Module Name: src
Committed By: christos
Date: Mon Apr 27 20:03:08 UTC 2020
Modified Files:
src/usr.bin/make: make.1
Log Message:
document the SYSV ${VAR:old=new} corner cases.
To generate a diff of this commit:
cvs rdiff -u -r1.279 -r1.280 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.1:1.279 src/usr.bin/make/make.1:1.280
--- src/usr.bin/make/make.1:1.279 Tue Feb 4 11:28:29 2020
+++ src/usr.bin/make/make.1 Mon Apr 27 16:03:08 2020
@@ -1,4 +1,4 @@
-.\" $NetBSD: make.1,v 1.279 2020/02/04 16:28:29 wiz Exp $
+.\" $NetBSD: make.1,v 1.280 2020/04/27 20:03:08 christos 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 February 16, 2019
+.Dd April 27, 2020
.Dt MAKE 1
.Os
.Sh NAME
@@ -1428,6 +1428,29 @@ is the substring of
.Ar old_string
to be replaced in
.Ar new_string .
+If only
+.Ar old_string
+contains the pattern matching character
+.Ar % ,
+and
+.Ar old_string
+matches, then the result is the
+.Ar new_string .
+If only the
+.Ar new_string
+contains the pattern matching character
+.Ar % ,
+then it is not treated specially and it is printed as a literal
+.Ar %
+on match.
+If there is more than one pattern matching character
+.Ar ( % )
+in either the
+.Ar new_string
+or
+.Ar old_string ,
+only the first instance is treated specially (as the pattern character);
+all subsequent instances are treated as regular characters
.Pp
Variable expansion occurs in the normal fashion inside both
.Ar old_string
