* files.texi (Save Commands): Mention diff-buffer-with-file.

(Comparing Files): Document diff-buffer-with-file.  Suggested by Magnus
Henoch (Bug#3036).

diff --git a/doc/emacs/ChangeLog b/doc/emacs/ChangeLog
index ca3b2cc51fa7e53990b5485103c1898f4588d642..3fcbde1c68c83ffd73c20779cea4f5a1180a0094 100644 (file)
--- a/doc/emacs/ChangeLog
+++ b/doc/emacs/ChangeLog
@@ -1,3 +1,9 @@
+2009-04-18  Chong Yidong  <cyd@stupidchicken.com>
+
+       * files.texi (Save Commands): Mention diff-buffer-with-file.
+       (Comparing Files): Document diff-buffer-with-file.  Suggested by Magnus
+       Henoch (Bug#3036).
+
 2009-03-15  Glenn Morris  <rgm@gnu.org>
 
        * sending.texi (Mail Format): Replace "Sender" with "Message-Id", since

diff --git a/doc/emacs/files.texi b/doc/emacs/files.texi
index aad2b4adddccf51084fa28c6e7af73a96ede50c6..00e3890693b1325cdf57b85bf8e6b450b5c272b9 100644 (file)
--- a/doc/emacs/files.texi
+++ b/doc/emacs/files.texi
@@ -440,8 +440,9 @@ View the buffer that you are currently being asked about.  When you exit
 View mode, you get back to @code{save-some-buffers}, which asks the
 question again.
 @item d
-Diff the buffer against its corresponding file, so you can see
-what changes you would be saving.
+Diff the buffer against its corresponding file, so you can see what
+changes you would be saving.  This calls the command
+@code{diff-buffer-with-file} (@xpref{Comparing Files}).
 @item C-h
 Display a help message about these options.
 @end table
@@ -1276,6 +1277,11 @@ most recent backup.  If you specify the name of a backup file,
 @code{diff-backup} compares it with the source file that it is a
 backup of.  In all other respects, this behaves like @kbd{M-x diff}.
 
+@findex diff-buffer-with-file
+  The command @kbd{M-x diff-buffer-with-file} compares a specified
+buffer with its corresponding file.  This shows you what changes you
+would make to the file if you save the buffer.
+
 @findex compare-windows
   The command @kbd{M-x compare-windows} compares the text in the
 current window with that in the next window.  (For more information