MFC r284527,r284528,r284608,r285219,r291166,r291167:

r284527 (by imp):

Update style.9 to reflect consensus on developer's mailing list
allowing redundant braces.

Differential Revision: https://reviews.freebsd.org/D2842

r284528 (by imp):

Bump date.

Submitted by: Xin Li

r284608 (by imp):

Back out contested change until dispute is resolved. This proved to be
more contentious than I expected.

r285219 (by imp):

The results of the vote are in. This reflects that vote. Single
line statements inside of braces is recognized as an acceptable
style.
	http://reviews.freebsd.org/V3
As always, this isn't license for wholesale change, etc.

r291166:

Recommend cc -Wall instead of gcc -Wall

r291167:

Bump .Dd

1 files changed, 7 insertions, 6 deletions

diff --git a/share/man/man9/style.9 b/share/man/man9/style.9
index ed65ac6..1d0c7b3 100644
--- a/share/man/man9/style.9
+++ b/share/man/man9/style.9
@@ -26,7 +26,7 @@
 .\"	From: @(#)style	1.14 (Berkeley) 4/28/95
 .\" $FreeBSD$
 .\"
-.Dd January 7, 2010
+.Dd November 22, 2015
 .Dt STYLE 9
 .Os
 .Sh NAME
@@ -503,13 +503,14 @@ Code which is unreachable for non-obvious reasons may be marked /*
 .Pp
 Space after keywords
 .Pq Ic if , while , for , return , switch .
-No braces
+Two styles of braces
 .Ql ( \&{
 and
 .Ql \&} )
-are
-used for control statements with zero or only a single statement unless that
-statement is more than a single line in which case they are permitted.
+are allowed for single line statements.
+Either they are used for all single statements, or
+they are used only where needed for clarity.
+Usage within a function should be consistent.
 Forever loops are done with
 .Ic for Ns 's ,
 not
@@ -833,7 +834,7 @@ Whenever possible, code should be run through a code checker
 (e.g.,
 .Xr lint 1
 or
-.Nm gcc Fl Wall )
+.Nm cc Fl Wall )
 and produce minimal warnings.
 .Sh SEE ALSO
 .Xr indent 1 ,