NTEmacs fails copy-file

NTEmacs fails copy-file

[Tak Ota]

On NTEmacs 21.2.50, when `copy-file' function take a FILE that has a
read only file attribute, the function fails with an error.  Following
patch corrects this problem.  The same bug exists in 21.1.90 also.

-Tak

*** fileio.c.orig	Mon Mar  4 07:00:02 2002
--- fileio.c	Thu Mar  7 23:04:07 2002
***************
*** 2408,2420 ****
      report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil)));
    else if (NILP (keep_time))
      {
        EMACS_TIME now;
        EMACS_GET_TIME (now);
        if (set_file_times (XSTRING (encoded_newname)->data,
  			  now, now))
! 	Fsignal (Qfile_date_error,
! 		 Fcons (build_string ("Cannot set file date"),
! 			Fcons (newname, Qnil)));
      }
  #else /* not WINDOWSNT */
    ifd = emacs_open (XSTRING (encoded_file)->data, O_RDONLY, 0);
--- 2408,2426 ----
      report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil)));
    else if (NILP (keep_time))
      {
+       DWORD attributes = GetFileAttributes(XSTRING (encoded_newname)->data);
        EMACS_TIME now;
        EMACS_GET_TIME (now);
+       SetFileAttributes(XSTRING (encoded_newname)->data, attributes & ~FILE_ATTRIBUTE_READONLY);
        if (set_file_times (XSTRING (encoded_newname)->data,
  			  now, now))
! 	{
! 	  SetFileAttributes(XSTRING (encoded_newname)->data, attributes);
! 	  Fsignal (Qfile_date_error,
! 		   Fcons (build_string ("Cannot set file date"),
! 			  Fcons (newname, Qnil)));
! 	}
!       SetFileAttributes(XSTRING (encoded_newname)->data, attributes);
      }
  #else /* not WINDOWSNT */
    ifd = emacs_open (XSTRING (encoded_file)->data, O_RDONLY, 0);

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