Recovered file has extra ^M

[MIYOSHI Masanori]

In Emacs on Windows, A recovered file has an extra ^M at the end
of each line.

The following inconsistency seems to cause the trouble.

When Emacs writes out an auto-save file, Emacs doesn't set its
eol type explicitly.  So CR/LF is selected for it on Windows.

On the contrary, when Emacs reads the auto-save file, Emacs
assumes that its eol type is LF.

Is this assumption necessary?

In choose_write_coding_system()@fileio.c
>  if (auto_saving
>      && NILP (Fstring_equal (current_buffer->filename,
>                             current_buffer->auto_save_file_name)))
>    {
>      /* We use emacs-mule for auto saving... */
>      setup_coding_system (Qemacs_mule, coding);
>      /* ... but with the special flag to indicate not to strip off
>        leading code of eight-bit-control chars.  */
>      coding->flags = 1;
>      goto done_setup_coding;
>    }

In Finsert_file_contents()@fileio.c
>  if (EQ (Vcoding_system_for_read, Qauto_save_coding))
>    {
...
>      coding.eol_type = CODING_EOL_LF;
...
>    }

--
MIYOSHI Masanori