cleanup: remove unnecessary option restore_win_options

This was only necessary to begin with because I was using `vim.wo` to
set window options. I mistakenly thought that would set the option as
window-local, but it did not. This was fixed in
6f8bf067c0. Now all the window options
should function as expected without the extra logic.

README.md

@@ -150,12 +150,10 @@ require("oil").setup({
     conceallevel = 3,
     concealcursor = "nvic",
   },
-  -- Restore window options to previous values when leaving an oil buffer
-  restore_win_options = true,
+  -- Send deleted files to the trash instead of permanently deleting them (:help oil-trash)
+  delete_to_trash = false,
   -- Skip the confirmation popup for simple operations
   skip_confirm_for_simple_edits = false,
-  -- Deleted files will be removed with the trash_command (below).
-  delete_to_trash = false,
   -- Change this to customize the command used when deleting to trash
   trash_command = "trash-put",
   -- Selecting a new/moved/renamed file or directory will prompt you to save changes first

doc/oil.txt

@@ -41,12 +41,10 @@ OPTIONS                                                              *oil-option
         conceallevel = 3,
         concealcursor = "nvic",
       },
-      -- Restore window options to previous values when leaving an oil buffer
-      restore_win_options = true,
+      -- Send deleted files to the trash instead of permanently deleting them (:help oil-trash)
+      delete_to_trash = false,
       -- Skip the confirmation popup for simple operations
       skip_confirm_for_simple_edits = false,
-      -- Deleted files will be removed with the trash_command (below).
-      delete_to_trash = false,
       -- Change this to customize the command used when deleting to trash
       trash_command = "trash-put",
       -- Selecting a new/moved/renamed file or directory will prompt you to save changes first

lua/oil/config.lua

@@ -26,12 +26,10 @@ local default_config = {
     conceallevel = 3,
     concealcursor = "nvic",
   },
-  -- Restore window options to previous values when leaving an oil buffer
-  restore_win_options = true,
+  -- Send deleted files to the trash instead of permanently deleting them (:help oil-trash)
+  delete_to_trash = false,
   -- Skip the confirmation popup for simple operations
   skip_confirm_for_simple_edits = false,
-  -- Deleted files will be removed with the trash_command (below).
-  delete_to_trash = false,
   -- Change this to customize the command used when deleting to trash
   trash_command = "trash-put",
   -- Selecting a new/moved/renamed file or directory will prompt you to save changes first

lua/oil/init.lua

@@ -719,7 +719,6 @@ M.save = function(opts)
 end
 
 local function restore_alt_buf()
-  local config = require("oil.config")
   if vim.bo.filetype == "oil" then
     require("oil.view").set_win_options()
     vim.api.nvim_win_set_var(0, "oil_did_enter", true)
@@ -742,10 +741,6 @@ local function restore_alt_buf()
         end
       end
     end
-
-    if config.restore_win_options then
-      require("oil.view").restore_win_options()
-    end
   end
 end
 

lua/oil/view.lua

@@ -171,28 +171,10 @@ end
 M.set_win_options = function()
   local winid = vim.api.nvim_get_current_win()
   for k, v in pairs(config.win_options) do
-    if config.restore_win_options then
-      local varname = "_oil_" .. k
-      if not pcall(vim.api.nvim_win_get_var, winid, varname) then
-        local prev_value = vim.wo[k]
-        vim.api.nvim_win_set_var(winid, varname, prev_value)
-      end
-    end
     vim.api.nvim_set_option_value(k, v, { scope = "local", win = winid })
   end
 end
 
-M.restore_win_options = function()
-  local winid = vim.api.nvim_get_current_win()
-  for k in pairs(config.win_options) do
-    local varname = "_oil_" .. k
-    local has_opt, opt = pcall(vim.api.nvim_win_get_var, winid, varname)
-    if has_opt then
-      vim.api.nvim_set_option_value(k, opt, { scope = "local", win = winid })
-    end
-  end
-end
-
 ---Get a list of visible oil buffers and a list of hidden oil buffers
 ---@note
 --- If any buffers are modified, return values are nil