Reference for the fun command-line interface.

For a complete usage guide (including REPL details, environment variables, include paths, examples, and install locations), see fun.

Synopsis

fun [options] [script.fun] [-- args...]

If no script is supplied and interactive mode is available, fun starts a REPL (see ../repl/).

Common options

  • -i, --repl - start an interactive REPL
  • -v, --version - print version and exit
  • -h, --help - show help and exit

Options may vary between versions; run fun --help to see what your build supports.

Exit codes

  • 0 - success
  • non-zero - error during parse, compile, or runtime

Includes and library paths

  • FUN_LIB_DIR - environment variable that points to the stdlib location; when running from the repo, set this to ./lib.
  • DEFAULT_LIB_DIR - compiled-in fallback path determined at build/install time.

See also: ../includes/ for namespaced includes and search order.

Examples

Run a script:

FUN_LIB_DIR=./lib ./build/fun examples/hello.fun

Start the REPL:

./build/fun -i

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