Doc updates for read-only-mode.

* buffers.texi (Misc Buffer): Replace toggle-read-only with
read-only-mode.

* files.texi (Visiting): Likewise.

* backups.texi (Auto-Saving): Refer to Minor Mode Conventions for
calling conventions.

* buffers.texi (Read Only Buffers): Document read-only-mode.

* keymaps.texi (Alias Menu Items): Replace toggle-read-only with
read-only-mode.

doc/emacs/ChangeLog

@@ -1,3 +1,10 @@
+2012-09-23  Chong Yidong  <cyd@gnu.org>
+
+	* buffers.texi (Misc Buffer): Replace toggle-read-only with
+	read-only-mode.
+
+	* files.texi (Visiting): Likewise.
+
 2012-09-22  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* trouble.texi (Crashing): Document ulimit -c.

doc/emacs/buffers.texi

@@ -212,7 +212,7 @@ unless they visit files: such buffers are used internally by Emacs.
 
 @table @kbd
 @item C-x C-q
-Toggle read-only status of buffer (@code{toggle-read-only}).
+Toggle read-only status of buffer (@code{read-only-mode}).
 @item M-x rename-buffer @key{RET} @var{name} @key{RET}
 Change the name of the current buffer.
 @item M-x rename-uniquely
@@ -231,9 +231,9 @@ buffers are usually made by subsystems such as Dired and Rmail that
 have special commands to operate on the text; also by visiting a file
 whose access control says you cannot write it.
 
-@findex toggle-read-only
+@findex read-only-mode
 @vindex view-read-only
- The command @kbd{C-x C-q} (@code{toggle-read-only}) makes a read-only
+ The command @kbd{C-x C-q} (@code{read-only-mode}) makes a read-only
 buffer writable, and makes a writable buffer read-only.  This works by
 setting the variable @code{buffer-read-only}, which has a local value
 in each buffer and makes the buffer read-only if its value is

doc/emacs/files.texi

@@ -246,7 +246,7 @@ Archives}, for more about these features.
 or that is marked read-only, Emacs makes the buffer read-only too, so
 that you won't go ahead and make changes that you'll have trouble
 saving afterward.  You can make the buffer writable with @kbd{C-x C-q}
-(@code{toggle-read-only}).  @xref{Misc Buffer}.
+(@code{read-only-mode}).  @xref{Misc Buffer}.
 
 @kindex C-x C-r
 @findex find-file-read-only

doc/lispref/ChangeLog

@@ -1,3 +1,13 @@
+2012-09-23  Chong Yidong  <cyd@gnu.org>
+
+	* buffers.texi (Read Only Buffers): Document read-only-mode.
+
+	* keymaps.texi (Alias Menu Items): Replace toggle-read-only with
+	read-only-mode.
+
+	* backups.texi (Auto-Saving): Refer to Minor Mode Conventions for
+	calling conventions.
+
 2012-09-22  Chong Yidong  <cyd@gnu.org>
 
 	* searching.texi (Replacing Match): Minor clarification.

doc/lispref/backups.texi

@@ -441,12 +441,14 @@ buffer-auto-save-file-name
 @end defvar
 
 @deffn Command auto-save-mode arg
-When used interactively without an argument, this command is a toggle
-switch: it turns on auto-saving of the current buffer if it is off,
-and vice versa.  When called from Lisp with no argument, it turns
-auto-saving on.  With an argument @var{arg}, it turns auto-saving on
-if the value of @var{arg} is @code{t}, a nonempty list, or a positive
-integer; otherwise, it turns auto-saving off.
+This is the mode command for Auto Save mode, a buffer-local minor
+mode.  When Auto Save mode is enabled, auto-saving is enabled in the
+buffer.  The calling convention is the same as for other minor mode
+commands (@pxref{Minor Mode Conventions}).
+
+Unlike most minor modes, there is no @code{auto-save-mode} variable.
+Auto Save mode is enabled if @code{buffer-auto-save-file-name} is
+non-@code{nil} and @code{buffer-saved-size} (see below) is non-zero.
 @end deffn
 
