ed(1) still uses the default type (int) for two variables. These days
this is an anachronism (IMHO).

Reference: /n/sources/patch/applied/ed-default-type
Date: Mon Oct 11 10:58:13 CES 2010
Signed-off-by: steve@quintile.net

--- /sys/src/cmd/ed.c	Mon Oct 11 10:55:05 2010
+++ /sys/src/cmd/ed.c	Mon Oct 11 10:55:00 2010
@@ -856,7 +856,7 @@
 browse(void)
 {
 	int forward, n;
-	static bformat, bnum; /* 0 */
+	static int bformat, bnum; /* 0 */
 
 	forward = 1;
 	peekc = getchr();