hush: fix IFS handling in read
$ echo "X:Y:" | (IFS=": " read x y; echo "|$x|$y|")
|X|Y|
$ echo "X:Y : " | (IFS=": " read x y; echo "|$x|$y|")
|X|Y|
function old new delta
shell_builtin_read 1320 1426 +106
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/hush_test/hush-read/read_ifs2.tests b/shell/hush_test/hush-read/read_ifs2.tests
new file mode 100755
index 0000000..f01a689
--- /dev/null
+++ b/shell/hush_test/hush-read/read_ifs2.tests
@@ -0,0 +1,9 @@
+echo "X:Y:Z:" | (IFS=": " read x y; echo "|$x|$y|")
+echo "X:Y:Z" | (IFS=": " read x y; echo "|$x|$y|")
+echo "X:Y:" | (IFS=": " read x y; echo "|$x|$y|")
+echo "X:Y" | (IFS=": " read x y; echo "|$x|$y|")
+echo "X:" | (IFS=": " read x y; echo "|$x|$y|")
+echo "X" | (IFS=": " read x y; echo "|$x|$y|")
+echo "" | (IFS=": " read x y; echo "|$x|$y|")
+echo Whitespace should be trimmed too:
+echo "X:Y : " | (IFS=": " read x y; echo "|$x|$y|")