===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/make/make.1,v
retrieving revision 1.100
retrieving revision 1.101
diff -c -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 ****
! .\"	$OpenBSD: make.1,v 1.100 2012/10/12 21:44:19 espie Exp $
  .\"	$NetBSD: make.1,v 1.18 1997/03/10 21:19:53 christos Exp $
  .\"
  .\" Copyright (c) 1990, 1993
--- 1,4 ----
! .\"	$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
***************
*** 30,36 ****
  .\"
  .\"	from: @(#)make.1	8.4 (Berkeley) 3/19/94
  .\"
! .Dd $Mdocdate: October 12 2012 $
  .Dt MAKE 1
  .Os
  .Sh NAME
--- 30,36 ----
  .\"
  .\"	from: @(#)make.1	8.4 (Berkeley) 3/19/94
  .\"
! .Dd $Mdocdate: February 4 2013 $
  .Dt MAKE 1
  .Os
  .Sh NAME
***************
*** 526,531 ****
--- 526,545 ----
  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 {}
***************
*** 1542,1548 ****
  .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,
  e.g., in
  .Bd -literal -offset indent
  a:
--- 1556,1562 ----
  .Pp
  If the same target is specified several times in complete target rules,
  .Nm
! silently ignores all commands after the first non empty set of commands,
  e.g., in
  .Bd -literal -offset indent
  a:
***************
*** 1600,1612 ****
  .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
--- 1614,1619 ----