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authorJosh Triplett <josh@joshtriplett.org>2011-08-03 12:19:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-06 11:59:07 -0700
commit6f76b6fcaa6025bc9b2c00e055c7ccd39730568d (patch)
tree1b34503081591f2a5748c0902e6e75f917de070b /Documentation/CodingStyle
parent1117f72ea0217ba0cc19f05adbbd8b9a397f5ab7 (diff)
downloadlinux-6f76b6fcaa6025bc9b2c00e055c7ccd39730568d.tar.gz
CodingStyle: Document the exception of not splitting user-visible strings, for grepping
Patch reviewers now recommend not splitting long user-visible strings, such as printk messages, even if they exceed 80 columns. This avoids breaking grep. However, that recommendation did not actually appear anywhere in Documentation/CodingStyle. See, for example, the thread at http://news.gmane.org/find-root.php?message_id=%3c1312215262.11635.15.camel%40Joe%2dLaptop%3e Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/CodingStyle')
-rw-r--r--Documentation/CodingStyle23
1 files changed, 7 insertions, 16 deletions
diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle
index fa6e25b94a5..c940239d967 100644
--- a/Documentation/CodingStyle
+++ b/Documentation/CodingStyle
@@ -80,22 +80,13 @@ available tools.
The limit on the length of lines is 80 columns and this is a strongly
preferred limit.
-Statements longer than 80 columns will be broken into sensible chunks.
-Descendants are always substantially shorter than the parent and are placed
-substantially to the right. The same applies to function headers with a long
-argument list. Long strings are as well broken into shorter strings. The
-only exception to this is where exceeding 80 columns significantly increases
-readability and does not hide information.
-
-void fun(int a, int b, int c)
-{
- if (condition)
- printk(KERN_WARNING "Warning this is a long printk with "
- "3 parameters a: %u b: %u "
- "c: %u \n", a, b, c);
- else
- next_statement;
-}
+Statements longer than 80 columns will be broken into sensible chunks, unless
+exceeding 80 columns significantly increases readability and does not hide
+information. Descendants are always substantially shorter than the parent and
+are placed substantially to the right. The same applies to function headers
+with a long argument list. However, never break user-visible strings such as
+printk messages, because that breaks the ability to grep for them.
+
Chapter 3: Placing Braces and Spaces