23.0.60; make-directory errors if the given dir already exists

[Tassilo Horn]

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Start emacs -Q, go to *scratch* and eval

  (make-directory "/tmp")

or use any other existing directory.  You should get this error:

Debugger entered--Lisp error: (file-already-exists "File exists" "/tmp")
  make-directory-internal("/tmp")
  make-directory("/tmp")
  eval((make-directory "/tmp"))
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
  call-interactively(eval-last-sexp nil nil)

But the docstring of `make-directory' reads:

,----[ C-h f make-directory RET ]
| make-directory is an interactive Lisp function in `files.el'.
| 
| (make-directory dir &optional parents)
| 
| Create the directory dir and any nonexistent parent dirs.
| If dir already exists as a directory, do nothing.
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[...]

`----

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.0.60/etc/DEBUG for instructions.


In GNU Emacs 23.0.60.2 (i686-pc-linux-gnu, GTK+ Version 2.12.8)
 of 2008-03-13 on localhost
Windowing system distributor `The X.Org Foundation', version 11.0.10400090
configured using `configure  '--prefix=/usr' '--host=i686-pc-linux-gnu' 
'--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' 
'--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=-emacs-23' 
'--infodir=/usr/share/info/emacs-23' '--without-carbon' '--with-sound' 
'--with-x' '--with-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' 
'--with-rsvg' '--with-tiff' '--with-xpm' '--enable-font-backend' 
'--with-freetype' '--with-xft' '--with-libotf' '--with-m17n-flt' 
'--with-x-toolkit=gtk' '--without-hesiod' '--with-kerberos' '--with-kerberos5' 
'--with-gpm' '--with-dbus' '--build=i686-pc-linux-gnu' 
'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 
'CFLAGS=-march=i686 -mtune=prescott -O2 -pipe' 'LDFLAGS=-Wl,-O1 
-Wl,--as-needed''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.utf8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  icomplete-mode: t
  window-number-meta-mode: t
  window-number-mode: t
  savehist-mode: t
  exec-abbrev-cmd-mode: t
  show-paren-mode: t
  which-function-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t

Recent input:
t h a t SPC e r r o r . SPC SPC N o w SPC I SPC u p 
d a t e d SPC m y SPC e m a c s SPC a n d SPC I SPC 
c a n SPC r e p r o d u c e SPC t h e SPC p r o b l 
e m . SPC SPC I ' l l SPC r e p o r t SPC a n <backspace> 
SPC b u g SPC f o r SPC t h a t . M-q <return> <return> 
B y e , <return> T a s s i l o C-c C-c M-u c <return> 
<return> S W C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k 
C-k H i SPC R i c h a r d , <return> <down> M-q <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <up> <up> <up> M-q <down> <down> <backspace> 
C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k 
C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k 
C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k 
C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k C-k <return> 
A h , SPC m a y b e SPC t h a t ' s SPC n e w SPC i 
n SPC t h e SPC v e r s i o n SPC t h a t SPC c o m 
e s SPC w i t h SPC e m a c s SPC 2 3 . <return> <return> 
B y e , <return> T a s s i l o C-c C-c c M-x r e b 
<return> <return>

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