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    # ............................................................................................... #
    #
    # Copyright (c) 2012-2017 Institut National des Sciences Appliquées de Lyon (INSA Lyon) and others
    #
    # This program and the accompanying materials are made available under the
    # terms of the Eclipse Public License 2.0 which is available at
    # http://www.eclipse.org/legal/epl-2.0.
    #
    # SPDX-License-Identifier: EPL-2.0
    #
    # ............................................................................................... #

    ----
    This module provides helper functions to deal with ANSI escape codes for console outputs.

    All function names are self-explanatory. They _print_ the corresponding ANSI code.

    Note that [`likelySupported`](#likelySupported_0) tests if the current
    operating system is _likely_ to support ANSI codes. It merely checks that the host operating
    system is not MS Windows, which does not support ANSI codes without a 3rd-party driver.

    See also: [Wikipedia on ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code)
    ----
    module gololang.AnsiCodes

    function likelySupported = ->
      not System.getProperty("os.name"): contains("Windows")

    function reset = -> print("\u001B[0m")

    function bold           = -> print("\u001B[1m")
    function underscore     = -> print("\u001B[4m")
    function blink          = -> print("\u001B[5m")
    function reverse_video  = -> print("\u001B[7m")
    function concealed      = -> print("\u001B[8m")

    function fg_black   = -> print("\u001B[30m")
    function fg_red     = -> print("\u001B[31m")
    function fg_green   = -> print("\u001B[32m")
    function fg_yellow  = -> print("\u001B[33m")
    function fg_blue    = -> print("\u001B[34m")
    function fg_magenta = -> print("\u001B[35m")
    function fg_cyan    = -> print("\u001B[36m")
    function fg_white   = -> print("\u001B[37m")

    function bg_black   = -> print("\u001B[40m")
    function bg_red     = -> print("\u001B[41m")
    function bg_green   = -> print("\u001B[42m")
    function bg_yellow  = -> print("\u001B[43m")
    function bg_blue    = -> print("\u001B[44m")
    function bg_magenta = -> print("\u001B[45m")
    function bg_cyan    = -> print("\u001B[46m")
    function bg_white   = -> print("\u001B[47m")

    function cursor_position  = |line, column| -> print("\u001B[" + line + ";" + column + "H")

    function cursor_save_position     = -> print("\u001B[s")
    function cursor_restore_position  = -> print("\u001B[u")

    function cursor_up        = |lines| -> print("\u001B[" + lines + "A")
    function cursor_down      = |lines| -> print("\u001B[" + lines + "B")
    function cursor_forward   = |columns| -> print("\u001B[" + columns + "C")
    function cursor_backward  = |columns| -> print("\u001B[" + columns + "D")

    function erase_display  = -> print("\u001B[2J")
    function erase_line     = -> print("\u001B[K")