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help.rs
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help.rs
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use super::utils;
use clap::{arg, builder::PossibleValue, error::ErrorKind, Arg, ArgAction, ArgGroup, Command};
fn setup() -> Command<'static> {
Command::new("test")
.author("Kevin K.")
.about("tests stuff")
.version("1.3")
}
fn empty_args() -> impl IntoIterator<Item = String> {
std::iter::empty()
}
#[test]
fn help_short() {
let m = setup().try_get_matches_from(vec!["myprog", "-h"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::DisplayHelp);
}
#[test]
fn help_long() {
let m = setup().try_get_matches_from(vec!["myprog", "--help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::DisplayHelp);
}
#[test]
fn help_no_subcommand() {
let m = setup().try_get_matches_from(vec!["myprog", "help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::UnknownArgument);
}
#[test]
fn help_subcommand() {
let m = setup()
.subcommand(
Command::new("test")
.about("tests things")
.arg(arg!(-v --verbose "with verbosity")),
)
.try_get_matches_from(vec!["myprog", "help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::DisplayHelp);
}
#[test]
fn help_multi_subcommand_error() {
let cmd = Command::new("ctest").subcommand(
Command::new("subcmd").subcommand(
Command::new("multi")
.about("tests subcommands")
.author("Kevin K. <kbknapp@gmail.com>")
.version("0.1")
.arg(arg!(
-f --flag "tests flags"
))
.arg(
arg!(
-o --option <scoption> "tests options"
)
.required(false)
.num_args(1..)
.action(ArgAction::Append),
),
),
);
let err = cmd
.try_get_matches_from(["ctest", "help", "subcmd", "multi", "foo"])
.unwrap_err();
static EXPECTED: &str = "error: The subcommand 'foo' wasn't recognized
USAGE:
ctest subcmd multi [OPTIONS]
For more information try --help
";
utils::assert_eq(EXPECTED, err.to_string());
}
#[test]
fn req_last_arg_usage() {
static LAST_ARG_REQ_MULT: &str = "example 1.0
USAGE:
example <FIRST>... [--] <SECOND>...
ARGS:
<FIRST>... First
<SECOND>... Second
OPTIONS:
-h, --help Print help information
-V, --version Print version information
";
let cmd = Command::new("example")
.version("1.0")
.arg(Arg::new("FIRST").help("First").num_args(1..).required(true))
.arg(
Arg::new("SECOND")
.help("Second")
.num_args(1..)
.required(true)
.last(true),
);
utils::assert_output(cmd, "example --help", LAST_ARG_REQ_MULT, false);
}
#[test]
fn args_with_last_usage() {
static LAST_ARG_USAGE: &str = "flamegraph 0.1
USAGE:
flamegraph [OPTIONS] [BINFILE] [-- <ARGS>...]
ARGS:
<BINFILE> The path of the binary to be profiled. for a binary.
<ARGS>... Any arguments you wish to pass to the being profiled.
OPTIONS:
-v, --verbose Prints out more stuff.
-t, --timeout <SECONDS> Timeout in seconds.
-f, --frequency <HERTZ> The sampling frequency.
-h, --help Print help information
-V, --version Print version information
";
let cmd = Command::new("flamegraph")
.version("0.1")
.trailing_var_arg(true)
.arg(
Arg::new("verbose")
.help("Prints out more stuff.")
.short('v')
.long("verbose")
.action(ArgAction::SetTrue),
)
.arg(
Arg::new("timeout")
.help("Timeout in seconds.")
.short('t')
.long("timeout")
.value_name("SECONDS"),
)
.arg(
Arg::new("frequency")
.help("The sampling frequency.")
.short('f')
.long("frequency")
.value_name("HERTZ"),
)
.arg(
Arg::new("binary path")
.help("The path of the binary to be profiled. for a binary.")
.value_name("BINFILE"),
)
.arg(
Arg::new("pass through args")
.help("Any arguments you wish to pass to the being profiled.")
.action(ArgAction::Set)
.num_args(1..)
