;;; format.el --- read and save files in multiple formats
;; Copyright (C) 1994, 1995, 1997, 1999, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
;; Author: Boris Goldowsky <boris@gnu.org>
nil
iso-spanish iso-cvt-read-only t nil))
"List of information about understood file formats.
-Elements are of the form \(NAME DOC-STR REGEXP FROM-FN TO-FN MODIFY MODE-FN).
+Elements are of the form
+\(NAME DOC-STR REGEXP FROM-FN TO-FN MODIFY MODE-FN PRESERVE).
NAME is a symbol, which is stored in `buffer-file-format'.
(multibyte enable-multibyte-characters)
(coding-system buffer-file-coding-system))
(with-current-buffer copy-buf
+ (set (make-local-variable
+ 'write-region-post-annotation-function)
+ 'kill-buffer)
(setq selective-display sel-disp)
(set-buffer-multibyte multibyte)
(setq buffer-file-coding-system coding-system))
(setq format (cdr format)))))))
(defun format-write-file (filename format &optional confirm)
- "Write current buffer into file FILENAME using some FORMAT.
-Make buffer visit that file and set the format as the default for future
-saves. If the buffer is already visiting a file, you can specify a directory
-name as FILENAME, to write a file of the same old name in that directory.
-
-If optional third arg CONFIRM is non-nil, ask for confirmation before
-overwriting an existing file. Interactively, confirmation is required
+ "Write current buffer into FILENAME, using a format based on FORMAT.
+Constructs the actual format starting from FORMAT, then appending
+any elements from the value of `buffer-file-format' with a non-nil
+`preserve' flag (see the documentation of `format-alist'), if they
+are not already present in FORMAT. It then updates `buffer-file-format'
+with this format, making it the default for future saves.
+
+If the buffer is already visiting a file, you can specify a
+directory name as FILENAME, to write a file of the same old name
+in that directory.
+
+If optional third arg CONFIRM is non-nil, asks for confirmation before
+overwriting an existing file. Interactively, requires confirmation
unless you supply a prefix argument."
(interactive
;; Same interactive spec as write-file, plus format question.