don't allow empty format string

diff --git a/util/grind/commands.g b/util/grind/commands.g
index f3078b2..e4b07f3 100644 (file)
--- a/util/grind/commands.g
+++ b/util/grind/commands.g
@@ -326,8 +326,7 @@ format_expression(p_tree *p;)
   { p_tree     p1; }
 :
   expression(p, 0)
-  [ '\\' 
-       [ name(&p1)     { register char *c = p1->t_str;
+  [ '\\' name(&p1)     { register char *c = p1->t_str;
                          while (*c) {
                                if (! strindex("doshcax", *c)) {
                                        error("illegal format: %c", *c);
@@ -337,8 +336,6 @@ format_expression(p_tree *p;)
                          }
                          *p = mknode(OP_FORMAT, *p, p1);
                        }
-       |
-       ]
   |
   ]
 ;