Issue #14094 has been reported by R.I. Pienaar.
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Bug #14094: there are many methods on the template binding that prevents
certain variables from being used
https://projects.puppetlabs.com/issues/14094
Author: R.I. Pienaar
Status: Unreviewed
Priority: Normal
Assignee:
Category:
Target version:
Affected Puppet version:
Keywords:
Branch:
The template wrapper has a bunch of the usual suspect methods:
<pre>
% puppet -e 'notice(inline_template("<%= methods.sort.inspect %>"))'
notice: Scope(Class[main]): ["==", "===", "=~", "__id__", "__send__", "alert",
"all_tags", "assert_that", "b64encode", "class", "class_def", "classes",
"clone", "crit", "debug", "decode64", "decode_b", "display", "dup", "emerg",
"encode64", "enum_for", "eql?", "equal?", "err", "execfail", "execpipe",
"extend", "file", "file=", "freeze", "frozen?", "has_variable?", "hash", "id",
"info", "inspect", "instance_eval", "instance_exec", "instance_of?",
"instance_variable_defined?", "instance_variable_get", "instance_variable_set",
"instance_variables", "is_a?", "kind_of?", "meta_def", "meta_eval",
"meta_undef", "method", "method_missing", "methods", "nil?", "notice",
"object_id", "private_methods", "protected_methods", "public_methods",
"respond_to?", "result", "returning", "scope", "scope=", "send",
"singleton_class", "singleton_methods", "string", "string=", "tags", "taguri",
"taguri=", "taint", "tainted?", "tap", "threadlock", "to_a", "to_enum",
"to_json", "to_pson", "to_s", "to_yaml", "to_yaml_properties", "to_yaml_style",
"to_zaml", "type", "untaint", "warning", "yaml_property_munge",
"zamlized_class_name"]
</pre>
Which if a user mere to try and use any of these in his template would yield
weird results:
<pre>
% FACTER_err="foo" puppet -e 'notice(inline_template("<%= err %>"))'
/usr/lib/ruby/site_ruby/1.8/puppet/util.rb:77: warning: multiple values for a
block parameter (0 for 1)
</pre>
This is quite unexpected, a perfectly legit variable in a puppet manifest is
suddenly unusable in a template in a weird way
This comes up quite regularly on #puppet, not sure what the best thing is here
but some kind of Blank Slate style class might be a solution
tested against 2.6 and master
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