Puppet

It looks like the behavior when processing a template using arrays whose members are variables (other arrays) has changed between 0.24.7 and 0.24.8.

Using the following code:

#!/usr/bin/env puppet

$a = ['a1', 'a2']

$b = ['b1', 'b2']

$c = [$a, $b]

$d = ['d1', 'd2', ['ds1', 'ds2']]

file { "testfile":
    path => "/tmp/testfile",
    content => template("/tmp/testfile.erb")
}

With template:

<% c.each do |val| -%>
c val: <%= val %>
<% end -%>

<% d.each do |val| -%>
d val: <%= val %>
<% end -%>

Produces the following template output in 0.24.7 produces the expected behavior:

c val: a1
c val: a2
c val: b1
c val: b2

d val: d1
d val: d2
d val: ds1
d val: ds2

While the output with version 0.24.8 produces new behavior:

c val: a1a2
c val: b1b2

d val: d1
d val: d2
d val: ds1
d val: ds2