diff -r 765ab1b672a3 -r 8a31742781c1 jitcraft/Scanner.cpp
--- a/jitcraft/Scanner.cpp	Sun Jul 01 16:36:39 2012 -0700
+++ b/jitcraft/Scanner.cpp	Sun Jul 01 18:21:15 2012 -0700
@@ -387,6 +387,8 @@
             c = getChar();
             if (c == '=')
                 return TOK_ASSIGN_ADD;
+            if (c == '+')
+                return TOK_INCREMENT;
             putChar(c);
             return TOK_PLUS;
 
@@ -415,6 +417,8 @@
             c = getChar();
             if (c == '=')
                 return TOK_ASSIGN_SUB;
+            if (c == '-')
+                return TOK_DECREMENT;
             putChar(c);
             return TOK_MINUS;