Merge from emacs--devo--0

Patches applied:

 * emacs--devo--0  (patch 803-805)

   - Update from CVS

Revision: emacs@sv.gnu.org/emacs--unicode--0--patch-227

1 files changed, 26 insertions, 6 deletions

diff --git a/lisp/files.el b/lisp/files.el
index 952736f06d7..69ed54c5633 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -1051,6 +1051,12 @@ Recursive uses of the minibuffer will not be affected."
 	     ,@body)
 	 (remove-hook 'minibuffer-setup-hook ,hook)))))
 
+(defcustom find-file-confirm-nonexistent-file nil
+  "If non-nil, `find-file' requires confirmation before visiting a new file."
+  :group 'find-file
+  :version "23.1"
+  :type 'boolean)
+
 (defun find-file-read-args (prompt mustmatch)
   (list (let ((find-file-default
 	       (and buffer-file-name
@@ -1074,7 +1080,9 @@ suppress wildcard expansion by setting `find-file-wildcards' to nil.
 
 To visit a file without any kind of conversion and without
 automatically choosing a major mode, use \\[find-file-literally]."
-  (interactive (find-file-read-args "Find file: " nil))
+  (interactive
+   (find-file-read-args "Find file: "
+                        (if find-file-confirm-nonexistent-file 'confirm-only)))
   (let ((value (find-file-noselect filename nil nil wildcards)))
     (if (listp value)
 	(mapcar 'switch-to-buffer (nreverse value))
@@ -1091,7 +1099,9 @@ type M-n to pull it into the minibuffer.
 
 Interactively, or if WILDCARDS is non-nil in a call from Lisp,
 expand wildcards (if any) and visit multiple files."
-  (interactive (find-file-read-args "Find file in other window: " nil))
+  (interactive
+   (find-file-read-args "Find file in other window: "
+                        (if find-file-confirm-nonexistent-file 'confirm-only)))
   (let ((value (find-file-noselect filename nil nil wildcards)))
     (if (listp value)
 	(progn
@@ -1111,7 +1121,9 @@ type M-n to pull it into the minibuffer.
 
 Interactively, or if WILDCARDS is non-nil in a call from Lisp,
 expand wildcards (if any) and visit multiple files."
-  (interactive (find-file-read-args "Find file in other frame: " nil))
+  (interactive
+   (find-file-read-args "Find file in other frame: "
+                        (if find-file-confirm-nonexistent-file 'confirm-only)))
   (let ((value (find-file-noselect filename nil nil wildcards)))
     (if (listp value)
 	(progn
@@ -1134,7 +1146,9 @@ file names with wildcards."
   "Edit file FILENAME but don't allow changes.
 Like \\[find-file] but marks buffer as read-only.
 Use \\[toggle-read-only] to permit editing."
-  (interactive (find-file-read-args "Find file read-only: " nil))
+  (interactive
+   (find-file-read-args "Find file read-only: "
+                        (if find-file-confirm-nonexistent-file 'confirm-only)))
   (unless (or (and wildcards find-file-wildcards
 		   (not (string-match "\\`/:" filename))
 		   (string-match "[[*?]" filename))
@@ -1149,7 +1163,9 @@ Use \\[toggle-read-only] to permit editing."
   "Edit file FILENAME in another window but don't allow changes.
 Like \\[find-file-other-window] but marks buffer as read-only.
 Use \\[toggle-read-only] to permit editing."
-  (interactive (find-file-read-args "Find file read-only other window: " nil))
+  (interactive
+   (find-file-read-args "Find file read-only other window: "
+                        (if find-file-confirm-nonexistent-file 'confirm-only)))
   (unless (or (and wildcards find-file-wildcards
 		   (not (string-match "\\`/:" filename))
 		   (string-match "[[*?]" filename))
@@ -1164,7 +1180,9 @@ Use \\[toggle-read-only] to permit editing."
   "Edit file FILENAME in another frame but don't allow changes.
 Like \\[find-file-other-frame] but marks buffer as read-only.
 Use \\[toggle-read-only] to permit editing."
-  (interactive (find-file-read-args "Find file read-only other frame: " nil))
+  (interactive
+   (find-file-read-args "Find file read-only other frame: "
+                        (if find-file-confirm-nonexistent-file 'confirm-only)))
   (unless (or (and wildcards find-file-wildcards
 		   (not (string-match "\\`/:" filename))
 		   (string-match "[[*?]" filename))
@@ -4021,6 +4039,8 @@ or multiple mail buffers, etc."
 
 (defun make-directory (dir &optional parents)
   "Create the directory DIR and any nonexistent parent dirs.
+If DIR already exists as a directory, do nothing.
+
 Interactively, the default choice of directory to create
 is the current default directory for file names.
 That is useful when you have visited a file in a nonexistent directory.