Discard input at the end of global commands

If there is no any match, then the rest of the line
is not read, and it means that ed thins it is a new
command.

ed.c

@@ -65,28 +65,35 @@ static struct undo udata;
 static int newcmd;
 
 
+
+static void
+discard(void)
+{
+	int c;
+
+	/* discard until end of line */
+	if (repidx < 0  &&
+	    ((cmdsiz > 0 && cmdline[cmdsiz-1] != '\n') || cmdsiz == 0)) {
+		while ((c = getchar()) != '\n' && c != EOF)
+			/* nothing */;
+	}
+}
+
 static void undo(void);
 
 static void
 error(char *msg)
 {
-	int c;
-
 	exstatus = 1;
 	lasterr = msg;
 	fputs("?\n", stderr);
 
 	if (optverbose)
 		fprintf(stderr, "%s\n", msg);
-
-	/* discard until end of line */
-	if (repidx < 0 && cmdsiz > 0 && cmdline[cmdsiz-1] != '\n') {
-		while ((c = getchar()) != '\n' && c != EOF)
-			/* nothing */;
-	}
-
 	if (!newcmd)
 		undo();
+
+	discard();
 	curln = ocurln;
 	longjmp(savesp, 1);
 }
@@ -1293,6 +1300,7 @@ doglobal(void)
 		}
 		docmd();
 	}
+	discard();   /* cover the case of not matchingc anything */
 }
 
 static void