Module Name:    src
Committed By:   rillig
Date:           Mon Feb 22 23:39:24 UTC 2021

Modified Files:
        src/usr.bin/make: var.c

Log Message:
make: make ModifyWord_Subst a little easier to understand

Addition is easier than subtraction, and the expression 'word + wordLen'
obviously means 'the end of the word', which was not as easy to spot
before.

No functional change.


To generate a diff of this commit:
cvs rdiff -u -r1.838 -r1.839 src/usr.bin/make/var.c

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/var.c
diff -u src/usr.bin/make/var.c:1.838 src/usr.bin/make/var.c:1.839
--- src/usr.bin/make/var.c:1.838	Mon Feb 22 23:21:33 2021
+++ src/usr.bin/make/var.c	Mon Feb 22 23:39:24 2021
@@ -1,4 +1,4 @@
-/*	$NetBSD: var.c,v 1.838 2021/02/22 23:21:33 rillig Exp $	*/
+/*	$NetBSD: var.c,v 1.839 2021/02/22 23:39:24 rillig Exp $	*/
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -140,7 +140,7 @@
 #include "metachar.h"
 
 /*	"@(#)var.c	8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: var.c,v 1.838 2021/02/22 23:21:33 rillig Exp $");
+MAKE_RCSID("$NetBSD: var.c,v 1.839 2021/02/22 23:39:24 rillig Exp $");
 
 typedef enum VarFlags {
 	VFL_NONE	= 0,
@@ -1541,13 +1541,13 @@ ModifyWord_Subst(const char *word, SepBu
 		    memcmp(word, args->lhs, args->lhsLen) != 0)
 			goto nosub;
 
-		if ((args->pflags.anchorEnd) && wordLen != args->lhsLen)
+		if (args->pflags.anchorEnd && wordLen != args->lhsLen)
 			goto nosub;
 
 		/* :S,^prefix,replacement, or :S,^whole$,replacement, */
 		SepBuf_AddBytes(buf, args->rhs, args->rhsLen);
-		SepBuf_AddBytes(buf, word + args->lhsLen,
-		    wordLen - args->lhsLen);
+		SepBuf_AddBytesBetween(buf,
+		    word + args->lhsLen, word + wordLen);
 		args->matched = TRUE;
 		return;
 	}

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