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-rw-r--r--enum.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/enum.c b/enum.c
index df35c2fe03..a4863eaa96 100644
--- a/enum.c
+++ b/enum.c
@@ -667,11 +667,11 @@ first_i(i, ary)
else {
long n = NUM2LONG(ary[0]);
+ rb_ary_push(ary[1], i);
+ n--;
if (n <= 0) {
rb_iter_break();
}
- rb_ary_push(ary[1], i);
- n--;
ary[0] = INT2NUM(n);
}
return Qnil;
@@ -700,9 +700,12 @@ enum_first(argc, argv, obj)
ary[0] = ary[1] = Qnil;
}
else {
+ long len;
rb_scan_args(argc, argv, "01", &n);
- ary[0] = n;
- ary[1] = rb_ary_new2(NUM2LONG(n));
+ len = NUM2LONG(n);
+ if (len == 0) return rb_ary_new2(0);
+ ary[0] = INT2NUM(len);
+ ary[1] = rb_ary_new2(len);
}
rb_block_call(obj, id_each, 0, 0, first_i, (VALUE)ary);
@@ -1609,8 +1612,8 @@ take_i(i, arg)
VALUE i;
VALUE *arg;
{
- if (arg[1]-- == 0) rb_iter_break();
rb_ary_push(arg[0], i);
+ if (--arg[1] == 0) rb_iter_break();
return Qnil;
}
@@ -1637,6 +1640,7 @@ enum_take(obj, n)
rb_raise(rb_eArgError, "attempt to take negative size");
}
+ if (len == 0) return rb_ary_new2(0);
args[1] = len;
args[0] = rb_ary_new();
rb_block_call(obj, id_each, 0, 0, take_i, (VALUE)args);