golang-github-tdewolff-argp 0.0~git20231030.fa6c548-2 source package in Ubuntu

 The argp Go package provides a command-line argument parser
 following the GNU standard.
 .
   ./test -vo out.png --size 256 input.txt
 .
 with the following features:
 .
  * build-in help (-h and --help) message
  * scan arguments into struct fields with configuration in tags
  * scan into composite field types (arrays, slices, structs)
  * allow for nested sub commands
 .
 GNU command line argument rules:
 .
  * arguments are options when they begin with a hyphen -
  * multiple options can be combined: -abc is the same as -a -b -c
  * long options start with two hyphens: --abc is one option
  * option names are alphanumeric characters
  * options can have a value: -a 1 means that a has value 1
  * option values can be separated by a space, equal sign, or nothing: -a1 -
    a=1 -a 1 are all equal
  * options and non-options can be interleaved
  * the argument -- terminates all options so that all following arguments
    are treated as non-options
  * a single - argument is a non-option usually used to mean standard in or
    out streams
  * options may be specified multiple times, only the last one determines
    its value
  * options can have multiple values: -a 1 2 3 means that a is an
    array/slice/struct of three numbers of value [1,2,3]
 .
 See also github.com/tdewolff/prompt for a command-line prompter.