feat: add scope highlight to indent-blankline

lua/plugins/indent-blankline.lua

@@ -16,10 +16,38 @@ return {
         main = "ibl",
         ---@module "ibl"
         ---@type ibl.config
-        opts = {
+        config = function(opts)
+            local highlight = {
+                "RainbowRed",
+                "RainbowYellow",
+                "RainbowBlue",
+                "RainbowOrange",
+                "RainbowGreen",
+                "RainbowViolet",
+                "RainbowCyan",
+            }
+            local hooks = require "ibl.hooks"
+            -- create the highlight groups in the highlight setup hook, so they are reset
+            -- every time the colorscheme changes
+            hooks.register(hooks.type.HIGHLIGHT_SETUP, function()
+                vim.api.nvim_set_hl(0, "RainbowRed", { fg = "#E06C75" })
+                vim.api.nvim_set_hl(0, "RainbowYellow", { fg = "#E5C07B" })
+                vim.api.nvim_set_hl(0, "RainbowBlue", { fg = "#61AFEF" })
+                vim.api.nvim_set_hl(0, "RainbowOrange", { fg = "#D19A66" })
+                vim.api.nvim_set_hl(0, "RainbowGreen", { fg = "#98C379" })
+                vim.api.nvim_set_hl(0, "RainbowViolet", { fg = "#C678DD" })
+                vim.api.nvim_set_hl(0, "RainbowCyan", { fg = "#56B6C2" })
+            end)
+
+            vim.g.rainbow_delimiters = { highlight = highlight }
+            require("ibl").setup {
                 scope = {
-                enabled = true
+                    enabled = true,
+                    highlight = highlight
                 }
             }
+
+            hooks.register(hooks.type.SCOPE_HIGHLIGHT, hooks.builtin.scope_highlight_from_extmark)
+        end
     }
 }