18.4 Interaction Configuration (original) (raw)

18.4 Interaction Configuration🔗ℹ

The racket/interaction-info library provides a way to register a langauge’s configuration for aread-eval-print loop and editor.

A parameter that provides configuration for a language for use by interactive development tools, such as a command-line evaluation prompt with syntax coloring and indentation support. This parameter is typically set by a configure-runtime module; see alsoLanguage Run-Time Configuration.

Instead of providing configuration information directly, thecurrent-interaction-info parameter specifies a module to load, a exported function to call, and data to pass as an argument to the exported function. The result of that function should be another one that accepts two arguments: a symbol indicating the kind of information requested (as defined by external tools), and a default value that normally should be returned if the symbol is not recognized.

For information on defining a new #lang language, seesyntax/module-reader.

Added in version 8.3.0.2 of package base.