more unittests

--HG--
branch : trunk
diff --git a/jinja2/_speedups.c b/jinja2/_speedups.c
index dcf7248..61bdec7 100644
--- a/jinja2/_speedups.c
+++ b/jinja2/_speedups.c
@@ -92,7 +92,7 @@
 		if (next_escp > inp) {
 			/* copy unescaped chars between inp and next_escp */
 			Py_UNICODE_COPY(outp, inp, next_escp-inp);
-			outp += next_escp-inp;
+			outp += next_escp - inp;
 		}
 
 		/* escape 'next_escp' */