[PATCH 2/3 for mainline, v2] Documentation: update CodingStyle tipsfor Emacs users

From: Randy Dunlap
Date: Mon Jan 26 2009 - 16:04:42 EST

From: Teemu Likonen <tlikonen@xxxxxx>
Subject: [PATCH v2] Documentation: update CodingStyle tips for Emacs users

With the previous Emacs tips example the kernel style was made available
for files in the kernel-tree only. This patch updates the tip to add a
separate cc-mode indent style ("linux-tabs-only"). This makes it easy to
switch between different indent styles and also makes the kernel style
easily available for any filetype mode (c++, awk, ...) that is managed
by the Emacs cc-mode.

Signed-off-by: Teemu Likonen <tlikonen@xxxxxx>
Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Documentation/CodingStyle | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)

--- linux-next-20090126.orig/Documentation/CodingStyle
+++ linux-next-20090126/Documentation/CodingStyle
@@ -483,6 +483,16 @@ values. To do the latter, you can stick
(* (max steps 1)

+(add-hook 'c-mode-common-hook
+ (lambda ()
+ ;; Add kernel style
+ (c-add-style
+ "linux-tabs-only"
+ '("linux" (c-offsets-alist
+ (arglist-cont-nonempty
+ c-lineup-gcc-asm-reg
+ c-lineup-arglist-tabs-only))))))
(add-hook 'c-mode-hook
(lambda ()
(let ((filename (buffer-file-name)))
@@ -490,10 +500,7 @@ values. To do the latter, you can stick
(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))))))
+ (c-set-style "linux-tabs-only")))))

This will make emacs go better with the kernel coding style for C
files below ~/src/linux-trees.
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