Added by Ondřej Ezr over 8 years ago.
Updated over 8 years ago.
Sort helper - in new rails to_a for string is not defined
Committed in r13970, thanks.
For the record:Redmine defined String#to_a on Redmine < 3 and it was removed by r13482 (#14534).source:tags/2.6.2/lib/redmine/core_ext/string/conversions.rb#L41
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