Feature Request: Make options_description output optionally machine readable (ie --helpjson) to support auto-completion of process *arguments* in system shells

[d3fault]

This is a dupe of a feature request I filed for Qt's QCommandLineParser, so I'll just link to that instead of copy/pasting the description here: https://bugreports.qt.io/browse/QTBUG-74594

[vprus]

Thanks for your suggestion!

Sadly, I'm not sure it will be implemented in near future:

• I personally don't have the time to work on this
• Such a feature is most useful if it works the same in all programs, and
  there is no such de-facto standard