fix: work around neovim open_win bug (#15)

Per neovim/neovim#12295, it seems we cannot
open *and* enter a floating window during vim startup. To work around
that, we use vim.schedule_wrap() on the entrypoints. This should not
produce any noticeable effect in functionality.

lua/dressing/input.lua

@@ -160,7 +160,9 @@ M.trigger_completion = function()
 end
 
 setmetatable(M, {
-  __call = function(_, opts, on_confirm)
+  -- use schedule_wrap to avoid a bug when vim opens
+  -- (see https://github.com/stevearc/dressing.nvim/issues/15)
+  __call = vim.schedule_wrap(function(_, opts, on_confirm)
     vim.validate({
       on_confirm = { on_confirm, "function", false },
     })
@@ -284,7 +286,7 @@ setmetatable(M, {
     vim.cmd("startinsert!")
     close_completion_window()
     M.highlight()
-  end,
+  end),
 })
 
 return M

lua/dressing/select/init.lua

@@ -14,7 +14,9 @@ local function get_backend(config)
   return require("dressing.select.builtin"), "builtin"
 end
 
-return function(items, opts, on_choice)
+-- use schedule_wrap to avoid a bug when vim opens
+-- (see https://github.com/stevearc/dressing.nvim/issues/15)
+return vim.schedule_wrap(function(items, opts, on_choice)
   vim.validate({
     items = {
       items,
@@ -45,4 +47,4 @@ return function(items, opts, on_choice)
 
   local backend, name = get_backend(config)
   backend.select(config[name], items, opts, on_choice)
-end
+end)