onstyle attribute cannot be set with an AngularJS expression

[bertysentry]

<toggle onstyle="{{'btn-success'}}" ng-model="$ctrl.myValue"></toggle>

triggers a $compile:nodomevents error.

while

<toggle offstyle="{{'btn-default'}}" ng-model="$ctrl.myValue"></toggle>

works without any issue.

This is because AngularJS prevents setting on* attributes (like onload, onclick, etc.) with an AngularJS expression.

Using x-onstyle or data-onstyle doesn't change the behavior.

The only fix to this would be to change the name of this attribute, like style-on. Any other idea?

PS: Behavior seen with AngularJS 1.7.2

[bertysentry]

Fixed in #32 and merged.