ash: fix $IFS handling in read. closes bug 235
diff --git a/shell/ash_test/ash-read/read_ifs.right b/shell/ash_test/ash-read/read_ifs.right
new file mode 100644
index 0000000..027ecd1
--- /dev/null
+++ b/shell/ash_test/ash-read/read_ifs.right
@@ -0,0 +1,7 @@
+.a. .b. .c.
+.a. .b. .c.
+.a. .. .b,c.
+.a. .. .b,c.
+.a. .. .c.
+.a. .. .c. .d.
+.a. .. .b,c,d , ,.
diff --git a/shell/ash_test/ash-read/read_ifs.tests b/shell/ash_test/ash-read/read_ifs.tests
new file mode 100755
index 0000000..cf7cd93
--- /dev/null
+++ b/shell/ash_test/ash-read/read_ifs.tests
@@ -0,0 +1,7 @@
+printf 'a\t\tb\tc\n' | ( IFS=$(printf "\t") read a b c; echo ".$a. .$b. .$c." )
+printf 'a\t\tb\tc\n' | ( IFS=$(printf " \t") read a b c; echo ".$a. .$b. .$c." )
+printf 'a,,b,c\n' | ( IFS="," read a b c; echo ".$a. .$b. .$c." )
+printf 'a,,b,c\n' | ( IFS=" ," read a b c; echo ".$a. .$b. .$c." )
+printf 'a ,, c\n' | ( IFS=" ," read a b c; echo ".$a. .$b. .$c." )
+printf 'a ,, c d\n' | ( IFS=" ," read a b c d; echo ".$a. .$b. .$c. .$d." )
+printf ' a,,b,c,d , ,\n' | ( IFS=" ," read a b c; echo ".$a. .$b. .$c." )