Update

dot_config/nvim/lua/plugins/scrollbar.lua

@@ -0,0 +1,86 @@
+vim.pack.add({
+  { src = "https://github.com/petertriho/nvim-scrollbar" },
+})
+
+-- Show illuminated word matches as scrollbar marks. nvim-scrollbar's render
+-- autocmds (BufWinEnter/WinEnter/TextChanged/VimResized/WinScrolled) do not fire
+-- on CursorMoved, which is when illuminate refreshes its references, so hook
+-- those events directly, mirroring how the built-in diagnostic handler works.
+-- illuminate also refreshes its own refs ~(delay 100ms) after CursorMoved, so
+-- re-run the highlight refresh on a small debounce for snappy bars.
+local utils = require("scrollbar.utils")
+local render = require("scrollbar").throttled_render
+
+local function update_illuminate_marks()
+  local bufnr = vim.api.nvim_get_current_buf()
+  local config = require("scrollbar.config").get()
+  if
+    config.show == false
+    or not vim.api.nvim_buf_is_valid(bufnr)
+    or vim.tbl_contains(config.excluded_buftypes, vim.bo[bufnr].buftype)
+    or vim.tbl_contains(config.excluded_filetypes, vim.bo[bufnr].filetype)
+  then
+    return
+  end
+
+  local ok, reference = pcall(require, "illuminate.reference")
+  if not ok then
+    return
+  end
+
+  -- illuminate stores refs as { {0-indexed line, col}, {0-indexed line, col} },
+  -- sorted. Several refs can share a line, so keep one mark per line.
+  local illuminate_marks = {}
+  local last_line = -1
+  for _, ref in ipairs(reference.buf_get_references(bufnr)) do
+    local line = ref[1][1]
+    if line ~= last_line then
+      last_line = line
+      illuminate_marks[#illuminate_marks + 1] = {
+        line = line,
+        text = "≡",
+        type = "Illuminate",
+        level = 1,
+      }
+    end
+  end
+
+  local marks = utils.get_scrollbar_marks(bufnr)
+  marks.Illuminate = illuminate_marks
+  utils.set_scrollbar_marks(bufnr, marks)
+
+  render()
+end
+
+vim.api.nvim_create_autocmd({ "CursorMoved", "CursorHold", "TextChanged", "BufEnter", "WinEnter" }, {
+  group = vim.api.nvim_create_augroup("scrollbar_illuminate", { clear = true }),
+  callback = function(args)
+    update_illuminate_marks()
+    if args.event == "CursorMoved" or args.event == "TextChanged" then
+      vim.defer_fn(update_illuminate_marks, 250)
+    end
+  end,
+})
+
+require("scrollbar").setup({
+  excluded_filetypes = { "neo-tree" },
+  handle = {
+    highlight = "PmenuSbar",
+  },
+  marks = {
+    Illuminate = { text = "≡", priority = 8, highlight = "Special" },
+    Search = { highlight = "DiagnosticVirtualTextInfo" },
+    Error = { highlight = "DiagnosticFloatingError" },
+    Warn = { highlight = "DiagnosticFloatingWarn" },
+    Info = { highlight = "DiagnosticFloatingInfo" },
+    Hint = { highlight = "DiagnosticFloatingHint" },
+    GitAdd = { highlight = "GitSignsAdd" },
+    GitChange = { highlight = "GitSignsChange" },
+    GitDelete = { highlight = "GitSignsDelete" },
+  },
+  handlers = {
+    search = false, -- requires hlslens
+    diagnostic = true,
+    gitsigns = true,
+  },
+})