commandry

commandry is a command line parser for Standard ML.

val cli: string Cli.parser =
Cli.app "hello""1.0.0""Says hello to someone"
(fn name => name)
|> Cli.positional {name = "name", help = "Someone's name"}
|> Cli.cli
funmain () =
Cli.exec (fn name => print ("Hello, " ^ name)) cli

Features

• Declarative builder pattern: Construct command line by chaining functions together
• Rich argument types: Supports flags, string/int options with defaults, and positional arguments (required, optional or variadic)
• Nested subcommands: Create hierarchical command structures
• Auto-generated help: Automatic --help and --version flags with formatted usage text

Installation

The library is a single file, copy src/cli.sml into your project.

Documentation

See the docs/ directory for detailed guides:

• Getting Started
• API Reference
• Examples