6.3 The (ice-9 getopt-long) Module

The (ice-9 getopt-long) module exports two procedures: getopt-long and option-ref.

• getopt-long takes a list of strings — the command line arguments — and an option specification. It parses the command line arguments according to the option specification and returns a data structure that encapsulates the results of the parsing.
• option-ref then takes the parsed data structure and a specific option's name, and returns information about that option in particular.

To make these procedures available to your Guile script, include the expression (use-modules (ice-9 getopt-long)) somewhere near the top, before the first usage of getopt-long or option-ref.

• getopt-long Example: A short getopt-long example.
• Option Specification: How to write an option specification.
• Command Line Format: The expected command line format.
• getopt-long Reference: Full documentation for getopt-long.
• option-ref Reference: Full documentation for option-ref.