cmd: fix arglist iterator not finding all relevant opts/args in certain cases

cmd/arglist.c

@@ -5,9 +5,9 @@
 #include <blue/term/print.h>
 #include <blue/term/tty.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdio.h>
 
 B_BTREE_DEFINE_SIMPLE_INSERT(
 	struct b_arglist_option, opt_node, opt_id, put_arglist_option)
@@ -859,14 +859,15 @@ int b_arglist_iterator_begin(
 		}
 
 		b_btree_iterator_begin(&opt->opt_values, &it->_arg_it);
+		bool done = false;
+
 		while (1) {
 			if (!b_btree_iterator_is_valid(&it->_arg_it)) {
 				if (arg_filter == B_COMMAND_INVALID_ID) {
-					break;
+					done = true;
 				}
 
-				val = NULL;
-				return -1;
+				break;
 			}
 
 			val = b_unbox(
@@ -878,10 +879,15 @@ int b_arglist_iterator_begin(
 				continue;
 			}
 
+			done = true;
 			break;
 		}
 
-		break;
+		if (done) {
+			break;
+		}
+
+		b_btree_iterator_next(&it->_opt_it);
 	}
 
 	it->opt_id = opt->opt_id;