access $['someid'] in moustage binding

[DartBot]

This issue was originally filed by @zoechi

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I tried to reference a method of a sibling as event handler inside a moustache expression.

<a href="#" on-click="{{ $['routelink'].parentRoute }}">articles</a>

Should this work? how?

I get
Transform ScriptCompactor on bwu_polymer_routing|example/example_01.html threw error: Bad state: invalid symbol name: "$['routelink'].parentRoute"

Polymer 0.12.1

Dart VM version: 1.6.0-edge.39058 (Fri Aug 8 15:50:20 2014) on "linux_x64"

[DartBot]

This comment was originally written by @zoechi

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Polymer/polymer#446 (comment)
seems to be the answer (not supported)

[DartBot]

This comment was originally written by @zoechi

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Seems to be a PR that adds support for exactly my use case.
https://github.com/Polymer/polymer-dev/pull/30/files

[DartBot]

This issue has been moved to dart-archive/polymer-dart#266.