Wrapping helper properties into multiple lines

It’s not included on emblemjs.com, so I’ve looked into the test specs, and I’ve found that it is possible to wrap properties into more lines with the use of brackets. But it doesn’t seem to work properly with Ember helpers, for example with Ember.Select Static attributes are good (class="something"), however attribute bindings doesn’t seem to work either in the form of value=something or valueBinding="something". This is what I tried:

Ember.Select [
  content=something
  optionValuePath="content.value"
  optionLabelPath="content.label"
  value=somethingValue
  class="something" ]

[kjhangiani]

Converting:

= inline-edit-select selectedOption=model.supervisorUser allOptions=filteredUsers prompt="Supervisor" name="supervisorUser" saveAction="updateControlsDatum"

To:

inline-edit-select [
  selectedOption=model.supervisorUser 
  allOptions=filteredUsers
  prompt="Supervisor" 
  name="supervisorUser"
  saveAction="updateControlsDatum" ]

fails for me using ember-cli / emblem 0.5.0 and ember-cli-emblem-hbs-printer 0.2.1 with the following error:

File: soxhub-client/templates/controls-datum/inline-form.emblem (16)
Expected _1BeginStatement, _1DEDENT or end of input but "\uEFEF" found.

I have tried various positions on the brackets as well as indenting, but I cannot seem to get this to compile. Am I doing something wrong? inline-edit-select is an ember component

[lolmaus]

How do i split normal html tag attributes into multiple lines?

How do i provide element/helper content when its attributes are split into multiple lines?