update lualine conf

lua/config/statusline.lua

@@ -6,6 +6,19 @@ local function spell()
   return ""
 end
 
+local function trailing_space()
+  local trailing_space_pos = vim.b.trailing_whitespace_pos
+
+  local msg = ""
+  if #trailing_space_pos > 0 then
+    -- Note that lua index is 1-based, not zero based!!!
+    local line = trailing_space_pos[1][1]
+    msg = string.format("[%d]trailing", line)
+  end
+
+  return msg
+end
+
 require("lualine").setup({
   options = {
     icons_enabled = true,
@@ -17,11 +30,38 @@ require("lualine").setup({
   },
   sections = {
     lualine_a = { "mode" },
-    lualine_b = { "branch", "diff",  },
-    lualine_c = { spell, "filename" },
-    lualine_x = { "encoding", "fileformat", "filetype" },
+    lualine_b = { "branch", "diff" },
+    lualine_c = {
+      {
+        spell,
+        color = "Cursor"
+      },
+      "filename"
+    },
+    lualine_x = {
+      "encoding",
+      {
+        "fileformat",
+        symbols = {
+          unix = "unix",
+          dos = "win",
+          mac = "mac",
+        },
+      },
+      "filetype",
+    },
     lualine_y = { "progress" },
-    lualine_z = { "location", { "diagnostics", sources = { "nvim_lsp" } }},
+    lualine_z = {
+      "location",
+      {
+        "diagnostics",
+        sources = { "nvim_lsp" }
+      },
+      {
+        trailing_space,
+        color = "WarningMsg"
+      }
+    },
   },
   inactive_sections = {
     lualine_a = {},
@@ -32,6 +72,6 @@ require("lualine").setup({
     lualine_z = {},
   },
   tabline = {},
-  extensions = {},
+  extensions = {'quickfix', 'fugitive'},
 })