SWI-Prolog -- interpolate

Availability::- use_module(library(strings)).(can be autoloaded)

Establish a string from a template by replacing patterns. Supported patterns are:

{Name}: If Map contains Name=Value, insert Value using write/1. If Name does not appear in Map, raise an existence error. Name must satisfy the rules for a Prolog variable.
{Name,Default}: As above, but if Name does not appear in Map, use Value
{@(Goal)}: Insert the output (to current_output) of Goal here. For safety reasons only accepted if Options contains goals(true)