[Emacs-diffs] /srv/bzr/emacs/emacs-23 r100251: * doc/lispref/backups.texi (Making Backups):

[Stefan Monnier]

------------------------------------------------------------
revno: 100251
committer: Stefan Monnier <address@hidden>
branch nick: emacs-23
timestamp: Wed 2010-12-01 17:42:36 -0500
message:
  * doc/lispref/backups.texi (Making Backups):
  * doc/lispref/modes.texi (Example Major Modes): Use recommended coding style.
  (Major Mode Basics, Derived Modes): Encourge more strongly use of
  define-derived-mode.  Mention completion-at-point-functions.
modified:
  doc/lispref/ChangeLog
  doc/lispref/backups.texi
  doc/lispref/modes.texi
  doc/lispref/text.texi

=== modified file 'doc/lispref/ChangeLog'
--- a/doc/lispref/ChangeLog     2010-11-21 18:07:47 +0000
+++ b/doc/lispref/ChangeLog     2010-12-01 22:42:36 +0000
@@ -1,3 +1,10 @@
+2010-12-01  Stefan Monnier  <address@hidden>
+
+       * backups.texi (Making Backups):
+       * modes.texi (Example Major Modes): Use recommended coding style.
+       (Major Mode Basics, Derived Modes): Encourge more strongly use of
+       define-derived-mode.  Mention completion-at-point-functions.
+
 2010-11-21  Chong Yidong  <address@hidden>
 
        * nonascii.texi (Converting Representations): Document

=== modified file 'doc/lispref/backups.texi'
--- a/doc/lispref/backups.texi  2010-01-13 08:35:10 +0000
+++ b/doc/lispref/backups.texi  2010-12-01 22:42:36 +0000
@@ -88,10 +88,8 @@
 @smallexample
 @group
 (add-hook 'rmail-mode-hook
-          (function (lambda ()
-                      (make-local-variable
-                       'make-backup-files)
-                      (setq make-backup-files nil))))
+          (lambda ()
+            (set (make-local-variable 'make-backup-files) nil)))
 @end group
 @end smallexample
 @end defopt

=== modified file 'doc/lispref/modes.texi'
--- a/doc/lispref/modes.texi    2010-08-22 19:30:26 +0000
+++ b/doc/lispref/modes.texi    2010-12-01 22:42:36 +0000
@@ -20,10 +20,10 @@
 @ref{Keymaps}, and @ref{Syntax Tables}.
 
 @menu
-* Hooks::              How to use hooks; how to write code that provides hooks.
-* Major Modes::        Defining major modes.
-* Minor Modes::        Defining minor modes.
-* Mode Line Format::   Customizing the text that appears in the mode line.
+* Hooks::                       How to use hooks; how to write code that 
provides hooks.
+* Major Modes::                 Defining major modes.
+* Minor Modes::                 Defining minor modes.
+* Mode Line Format::            Customizing the text that appears in the mode 
line.
 * Imenu::              How a mode can provide a menu
                          of definitions in the buffer.
 * Font Lock Mode::     How modes can highlight text according to syntax.
@@ -78,8 +78,8 @@
 its value is just a single function, not a list of functions.
 
 @menu
-* Running Hooks::      How to run a hook.
-* Setting Hooks::      How to put functions on a hook, or remove them.
+* Running Hooks::               How to run a hook.
+* Setting Hooks::               How to put functions on a hook, or remove them.
 @end menu
 
 @node Running Hooks
@@ -199,16 +199,16 @@
 to another major mode in the same buffer.
 
 @menu
-* Major Mode Basics::
-* Major Mode Conventions::  Coding conventions for keymaps, etc.
-* Auto Major Mode::         How Emacs chooses the major mode automatically.
-* Mode Help::               Finding out how to use a mode.
-* Derived Modes::           Defining a new major mode based on another major
+* Major Mode Basics::           
+* Major Mode Conventions::      Coding conventions for keymaps, etc.
+* Auto Major Mode::             How Emacs chooses the major mode automatically.
+* Mode Help::                   Finding out how to use a mode.
+* Derived Modes::               Defining a new major mode based on another 
major
                               mode.
-* Generic Modes::           Defining a simple major mode that supports
+* Generic Modes::               Defining a simple major mode that supports
                               comment syntax and Font Lock mode.
-* Mode Hooks::              Hooks run at the end of major mode functions.
-* Example Major Modes::     Text mode and Lisp modes.
+* Mode Hooks::                  Hooks run at the end of major mode functions.
+* Example Major Modes::         Text mode and Lisp modes.
 @end menu
 
 @node Major Mode Basics
@@ -238,9 +238,8 @@
 is distinct from that of Text mode, but uses that of Text mode.
 
