open-contracting/mapper — pull request #25 by florianpilz (2014-07-27 12:52:23+00:00)
Title: Make it possible to join indexed fields into an array of objects.

Example: a CSV with

foo_0_bar foo_1_bar
Hello Bye Bye

Can be transformed into
[{'name': 'Hello'}, {'name': 'Bye Bye'}]

via the mapping
[{'name': 'foo_#_bar'}]