Merge from emacs-24; up to 2012-04-24T08:35:02Z!lekktu@gmail.com

[bpt/emacs.git] / doc / lispref / files.texi

diff --git a/doc/lispref/files.texi b/doc/lispref/files.texi
index 1756e56..7bb2bad 100644 (file)
--- a/doc/lispref/files.texi
+++ b/doc/lispref/files.texi
@@ -726,7 +726,12 @@ system does not support locking.
 
   File locking is not supported on some systems.  On systems that do not
 support it, the functions @code{lock-buffer}, @code{unlock-buffer} and
-@code{file-locked-p} do nothing and return @code{nil}.
+@code{file-locked-p} do nothing and return @code{nil}.  It is also
+possible to disable locking, by setting the variable @code{create-lockfiles}.
+
+@defopt create-lockfiles
+If this variable is @code{nil}, Emacs does not lock files.
+@end defopt
 
 @defun ask-user-about-lock file other-user
 This function is called when the user tries to modify @var{file}, but it
@@ -3128,10 +3133,10 @@ in the order of appearance in the list.
 This command writes the current buffer contents into the file @var{file}
 in a format based on @var{format}, which is a list of format names.  It
 constructs the actual format starting from @var{format}, then appending
-any elements from the value of @code{buffer-file-format} with a non-nil
-@var{preserve} flag (see above), if they are not already present in
-@var{format}.  It then updates @code{buffer-file-format} with this
-format, making it the default for future saves.  Except for the
+any elements from the value of @code{buffer-file-format} with a
+non-@code{nil} @var{preserve} flag (see above), if they are not already
+present in @var{format}.  It then updates @code{buffer-file-format} with
+this format, making it the default for future saves.  Except for the
 @var{format} argument, this command is similar to @code{write-file}.  In
 particular, @var{confirm} has the same meaning and interactive treatment
 as the corresponding argument to @code{write-file}.  @xref{Definition of