   Even if the new mode is not an obvious derivative of any other mode,
-it is convenient to use @code{define-derived-mode} with a @code{nil}
-parent argument, since it automatically enforces the most important
-coding conventions for you.
+we recommend to use @code{define-derived-mode}, since it automatically
+enforces the most important coding conventions for you.
 
   For a very simple programming language major mode that handles
 comments and fontification, you can use @code{define-generic-mode}.
@@ -429,6 +428,10 @@
 this mode.
 
 @item
+The mode can specify how to complete various keywords by adding
+to the special hook @code{completion-at-point-functions}.
+
address@hidden
 Use @code{defvar} or @code{defcustom} to set mode-related variables, so
 that they are not reinitialized if they already have a value.  (Such
 reinitialization could discard customizations made by the user.)
@@ -492,7 +495,7 @@
 mode as special if the parent mode is special.  The special mode
 @code{special-mode} provides a convenient parent for other special
 modes to inherit from; it sets @code{buffer-read-only} to @code{t},
-and does nothing else.
+and does little else.
 
 @item
 If you want to make the new mode the default for files with certain
@@ -737,8 +740,10 @@
 @subsection Defining Derived Modes
 @cindex derived mode
 
-  It's often useful to define a new major mode in terms of an existing
-one.  An easy way to do this is to use @code{define-derived-mode}.
+  The recommended way to define a new major mode is to derive it
+from an existing one using @code{define-derived-mode}.  If there is no
+closely related mode, you can inherit from @code{text-mode},
address@hidden, or in the worst case @code{fundamental-mode}.
 
 @defmac define-derived-mode variant parent name docstring address@hidden 
address@hidden
 This macro defines @var{variant} as a major mode command, using
@@ -979,8 +984,7 @@
 Turning on Text mode runs the normal hook `text-mode-hook'."
 @end group
 @group
-  (make-local-variable 'text-mode-variant)
-  (setq text-mode-variant t)
+  (set (make-local-variable 'text-mode-variant) t)
   ;; @r{These two lines are a feature added recently.}
   (set (make-local-variable 'require-final-newline)
        mode-require-final-newline)
@@ -998,9 +1002,8 @@
 @smallexample
 @group
 ;; @r{This isn't needed nowadays, since @code{define-derived-mode} does it.}
-(defvar text-mode-abbrev-table nil
+(define-abbrev-table 'text-mode-abbrev-table ()
   "Abbrev table used while in text mode.")
-(define-abbrev-table 'text-mode-abbrev-table ())
 @end group
 
 @group
@@ -1022,12 +1025,10 @@
   ;; @r{These four lines are absent from the current version}
   ;; @r{not because this is done some other way, but rather}
   ;; @r{because nowadays Text mode uses the normal definition of paragraphs.}
-  (make-local-variable 'paragraph-start)
-  (setq paragraph-start (concat "[ \t]*$\\|" page-delimiter))
-  (make-local-variable 'paragraph-separate)
-  (setq paragraph-separate paragraph-start)
-  (make-local-variable 'indent-line-function)
-  (setq indent-line-function 'indent-relative-maybe)
+  (set (make-local-variable 'paragraph-start)
+       (concat "[ \t]*$\\|" page-delimiter))
+  (set (make-local-variable 'paragraph-separate) paragraph-start)
+  (set (make-local-variable 'indent-line-function) 'indent-relative-maybe)
 @end group
 @group
   (setq mode-name "Text")
@@ -1115,15 +1116,12 @@
 
 @smallexample
 @group
-  (make-local-variable 'paragraph-start)
-  (setq paragraph-start (concat page-delimiter "\\|$" ))
-  (make-local-variable 'paragraph-separate)
-  (setq paragraph-separate paragraph-start)
+  (set (make-local-variable 'paragraph-start) (concat page-delimiter "\\|$" ))
+  (set (make-local-variable 'paragraph-separate) paragraph-start)
   @dots{}
 @end group
 @group
-  (make-local-variable 'comment-indent-function)
-  (setq comment-indent-function 'lisp-comment-indent))
+  (set (make-local-variable 'comment-indent-function) 'lisp-comment-indent))
   @dots{}
 @end group
 @end smallexample
@@ -1135,16 +1133,13 @@
 
