| purpose | returns each item in the list, replacing within each title placeholders for filters, parameters and variables with their corresponding values |
|---|---|
| input | a selection of titles |
| parameter | the substitute operator optionally accepts a variable number of parameters, see below for details |
| output | the input titles with placeholders for filter expressions, parameter and variables replaced with their corresponding values |
Learn more about how to use Filters
New in v5.3.0
The substitute operator replaces any placeholders in the input titles in the following order:
- filter expressions
- parameters to the
substituteoperator - variables
| placeholder syntax | description |
$n$ | Text substitution of a parameter provided to the operator, where n is the position of the parameter starting with 1 for the first parameter. Unmatched placeholders pass through unchanged. |
$(varname)$ | Text substitution of a variable. Undefined variables are replaced with an empty string. |
${ filter expression }$ | Text substitution of the first result of evaluating a filter expression. In other words, if the filter returns multiple titles only the first one will be used. |