===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/make/make.1,v
retrieving revision 1.100
retrieving revision 1.101
diff -u -r1.100 -r1.101
--- src/usr.bin/make/make.1	2012/10/12 21:44:19	1.100
+++ src/usr.bin/make/make.1	2013/02/04 14:44:58	1.101
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: make.1,v 1.100 2012/10/12 21:44:19 espie Exp $
+.\"	$OpenBSD: make.1,v 1.101 2013/02/04 14:44:58 espie Exp $
 .\"	$NetBSD: make.1,v 1.18 1997/03/10 21:19:53 christos Exp $
 .\"
 .\" Copyright (c) 1990, 1993
@@ -30,7 +30,7 @@
 .\"
 .\"	from: @(#)make.1	8.4 (Berkeley) 3/19/94
 .\"
-.Dd $Mdocdate: October 12 2012 $
+.Dd $Mdocdate: February 4 2013 $
 .Dt MAKE 1
 .Os
 .Sh NAME
@@ -526,6 +526,20 @@
 is removed; if the value is being appended, a single space is inserted
 between the previous contents of the variable and the appended value.
 .Pp
+Several extended assignment operators may be combined together.
+For instance,
+.Bd -literal -offset indent
+A ?!= cmd
+.Ed
+.Pp
+will only run
+.Qq cmd
+and put its output into
+.Va A
+if
+.Va A
+is not yet defined.
+.Pp
 Variables are expanded by surrounding the variable name with either
 curly braces
 .Pq Ql {}
@@ -1542,7 +1556,7 @@
 .Pp
 If the same target is specified several times in complete target rules,
 .Nm
-ignores all commands after the first non empty set of commands,
+silently ignores all commands after the first non empty set of commands,
 e.g., in
 .Bd -literal -offset indent
 a:
@@ -1600,13 +1614,6 @@
 .Ed
 .Pp
 the test will never match, even though the value is correct.
-.Pp
-The conditional handler is incredibly lame.
-Junk such as
-.Pp
-.Dl \&.if defined anything goes (A)
-.Pp
-will be accepted silently.
 .Pp
 In a .for loop, only the variable value is used; assignments will be
 evaluated later, e.g., in