fix: stop using vim.wo to set window options

vim.wo also affects the global status of the option. We only want to set
the window-local option.

lua/oil/init.lua

@@ -277,7 +277,7 @@ M.open_float = function(dir)
   local winid = vim.api.nvim_open_win(bufnr, true, win_opts)
   vim.w[winid].is_oil_win = true
   for k, v in pairs(config.float.win_options) do
-    vim.wo[winid][k] = v
+    vim.api.nvim_set_option_value(k, v, { scope = "local", win = winid })
   end
   local autocmds = {}
   table.insert(
@@ -540,7 +540,7 @@ M.select = function(opts)
       })
     end
     if opts.preview then
-      vim.wo.previewwindow = true
+      vim.api.nvim_set_option_value("previewwindow", true, { scope = "local", win = 0 })
       vim.w.oil_entry_id = entry.id
       vim.api.nvim_set_current_win(prev_win)
     end

lua/oil/mutator/preview.lua

@@ -107,7 +107,7 @@ M.show = vim.schedule_wrap(function(actions, should_confirm, cb)
   vim.bo[bufnr].filetype = "oil_preview"
   vim.bo[bufnr].syntax = "oil_preview"
   for k, v in pairs(config.preview.win_options) do
-    vim.wo[winid][k] = v
+    vim.api.nvim_set_option_value(k, v, { scope = "local", win = winid })
   end
 
   render_lines(winid, bufnr, lines)

lua/oil/mutator/progress.lua

@@ -59,7 +59,7 @@ function Progress:show(opts)
   })
   vim.bo[self.bufnr].filetype = "oil_progress"
   for k, v in pairs(config.preview.win_options) do
-    vim.wo[self.winid][k] = v
+    vim.api.nvim_set_option_value(k, v, { scope = "local", win = self.winid })
   end
   table.insert(
     self.autocmds,

lua/oil/util.lua

@@ -348,7 +348,11 @@ M.add_title_to_win = function(winid, opts)
       noautocmd = true,
     })
     winid_map[winid] = title_winid
-    vim.wo[title_winid].winblend = vim.wo[winid].winblend
+    vim.api.nvim_set_option_value(
+      "winblend",
+      vim.wo[winid].winblend,
+      { scope = "local", win = title_winid }
+    )
     vim.bo[bufnr].bufhidden = "wipe"
 
     local update_autocmd = vim.api.nvim_create_autocmd("BufWinEnter", {
@@ -397,7 +401,11 @@ M.add_title_to_win = function(winid, opts)
   end
   vim.api.nvim_buf_set_lines(bufnr, 0, -1, true, { " " .. title .. " " })
   vim.bo[bufnr].modified = false
-  vim.wo[title_winid].winhighlight = "Normal:FloatTitle,NormalFloat:FloatTitle"
+  vim.api.nvim_set_option_value(
+    "winhighlight",
+    "Normal:FloatTitle,NormalFloat:FloatTitle",
+    { scope = "local", win = title_winid }
+  )
 end
 
 ---@param action oil.Action

lua/oil/view.lua

@@ -162,7 +162,7 @@ M.set_win_options = function()
         vim.api.nvim_win_set_var(winid, varname, prev_value)
       end
     end
-    vim.wo[winid][k] = v
+    vim.api.nvim_set_option_value(k, v, { scope = "local", win = winid })
   end
 end
 
@@ -172,7 +172,7 @@ M.restore_win_options = function()
     local varname = "_oil_" .. k
     local has_opt, opt = pcall(vim.api.nvim_win_get_var, winid, varname)
     if has_opt then
-      vim.wo[winid][k] = opt
+      vim.api.nvim_set_option_value(k, opt, { scope = "local", win = winid })
     end
   end
 end