Use `\r\n` for new files on Windows (#1596)

* Use `\r\n` for new files on Windows

* Add `config.line_endings`

data/core/config.lua

@@ -153,6 +153,12 @@ config.tab_type = "soft"
 ---@type boolean
 config.keep_newline_whitespace = false
 
+---Default line endings for new files.
+---
+---Defaults to `crlf` (`\r\n`) on Windows and `lf` (`\n`) on everything else.
+---@type "crlf" | "lf"
+config.line_endings = PLATFORM == "Windows" and "crlf" or "lf"
+
 ---Maximum number of characters per-line for the line guide.
 ---
 ---Defaults to 80.

data/core/doc/init.lua

@@ -28,6 +28,9 @@ function Doc:new(filename, abs_filename, new_file)
       self:load(filename)
     end
   end
+  if new_file then
+    self.crlf = config.line_endings == "crlf"
+  end
 end
 
 function Doc:reset()