v7_array_length issue

[biyuexiug]

include <stdio.h>
#include "v7.h"

int main(void)
{
struct v7* v7 = v7_create();
v7_val_t a = v7_mk_array(v7);

v7_array_push(v7, a, v7_mk_number(v7, 0));
v7_array_push(v7, a, v7_mk_number(v7, 1));
v7_array_push(v7, a, v7_mk_number(v7, 2));
printf("%d\n", v7_array_length(v7, a));

v7_array_del(v7, a, 0);
printf("%d\n", v7_array_length(v7, a));

v7_destroy(v7);
return 0;

}

the output is:
3
3
if I change v7_array_del(v7, a, 0); to v7_array_del(v7, a, 2);
the output is:
3
2

it seems that only the last entry can be deleted

[cpq]

FYI - the development of v7 is currently suspended in favor of https://github.com/cesanta/mjs