WIP: properly escape paths in Windows

Still not working with $ (try a file named a$PATH.txt).
:edit a$PATH.txt will expand the variable
:edit a\$PATH.txt will treat it as a path separator, so a/$PATH.txt

lua/oil/init.lua

@@ -423,6 +423,7 @@ end
 M.select = function(opts, callback)
   local cache = require("oil.cache")
   local config = require("oil.config")
+  local fs = require("oil.fs")
   opts = vim.tbl_extend("keep", opts or {}, {})
   local function finish(err)
     if err then
@@ -558,9 +559,11 @@ M.select = function(opts, callback)
       end
     end
 
+    print("url", url, "entry", entry.name)
     -- Normalize the url before opening to prevent needing to rename them inside the BufReadCmd
     -- Renaming buffers during opening can lead to missed autocmds
     get_edit_path(function(normalized_url)
+      print("Normalized url", normalized_url)
       local mods = {
         vertical = opts.vertical,
         horizontal = opts.horizontal,
@@ -569,11 +572,14 @@ M.select = function(opts, callback)
         emsg_silent = true,
       }
       -- If we're editing a file on disk, shorten the path prior to :edit so the
-      -- display name will show up shortened
-      if adapter.name == "files" and not util.parse_url(normalized_url) then
+      -- display name will show up shortened.
+      -- Don't do this on Windows, where ~/home/path.txt doesn't work
+      if adapter.name == "files" and not util.parse_url(normalized_url) and not fs.is_windows then
         normalized_url = require("oil.fs").shorten_path(normalized_url)
+        print("Shortened", normalized_url)
       end
       local filename = util.escape_filename(normalized_url)
+      print("Escaped", filename)
 
       -- If we're previewing a file that hasn't been opened yet, make sure it gets deleted after we
       -- close the window

lua/oil/util.lua

@@ -1,5 +1,6 @@
 local config = require("oil.config")
 local constants = require("oil.constants")
+local fs = require("oil.fs")
 
 local M = {}
 
@@ -19,8 +20,11 @@ end
 ---@param filename string
 ---@return string
 M.escape_filename = function(filename)
-  local ret = filename:gsub("([%%#$])", "\\%1")
-  return ret
+  if fs.is_windows then
+    filename = filename:gsub("\\", "/")
+    filename = filename:gsub("([$])", "\\%1")
+  end
+  return vim.fn.fnameescape(filename)
 end
 
 local _url_escape_chars = {