\lastnodechar: fix catcode

diff --git a/src/luatexja.lua b/src/luatexja.lua
index b4e2e68..fbda46e 100644 (file)
--- a/src/luatexja.lua
+++ b/src/luatexja.lua
@@ -351,7 +351,7 @@ do
             r = tostring(n.char)
          end
       end
-      tex.sprint(r)
+      tex.sprint(-2, r)
    end
 end