AngularJS

SIML has a an Angular-specific parser available which includes special rules for directives and pseudo-classes. So, you can write stuff like this:

(Converted from live todomvc Angular example here)

section#main:cloak
  @show( todos.length )

  input#toggle-all:checkbox
    @model( allChecked )
    @click( markAll(allChecked) )
  label[for=toggle-all] 'Mark all as complete'

  ul#todo-list > li
    @repeat( todo in todos | filter:statusFilter )
    @class({
      completed: todo.completed,
      editing: todo == editedTodo
    })

    div.view
      input.toggle:checkbox
        @model( todo.completed )
        @change( todoCompleted(todo) )
      label
        '{{todo.title}}'
        @dblclick( editTodo(todo) )
      button.destroy
        @click( removeTodo(todo) )

    form
      @submit( doneEditing(todo) )
      input.edit
        @model( todo.title )
        @$todoBlur( doneEditing(todo) )
        @$todoFocus( todo == editedTodo )