Why doesn't `allow_unregistered` work for me?

Open

#113 opened on Oct 20, 2021 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 30/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: cpp
Domain: cli

Research direction

Start with the linked source in backends/BoostArgs.cpp and trace the command_line_parser setup through options(oDesc), positional(pd), and allow_unregistered(). Reproduce the run() failure with the shown rawArgs, then determine why the positional limit is exceeded; done means the intended unregistered arguments no longer trigger this exception.

Written by the indexing model from the issue text.

Description

I still get too many positional options have been specified on the command line on run()

The excerpt

boost::program_options::variables_map vm;
try{
	auto parsed = boost::program_options::command_line_parser(rawArgs.argc, rawArgs.argv).options(oDesc).positional(pd).allow_unregistered().run();  //too many positional options have been specified on the command line
	boost::program_options::store(parsed, vm);
	boost::program_options::notify(vm);
	auto rest = boost::program_options::collect_unrecognized(parsed.options, boost::program_options::collect_unrecognized_mode::include_positional);
} catch(std::exception &ex) {
	PROCESS_CASE_OF_SYNTAX_ERROR_WHATABLE_EXCEPTION(ex);
}

The full source is here: https://github.com/HydrArgs/HydrArgs/blob/master/backends/BoostArgs.cpp

Dominant language: C++
Stars: 136
Forks: 117
PR merge metrics: No merged PRs in 30d

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