Index: head/tools/regression/bin/sh/builtins/read1.0
===================================================================
--- head/tools/regression/bin/sh/builtins/read1.0	(revision 190299)
+++ head/tools/regression/bin/sh/builtins/read1.0	(revision 190300)
@@ -1,25 +1,26 @@
 # $FreeBSD$
 set -e
 
 echo "1 2 3"		| { read a; echo "x${a}x"; }
 echo "1 2 3"		| { read a b; echo "x${a}x${b}x"; }
 echo "1 2 3"		| { read a b c; echo "x${a}x${b}x${c}x"; }
 echo "1 2 3"		| { read a b c d; echo "x${a}x${b}x${c}x${d}x"; }
 
 echo "	1  2 3 "	| { read a b c; echo "x${a}x${b}x${c}x"; }
+echo "	1  2 3 "	| { unset IFS; read a b c; echo "x${a}x${b}x${c}x"; }
 echo "	1  2 3 "	| { IFS=$(printf ' \t\n') read a b c; echo "x${a}x${b}x${c}x"; }
 echo "	1  2 3 "	| { IFS= read a b; echo "x${a}x${b}x"; }
 
 echo " 1,2 3 "		| { IFS=' ,' read a b c; echo "x${a}x${b}x${c}x"; }
 echo ", 2 ,3"		| { IFS=' ,' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 ,,3"		| { IFS=' ,' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 , , 3"		| { IFS=' ,' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 ,2 3,"		| { IFS=' ,' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 ,2 3,,"	| { IFS=' ,' read a b c; echo "x${a}x${b}x${c}x"; }
 
 echo " 1,2 3 "		| { IFS=', ' read a b c; echo "x${a}x${b}x${c}x"; }
 echo ", 2 ,3"		| { IFS=', ' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 ,,3"		| { IFS=', ' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 , , 3"		| { IFS=', ' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 ,2 3,"		| { IFS=', ' read a b c; echo "x${a}x${b}x${c}x"; }
 echo " 1 ,2 3,,"	| { IFS=', ' read a b c; echo "x${a}x${b}x${c}x"; }
Index: head/tools/regression/bin/sh/builtins/read1.0.stdout
===================================================================
--- head/tools/regression/bin/sh/builtins/read1.0.stdout	(revision 190299)
+++ head/tools/regression/bin/sh/builtins/read1.0.stdout	(revision 190300)
@@ -1,19 +1,20 @@
 x1 2 3x
 x1x2 3x
 x1x2x3x
 x1x2x3xx
 x1x2x3x
 x1x2x3x
+x1x2x3x
 x	1  2 3 xx
 x1x2x3x
 xx2x3x
 x1xx3x
 x1xx3x
 x1x2x3x
 x1x2x3,,x
 x1x2x3x
 xx2x3x
 x1xx3x
 x1xx3x
 x1x2x3x
 x1x2x3,,x