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From: Rugxulo <rugxulo AT gmail DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Emacs pretest 23.0.96 is available
Date: Thu, 23 Jul 2009 18:48:03 -0700 (PDT)
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hi,

On Jul 23, 6:19=A0am, Sven Joachim <svenj DOT  DOT  DOT  AT gmx DOT de> wrote:
> On 2009-07-23 12:38 +0200, Tomasz Zbro=BFek wrote:
>
>
> > it's a bit strange, following command does not work :
>
> > mkdir c:\emacs-23.0-9\nextstep\Cocoa\Emacs.bas\Contents\Resource
> > \English.lpr
>
> The path name is too long, it exceeds the DOS limit of 64 bytes (sans
> leading c:\ ).

For reference, here's what mkdir.c from libc says:

----------------------------------------------------
#if 0
  /* It seems that no version of DOS, including DOS 8, which is part
     of Windows/ME, implements this function.  Without LFN, this fails
     mkdir on Windows/ME.  Disabled.  */
  else if ((_osmajor > 7 && _osmajor < 10) /* OS/2 returns v10 and
above */
	   || (_osmajor =3D=3D 7 && _osminor >=3D 20))
  {
    /* DOS 7.20 (Windows 98) and later supports a new function with
       a maximum path length of 128 characters instead of 67.  This
       is important for deeply-nested directories.  */
    r.x.ax =3D 0x43ff;
    r.x.bp =3D 0x5053;
    r.h.cl =3D 0x39;
  }
#endif
----------------------------------------------------

http://www.delorie.com/djgpp/doc/rbinter/id/30/28.html   (mkdir,
rename)

"Note:	these functions are equivalent to INT 21/AH=3D39h and INT 21/
AH=3D56h,
	  but with a maximum path length of 128 characters instead of 67;
	  unlike INT 21/AX=3D71xxh, these functions are available under bare
	  DOS and not just in a Windows DOS box"

However, I guess it didn't work in all cases since it's disabled. I
don't know the details, but I do wonder why.