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26th April 2015 at 11:59am


The vars widget allows multiple variables to be set in one operation. In some situations it can result in simpler code than using the more flexible SetWidget.

Content and Attributes

The content of the <$vars> widget is the scope for the value assigned to the variable.

{attributes not starting with $}Each attribute name specifies a variable name. The attribute value is assigned to the variable


Consider a case where you need to set multiple variables.

Using the <$vars> widget, this situation may be handled in the following way:

\define helloworld() Hello world!

<$vars greeting="Hi" me={{!!title}} sentence=<<helloworld>>>
  <<greeting>>! I am <<me>> and I say: <<sentence>>

In contrast, here is the same example using the <$set> widget:

<$set name="greeting" value="Hi" >
<$set name="me" value={{!!title}} >
<$set name="sentence" value=<<helloworld>> >
  <<greeting>>! I am <<me>> and I say: <<sentence>>


It should be noted that this widget differs from the set widget in the following ways:

  • A fallback (also known as "emptyValue") cannot be specified
  • Filters cannot be used to produce a conditional variable assignement
  • Variable names must be literal strings