0
+
+            -- HACK: Ensure all signs get the correct CursorLineSign set to their "culhl" value
+            -- This, in effect, extends the CursorLine background highlight into the signcolumn
+            vim.uv.new_timer():start(50, 1000, vim.schedule_wrap(function()
+                -- Make all signs support "CusorLine.*" highlights
+                local signs_defined = vim.fn.sign_getdefined()
+                if #signs_defined == last_sign_def_len or #signs_defined == 0 then
+                    return
+                end
+                last_sign_def_len = signs_defined
+                local bg = vim.api.nvim_get_hl(0, { name = "SignColumn", link = false }).bg
+                local cl_bg = vim.api.nvim_get_hl(0, { name = "CursorLineSign", link = false }).bg
+                for _, sign in ipairs(signs_defined) do
+                    local name = sign.texthl
+                    if name then
+                        local hl = vim.api.nvim_get_hl(0, { name = name, link = false })
+                        vim.api.nvim_set_hl(0, name, { fg = hl.fg, bg = bg })
+                        name = name .. "Cul"
+                        vim.api.nvim_set_hl(0, name, { fg = hl.fg, bg = cl_bg })
+                        vim.fn.sign_define(sign.name, { culhl = name })
+                    end
+                end
+            end))
+
             return {
-                foldfunc = "builtin",
                 setopt = true,
                 relculright = false,
                 segments = {
-                    { text = { "%s" }, click = "v:lua.ScSa" },
+                    { text = { "%s" },                       click = "v:lua.ScSa" },
-                    { text = { builtin.lnumfunc }, click = "v:lua.ScLa" },
+                    { text = { builtin.lnumfunc },           click = "v:lua.ScLa" },
                     { text = { " ", builtin.foldfunc, " " }, click = "v:lua.ScFa" },
                 },
             }
@@ -23,6 +47,8 @@ return {
             current_line_blame_opts = {
                 delay = 0,
             },
-        },
+            -- HACK: This allows the gitsigns to correctly use the culhl for their bg
+            _extmark_signs = false
+        }
     },
 }