Issue #20923 has been updated by Raphaël Pinson.
Right. To give just a simple example of why this shouldn't become the default: an `capitalize()` function currently gets an empty value if the variable passed is not instantiated. If `:undef` wasn't munged, then it would get the `:undef` symbol and would very likely return the `:Undef` symbol if not check is made on the type. On the other hand, the need to manage `:undef` in functions is potentially not limited to hiera, so it makes sense to have a generic way of opting-in for function developers. I actually believe that hiera functions could even opt-in by default (instead of using a `hiera_munge_undef` option in puppet.conf) since I think the current behavior in hiera to be faulty. ---------------------------------------- Bug #20923: Hiera cannot take `undef` as a default value https://projects.puppetlabs.com/issues/20923#change-91675 * Author: Raphaël Pinson * Status: In Topic Branch Pending Review * Priority: Normal * Assignee: * Category: * Target version: * Affected Puppet version: * Keywords: * Branch: https://github.com/puppetlabs/puppet/pull/1670 ---------------------------------------- As discussed with Jeff McCune yesterday, I believe #13210 is not a duplicate of #15329, as #13210 can be fixed without fixing #15329 per se. Here's the idea: * Implement a new `:honor_undef` option for functions, defaulting to `false`; * Implement a new `:hiera_munge_undef` option in puppet.conf, defaulting to `true` for backwards compatibility; * Use `:honor_undef = true` in all hiera functions when `:hiera_munge_undef` is set to `false`. The code can be found in this PR: https://github.com/puppetlabs/puppet/pull/1670 -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://projects.puppetlabs.com/my/account -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/puppet-bugs?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
