From 22eba26dfb521b7da7ef685c7da515b40f754571 Mon Sep 17 00:00:00 2001
From: Johannes Weiner <hannes@saeurebad.de>
Date: Fri, 25 Jul 2008 01:45:51 -0700
Subject: [PATCH] --- yaml --- r: 105813 b: refs/heads/master c:
 a7f371e54fac49ff62bb640d4a7276fca01527e8 h: refs/heads/master i:   105811:
 8522cdad26e14f6112e943b947c20d0c3065105c v: v3

---
 [refs]                          |  2 +-
 trunk/Documentation/CodingStyle | 42 ++++++++++++++++++---------------
 2 files changed, 24 insertions(+), 20 deletions(-)

diff --git a/[refs] b/[refs]
index 85d13ec80bfc..6495de88b19c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 197dcffc8ba0ea943fee86e28e99cd9575799772
+refs/heads/master: a7f371e54fac49ff62bb640d4a7276fca01527e8
diff --git a/trunk/Documentation/CodingStyle b/trunk/Documentation/CodingStyle
index 6caa14615578..1875e502f872 100644
--- a/trunk/Documentation/CodingStyle
+++ b/trunk/Documentation/CodingStyle
@@ -474,25 +474,29 @@ make a good program).
 So, you can either get rid of GNU emacs, or change it to use saner
 values.  To do the latter, you can stick the following in your .emacs file:
 
-(defun linux-c-mode ()
-  "C mode with adjusted defaults for use with the Linux kernel."
-  (interactive)
-  (c-mode)
-  (c-set-style "K&R")
-  (setq tab-width 8)
-  (setq indent-tabs-mode t)
-  (setq c-basic-offset 8))
-
-This will define the M-x linux-c-mode command.  When hacking on a
-module, if you put the string -*- linux-c -*- somewhere on the first
-two lines, this mode will be automatically invoked. Also, you may want
-to add
-
-(setq auto-mode-alist (cons '("/usr/src/linux.*/.*\\.[ch]$" . linux-c-mode)
-			auto-mode-alist))
-
-to your .emacs file if you want to have linux-c-mode switched on
-automagically when you edit source files under /usr/src/linux.
+(defun c-lineup-arglist-tabs-only (ignored)
+  "Line up argument lists by tabs, not spaces"
+  (let* ((anchor (c-langelem-pos c-syntactic-element))
+	 (column (c-langelem-2nd-pos c-syntactic-element))
+	 (offset (- (1+ column) anchor))
+	 (steps (floor offset c-basic-offset)))
+    (* (max steps 1)
+       c-basic-offset)))
+
+(add-hook 'c-mode-hook
+          (lambda ()
+            (let ((filename (buffer-file-name)))
+              ;; Enable kernel mode for the appropriate files
+              (when (and filename
+                         (string-match "~/src/linux-trees" filename))
+                (setq indent-tabs-mode t)
+                (c-set-style "linux")
+                (c-set-offset 'arglist-cont-nonempty
+                              '(c-lineup-gcc-asm-reg
+                                c-lineup-arglist-tabs-only))))))
+
+This will make emacs go better with the kernel coding style for C
+files below ~/src/linux-trees.
 
 But even if you fail in getting emacs to do sane formatting, not
 everything is lost: use "indent".