Module Name: src
Committed By: dsl
Date: Thu Oct 1 21:40:31 UTC 2009
Modified Files:
src/usr.bin/make: make.1
Log Message:
Add example of how to use the ?: modifier properly.
To generate a diff of this commit:
cvs rdiff -u -r1.161 -r1.162 src/usr.bin/make/make.1
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/make/make.1
diff -u src/usr.bin/make/make.1:1.161 src/usr.bin/make/make.1:1.162
--- src/usr.bin/make/make.1:1.161 Tue Sep 8 17:29:20 2009
+++ src/usr.bin/make/make.1 Thu Oct 1 21:40:31 2009
@@ -1,4 +1,4 @@
-.\" $NetBSD: make.1,v 1.161 2009/09/08 17:29:20 sjg Exp $
+.\" $NetBSD: make.1,v 1.162 2009/10/01 21:40:31 dsl Exp $
.\"
.\" Copyright (c) 1990, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -29,7 +29,7 @@
.\"
.\" from: @(#)make.1 8.4 (Berkeley) 3/19/94
.\"
-.Dd September 7, 2009
+.Dd October 1, 2009
.Dt MAKE 1
.Os
.Sh NAME
@@ -1061,8 +1061,11 @@
Since the variable name is used as the expression, \&:\&? must be the
first modifier after the variable name itself - which will, of course,
usually contain variable expansions.
-If the expression is a single token, it will likely be treated as a check
-for the name being defined.
+A common error is trying to use expressions like
+.Dl ${NUMBERS:M42:?match:no}
+which actually tests defined(NUMBERS),
+to determine is any words match "42" you need to use something like:
+.Dl ${${NUMBERS:M42} != "":?match:no} .
.It Ar :old_string=new_string
This is the
.At V