 @smallexample
 @group
-(defvar shared-lisp-mode-map ()
+(defvar shared-lisp-mode-map
+  (let ((map (make-sparse-keymap)))
+    (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp)
+    (define-key shared-lisp-mode-map "\177"
+                'backward-delete-char-untabify)
+    map)
   "Keymap for commands shared by all sorts of Lisp modes.")
-
-;; @r{Putting this @code{if} after the @code{defvar} is an older style.}
-(if shared-lisp-mode-map
-    ()
-   (setq shared-lisp-mode-map (make-sparse-keymap))
-   (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp)
-   (define-key shared-lisp-mode-map "\177"
-               'backward-delete-char-untabify))
 @end group
 @end smallexample
 
@@ -1153,15 +1148,13 @@
 
 @smallexample
 @group
-(defvar lisp-mode-map ()
+(defvar lisp-mode-map
+  (let ((map (make-sparse-keymap)))
+    (set-keymap-parent map shared-lisp-mode-map)
+    (define-key map "\e\C-x" 'lisp-eval-defun)
+    (define-key map "\C-c\C-z" 'run-lisp)
+    map)
   "Keymap for ordinary Lisp mode...")
-
-(if lisp-mode-map
-    ()
-  (setq lisp-mode-map (make-sparse-keymap))
-  (set-keymap-parent lisp-mode-map shared-lisp-mode-map)
-  (define-key lisp-mode-map "\e\C-x" 'lisp-eval-defun)
-  (define-key lisp-mode-map "\C-c\C-z" 'run-lisp))
 @end group
 @end smallexample
 
@@ -1192,11 +1185,9 @@
                                          ;   @r{finds out what to describe.}
   (setq mode-name "Lisp")                ; @r{This goes into the mode line.}
   (lisp-mode-variables t)                ; @r{This defines various variables.}
-  (make-local-variable 'comment-start-skip)
-  (setq comment-start-skip
-        "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\)\\(;+\\|#|\\) *")
-  (make-local-variable 'font-lock-keywords-case-fold-search)
-  (setq font-lock-keywords-case-fold-search t)
+  (set (make-local-variable 'comment-start-skip)
+       "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\)\\(;+\\|#|\\) *")
+  (set (make-local-variable 'font-lock-keywords-case-fold-search) t)
 @end group
 @group
   (setq imenu-case-fold-search t)
@@ -1580,14 +1571,14 @@
 minor modes.
 
 @menu
-* Base: Mode Line Basics. Basic ideas of mode line control.
-* Data: Mode Line Data.   The data structure that controls the mode line.
-* Top: Mode Line Top.     The top level variable, mode-line-format.
-* Mode Line Variables::   Variables used in that data structure.
-* %-Constructs::          Putting information into a mode line.
-* Properties in Mode::    Using text properties in the mode line.
-* Header Lines::          Like a mode line, but at the top.
-* Emulating Mode Line::   Formatting text as the mode line would.
+* Base: Mode Line Basics.       Basic ideas of mode line control.
+* Data: Mode Line Data.         The data structure that controls the mode line.
+* Top: Mode Line Top.           The top level variable, mode-line-format.
+* Mode Line Variables::         Variables used in that data structure.
+* %-Constructs::                Putting information into a mode line.
+* Properties in Mode::          Using text properties in the mode line.
+* Header Lines::                Like a mode line, but at the top.
+* Emulating Mode Line::         Formatting text as the mode line would.
 @end menu
 
 @node Mode Line Basics
@@ -2361,7 +2352,7 @@
 * Other Font Lock Variables::   Additional customization facilities.
 * Levels of Font Lock::         Each mode can define alternative levels
                                   so that the user can select more or less.
-* Precalculated Fontification:: How Lisp programs that produce the buffer
+* Precalculated Fontification::  How Lisp programs that produce the buffer
                                   contents can also specify how to fontify it.
 * Faces for Font Lock::         Special faces specifically for Font Lock.
 * Syntactic Font Lock::         Fontification based on syntax tables.
@@ -3276,5 +3267,7 @@
 @end defvar
 
 @ignore
-   arch-tag: 4c7bff41-36e6-4da6-9e7f-9b9289e27c8e
+   Local Variables:
+   fill-column: 72
+   End:
 @end ignore

=== modified file 'doc/lispref/text.texi'
--- a/doc/lispref/text.texi     2010-11-21 18:07:47 +0000
+++ b/doc/lispref/text.texi     2010-12-01 22:42:36 +0000
@@ -2205,7 +2205,7 @@
 @defvar indent-line-function
 This variable's value is the function to be used by @key{TAB} (and
 various commands) to indent the current line.  The command
address@hidden does no more than call this function.
address@hidden does little more than call this function.
 
 In Lisp mode, the value is the symbol @code{lisp-indent-line}; in C
 mode, @code{c-indent-line}; in Fortran mode, @code{fortran-indent-line}.