 @defun auto-save-file-name-p filename

doc/lispref/buffers.texi

@@ -740,31 +740,25 @@ properties have no effect.  If @code{inhibit-read-only} is a list, then
 of the list (comparison is done with @code{eq}).
 @end defvar
 
-@deffn Command toggle-read-only &optional arg message
-This command toggles whether the current buffer is read-only, by
-setting the variable @code{buffer-read-only}.  If @var{arg} is
-non-@code{nil}, it should be a raw prefix argument; the command then
-makes the buffer read-only if the numeric value of that prefix
-argument is positive, and makes the buffer writable otherwise.
-@xref{Prefix Command Arguments}.
+@deffn Command read-only-mode &optional arg
+This is the mode command for Read Only minor mode, a buffer-local
+minor mode.  When the mode is enabled, @code{buffer-read-only} is
+non-@code{nil} in the buffer; when disabled, @code{buffer-read-only}
+is @code{nil} in the buffer.  The calling convention is the same as
+for other minor mode commands (@pxref{Minor Mode Conventions}).
 
-If called interactively, or if called from Lisp with @var{message} is
-non-@code{nil}, the command prints a message reporting the buffer's
-new read-only status.
+This minor mode mainly serves as a wrapper for
+@code{buffer-read-only}; unlike most minor modes, there is no separate
+@code{read-only-mode} variable.  Even when Read Only mode is disabled,
+characters with non-@code{nil} @code{read-only} text properties remain
+read-only.  To temporarily ignore all read-only states, bind
+@code{inhibit-read-only}, as described above.
 
-When making the buffer read-only, this command also enables View mode
+When enabling Read Only mode, this mode command also enables View mode
 if the option @code{view-read-only} is non-@code{nil}.  @xref{Misc
 Buffer,,Miscellaneous Buffer Operations, emacs, The GNU Emacs Manual}.
-When making the buffer writable, it disables View mode if View mode
-was enabled.
-
-Lisp programs should only call @code{toggle-read-only} if they really
-intend to do the same thing as the user command, including possibly
-enabling or disabling View mode.  Note also that this command works by
-setting @code{buffer-read-only}, so even if you make the buffer
-writable, characters with non-@code{nil} @code{read-only} text
-properties will remain read-only.  To temporarily ignore all read-only
-states, bind @code{inhibit-read-only}, as described above.
+When disabling Read Only mode, it disables View mode if View mode was
+enabled.
 @end deffn
 
 @defun barf-if-buffer-read-only

doc/lispref/keymaps.texi

@@ -2288,12 +2288,12 @@ command but with different enable conditions.  The best way to do this
 in Emacs now is with extended menu items; before that feature existed,
 it could be done by defining alias commands and using them in menu
 items.  Here's an example that makes two aliases for
-@code{toggle-read-only} and gives them different enable conditions:
+@code{read-only-mode} and gives them different enable conditions:
 
 @example
-(defalias 'make-read-only 'toggle-read-only)
+(defalias 'make-read-only 'read-only-mode)
 (put 'make-read-only 'menu-enable '(not buffer-read-only))
-(defalias 'make-writable 'toggle-read-only)
+(defalias 'make-writable 'read-only-mode)
 (put 'make-writable 'menu-enable 'buffer-read-only)
 @end example
 
@@ -2310,7 +2310,7 @@ itself).  To request this, give the alias symbol a non-@code{nil}
 
 @noindent
 causes menu items for @code{make-read-only} and @code{make-writable} to
-show the keyboard bindings for @code{toggle-read-only}.
+show the keyboard bindings for @code{read-only-mode}.
 
 @node Toolkit Differences
 @subsubsection Toolkit Differences

etc/NEWS

@@ -94,7 +94,7 @@ respectively, without exiting from the prompt.
 next and previous path separator, respectively.
 
 ** Mode line changes
-
+---
 *** New option `mode-line-default-help-echo' specifies the help text
 (shown in a tooltip or in the echo area) for any part of the mode line
 that does not have its own specialized help text.
@@ -143,6 +143,7 @@ or expression to evaluate.
 ** In the Package Menu, newly-available packages are listed as "new",
 and sorted above the other "available" packages by default.
 
++++
 ** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
 This minor mode replaces `toggle-read-only', which is now obsolete.