puppet-lint dies with inline_template syntax

[TomaszUrugOlszewski]

Hello,

This syntax is based on https://docs.puppet.com/puppet/4.9/lang_template.html
Example code:

class nope {
  $htpasswd_template = @(END)
<%- @htpasswd.keys.each do |x| -%>
<%- if @htpasswd[x].key?('password') -%>
<%= x %>:<%= @htpasswd[x]['password'] %>
<%- end -%>
<%- end -%>
END
  file { $htpasswd_file:
    ensure => file,
    owner  => 'root',
    group  => 'www-data',
    mode   => '0640',
    content => inline_template($htpasswd_template)
  }
}

And beautiful error:

/var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/plugins/check_whitespace.rb:181:in `block (2 levels) in check': undefined method `each' for nil:NilClass (NoMethodError)
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/plugins/check_whitespace.rb:144:in `each'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/plugins/check_whitespace.rb:144:in `each_with_index'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/plugins/check_whitespace.rb:144:in `block in check'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/plugins/check_whitespace.rb:127:in `each'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/plugins/check_whitespace.rb:127:in `check'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/checkplugin.rb:21:in `run'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/checks.rb:58:in `block in run'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/checks.rb:56:in `each'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/checks.rb:56:in `run'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint.rb:191:in `run'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/bin.rb:59:in `block in run'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/bin.rb:56:in `each'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/lib/puppet-lint/bin.rb:56:in `run'
	from /var/lib/gems/2.1.0/gems/puppet-lint-2.1.1/bin/puppet-lint:7:in `<top (required)>'
	from /usr/local/bin/puppet-lint:23:in `load'
	from /usr/local/bin/puppet-lint:23:in `<main>'

[rodjek]

This is due to the lack of support for heredocs in the current release of puppet-lint. There is a fix for this in #650 which should be part of the next release.