[Emms-patches] [COMMIT] Ask before saving over an existing playlist file.

[Yoni Rabkin]

As suggested on the mailing list, this feature can be turned off. The
appropriate documentation has been added to the Emms manual.

Signed-off-by: Yoni Rabkin <address@hidden>
---
 doc/emms.texinfo             |   11 +++++++----
 lisp/emms-source-playlist.el |    8 +++++++-
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/doc/emms.texinfo b/doc/emms.texinfo
index 54cd72d..f98aa03 100644
--- a/doc/emms.texinfo
+++ b/doc/emms.texinfo
@@ -758,8 +758,8 @@ An Emms source for multiple directory trees - either 
@var{dir}, or the
 value of @var{emms-source-file-default-directory}.
 @end defun
 @defun emms-source-playlist file
-An EMMS source for playlists.  See `emms-source-playlist-formats' for
-a list of supported formats.
+An EMMS source for playlists.  See @var{emms-source-playlist-formats}
+for a list of supported formats.
 @end defun
 @defun emms-source-playlist-native file
 An EMMS source for a native EMMS playlist file.
@@ -845,7 +845,7 @@ buffer is also selected.
 
 @defun emms-playlist-save &optional format file
 Store the current playlist to FILE as the type FORMAT.  The default
-format is specified by `emms-source-playlist-default-format'.
+format is specified by @var{emms-source-playlist-default-format}.
 @end defun
 
 The current Emms playlist buffer is stored in the variable
@@ -1005,7 +1005,10 @@ Put the interactive playlist buffer at the end of the 
list of all
 buffers.
 @item C-x C-s
 @findex emms-playlist-save
-Save the current playlist buffer to a file.
+Save the current playlist buffer to a file. By default, Emms will ask
+you for confirmation before overwriting an existing playlist. You can
+silently overwrite existing playlist by setting
address@hidden to nil.
 @item ?
 @findex describe-mode
 Describe the mode.
diff --git a/lisp/emms-source-playlist.el b/lisp/emms-source-playlist.el
index 35ed254..1aeaa9c 100644
--- a/lisp/emms-source-playlist.el
+++ b/lisp/emms-source-playlist.el
@@ -71,6 +71,12 @@ If this is nil, you will be prompted for a format to use."
                  (symbol :tag "Other"))
   :group 'emms)
 
+(defcustom emms-source-playlist-ask-before-overwrite t
+  "*Ask before saving over an existing playlist.
+If this is nil, existig playlists will be quitely overwritten."
+  :type 'boolean
+  :group 'emms)
+
 ;;; General playlist
 
 (defsubst emms-source-playlist-p-sym (format)
@@ -139,7 +145,7 @@ The default format is specified by 
`emms-source-playlist-default-format'."
                                     (current-buffer))
                                   (current-buffer))
     (let ((backup-inhibited t))
-      (write-file file))))
+      (write-file file emms-source-playlist-ask-before-overwrite))))
 
 (defun emms-source-playlist-determine-format (&optional parse-files)
   "Determine the playlist format of the current buffer.
-- 
debian.1.5.6.1.19.ge6b2