#include "ruby.h"
#include "internal/string.h"

static VALUE
bug_str_capacity(VALUE klass, VALUE str)
{
    if (!STR_EMBED_P(str) && STR_SHARED_P(str)) {
        return INT2FIX(0);
    }

    return LONG2FIX(rb_str_capacity(str));
}

void
Init_string_capacity(VALUE klass)
{
    rb_define_singleton_method(klass, "capacity", bug_str_capacity, 1);
}
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