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Support fallback_to_usage in derive macro#376

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pacak merged 4 commits intomasterfrom
ftu
Jul 22, 2024
Merged

Support fallback_to_usage in derive macro#376
pacak merged 4 commits intomasterfrom
ftu

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@pacak pacak commented Jul 21, 2024 •
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You can specify them next to command annotation or options annotation. In either way if parser requires some arguments and user passed none - instead of producing "required ... not found" type of error bpaf will print the usage page for this parser or subcommand

Usage for option parser

#[derive(Debug, Clone, Bpaf)]
enum Commands {
    #[bpaf(command, fallback_to_usage)]
    Action {
        ...
    }
}

usage for subcommand

#[derive(Debug, Clone, Bpaf)]
#[bpaf(options, fallback_to_usage)]
struct Options {
    ...
}

@pacak pacak merged commit 74ef468 into master Jul 22, 2024
@pacak pacak deleted the ftu branch July 22, 2024 11:44
@pacak pacak mentioned this pull request Sep 6, 2024
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