testing wrapping in yargs

postcss --help

Usage: bin/postcss -use|-p plugin [--config|-c config.json] --output|-o output.
css input.css

Options:
  -c, --config   JSON file with plugin configuration
  -u, --use      postcss plugin name (can be used multiple times)     [required]
  -o, --output   Output file
  -d, --dir      Output directory
  --safe         Enable postcss safe mode.                             [boolean]
  -v, --version  Show version number
  -h, --help     Show help

Examples:
  postcss --use autoprefixer -c options.json -o screen.css screen.css                 U
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  postcss --use autoprefixer --autoprefixer.browsers "> 5%" -o screen.css screen.css  P
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  postcss -u postcss-cachify -u autoprefixer -d build *.css                           U
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