updated for version 7.4.463
Problem:    Test 86 and 87 may hang on MS-Windows.
Solution:   Call inputrestore() after inputsave(). (Ken Takata)
diff --git a/src/testdir/test86.in b/src/testdir/test86.in
index b169293..819ae95 100644
--- a/src/testdir/test86.in
+++ b/src/testdir/test86.in
@@ -1384,6 +1384,7 @@
 :debug silent! py test_keyboard_interrupt()
 :redir END
 :0 debuggreedy
+:call inputrestore()
 :silent $put =output
 :unlet output
 :py del test_keyboard_interrupt