catch-all-stdin

creating user files in src
skipped src/root_command.sh (exists)
created ./cli
run ./cli --help to test your bash script
cli - Sample application

Usage:
  cli [OPTIONS] [--] [FILE...]
  cli --help | -h
  cli --version | -v

Options:
  --format, -f FORMAT
    Specify file format
    Allowed: csv, json
    Default: json

  --help, -h
    Show this help

  --version, -v
    Show version number

Arguments:
  FILE...
    Path to one or more files. Reads from stdin if empty or "-".

Examples:
  cli file1 file2 --format csv
  cli --format csv file1 file2
  cat file1 | cli --format csv
  cat file* | cli - --format csv

args:
- ${args[--format]} = csv

other_args:
- ${other_args[*]} = file1 file2
- ${other_args[0]} = file1
- ${other_args[1]} = file2

collected file contents:
file1 content
file2 content


args:
- ${args[--format]} = csv

other_args:
- ${other_args[*]} = file1 file2
- ${other_args[0]} = file1
- ${other_args[1]} = file2

collected file contents:
file1 content
file2 content


args:
- ${args[--format]} = csv

collected file contents:
file1 content

args:
- ${args[--format]} = json

other_args:
- ${other_args[*]} = -
- ${other_args[0]} = -

collected file contents:
file1 content
file2 content