fix(#2523): live filter overlay width calculation (#2524)

* fix: live filter overlay width calculation

* refactor: simplify calculate_width return if not wininfo

---------

Co-authored-by: Alexander Courtis <[email protected]>

Author: geril2207

lua/nvim-tree/live-filter.lua

@@ -105,25 +105,32 @@ local function configure_buffer_overlay()
   vim.api.nvim_buf_set_keymap(overlay_bufnr, "i", "<CR>", "<cmd>stopinsert<CR>", {})
 end
 
+local function calculate_overlay_win_width()
+  local wininfo = vim.fn.getwininfo(view.get_winnr())[1]
+
+  if wininfo then
+    return wininfo.width - wininfo.textoff - #M.prefix
+  end
+
+  return 20
+end
+
 local function create_overlay()
-  local min_width = 20
   if view.View.float.enable then
     -- don't close nvim-tree float when focus is changed to filter window
     vim.api.nvim_clear_autocmds {
       event = "WinLeave",
       pattern = "NvimTree_*",
       group = vim.api.nvim_create_augroup("NvimTree", { clear = false }),
     }
-
-    min_width = min_width - 2
   end
 
   configure_buffer_overlay()
   overlay_winnr = vim.api.nvim_open_win(overlay_bufnr, true, {
     col = 1,
     row = 0,
     relative = "cursor",
-    width = math.max(min_width, vim.api.nvim_win_get_width(view.get_winnr()) - #M.prefix - 2),
+    width = calculate_overlay_win_width(),
     height = 1,
     border = "none",
     style = "minimal",