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The extra whitespace was targeted at machine processing for a subset of users for a subset of runs of CLIs. On the other hand, there is a lot of concern over the extra verbose output. A user can set the help template for man, if desired. They can even do something (env? feature flag?) to make it only run when doing man generation. We also have #3174 in the works. So let's focus on the end-user reading `--help`. People wanting to use `help2man` have workarounds to do what they need. Fixes #3096
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Example of overriding the magic bool behavior
$ custom_bool --help
clap [..]
A simple to use, efficient, and full-featured Command Line Argument Parser
USAGE:
custom_bool[EXE] [OPTIONS] --foo <FOO> <BOOM>
ARGS:
<BOOM>
OPTIONS:
--bar <BAR> [default: false]
--foo <FOO>
-h, --help Print help information
-V, --version Print version information
$ custom_bool
? failed
error: The following required arguments were not provided:
--foo <FOO>
<BOOM>
USAGE:
custom_bool[EXE] [OPTIONS] --foo <FOO> <BOOM>
For more information try --help
$ custom_bool --foo true false
[examples/derive_ref/custom_bool.rs:31] opt = Opt {
foo: true,
bar: false,
boom: false,
}
$ custom_bool --foo true --bar true false
[examples/derive_ref/custom_bool.rs:31] opt = Opt {
foo: true,
bar: true,
boom: false,
}