.last(true)
.value_name("ARGS"),
);
utils::assert_output(cmd, "flamegraph --help", LAST_ARG_USAGE, false);
}
#[test]
fn subcommand_short_help() {
let m = utils::complex_app().try_get_matches_from(vec!["clap-test", "subcmd", "-h"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::DisplayHelp);
}
#[test]
fn subcommand_long_help() {
let m = utils::complex_app().try_get_matches_from(vec!["clap-test", "subcmd", "--help"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::DisplayHelp);
}
#[test]
fn subcommand_help_rev() {
let m = utils::complex_app().try_get_matches_from(vec!["clap-test", "help", "subcmd"]);
assert!(m.is_err());
assert_eq!(m.unwrap_err().kind(), ErrorKind::DisplayHelp);
}
#[test]
fn complex_help_output() {
static HELP: &str = "clap-test v1.4.8
Kevin K. <kbknapp@gmail.com>
tests clap library
USAGE:
clap-test [OPTIONS] [ARGS] [SUBCOMMAND]
ARGS:
<positional> tests positionals
<positional2> tests positionals with exclusions
<positional3>... tests specific values [possible values: vi, emacs]
OPTIONS:
-o, --option <opt>... tests options
-f, --flag... tests flags
-F tests flags with exclusions
--long-option-2 <option2> tests long options with exclusions
-O, --option3 <option3> specific vals [possible values: fast, slow]
--multvals <one> <two> Tests multiple values, not mult occs
--multvalsmo <one> <two> Tests multiple values, and mult occs
--minvals2 <minvals> <minvals>... Tests 2 min vals
--maxvals3 <maxvals>... Tests 3 max vals
--optvaleq[=<optval>] Tests optional value, require = sign
--optvalnoeq [<optval>] Tests optional value
-h, --help Print help information
-V, --version Print version information
SUBCOMMANDS:
subcmd tests subcommands
help Print this message or the help of the given subcommand(s)
";
utils::assert_output(utils::complex_app(), "clap-test --help", HELP, false);
}
#[test]
fn after_and_before_help_output() {
static AFTER_HELP: &str = "some text that comes before the help
clap-test v1.4.8
tests clap library
USAGE:
clap-test
OPTIONS:
-h, --help Print help information
-V, --version Print version information
some text that comes after the help
";
let cmd = Command::new("clap-test")
.version("v1.4.8")
.about("tests clap library")
.before_help("some text that comes before the help")
.after_help("some text that comes after the help");
utils::assert_output(cmd.clone(), "clap-test -h", AFTER_HELP, false);
utils::assert_output(cmd, "clap-test --help", AFTER_HELP, false);
}
#[test]
fn after_and_before_long_help_output() {
static AFTER_HELP: &str = "some text that comes before the help
clap-test v1.4.8
tests clap library
USAGE:
clap-test
OPTIONS:
-h, --help Print help information
-V, --version Print version information
some text that comes after the help
";
static AFTER_LONG_HELP: &str = "some longer text that comes before the help
clap-test v1.4.8
tests clap library
USAGE:
clap-test
OPTIONS:
-h, --help
Print help information
-V, --version
Print version information
some longer text that comes after the help
";
let cmd = Command::new("clap-test")
.version("v1.4.8")
.about("tests clap library")
.before_help("some text that comes before the help")
.after_help("some text that comes after the help")
.before_long_help("some longer text that comes before the help")
.after_long_help("some longer text that comes after the help");
utils::assert_output(cmd.clone(), "clap-test --help", AFTER_LONG_HELP, false);
utils::assert_output(cmd, "clap-test -h", AFTER_HELP, false);
}
static MULTI_SC_HELP: &str = "ctest-subcmd-multi 0.1
Kevin K. <kbknapp@gmail.com>
tests subcommands
USAGE:
ctest subcmd multi [OPTIONS]
OPTIONS:
-f, --flag tests flags
-o, --option <scoption>... tests options
-h, --help Print help information
-V, --version Print version information
";
#[test]
fn multi_level_sc_help() {
let cmd = Command::new("ctest").subcommand(
Command::new("subcmd").subcommand(
Command::new("multi")
.about("tests subcommands")
.author("Kevin K. <kbknapp@gmail.com>")
.version("0.1")
.arg(arg!(
-f --flag "tests flags"
))
.arg(
arg!(
-o --option <scoption> "tests options"
)
.required(false)
.num_args(1..)
.action(ArgAction::Append),
),
),
);
utils::assert_output(cmd, "ctest help subcmd multi", MULTI_SC_HELP, false);
}
#[test]
fn no_wrap_help() {
let cmd = Command::new("ctest")
.term_width(0)
.override_help(MULTI_SC_HELP);
utils::assert_output(cmd, "ctest --help", &format!("{}\n", MULTI_SC_HELP), false);
}
#[test]
fn no_wrap_default_help() {
static DEFAULT_HELP: &str = "ctest 1.0
USAGE:
ctest
OPTIONS:
-h, --help Print help information
-V, --version Print version information
";
let cmd = Command::new("ctest").version("1.0").term_width(0);
utils::assert_output(cmd, "ctest --help", DEFAULT_HELP, false);
}
#[test]
#[cfg(feature = "wrap_help")]
fn wrapped_help() {
static WRAPPED_HELP: &str = "test
USAGE:
test [OPTIONS]
OPTIONS:
-a, --all
Also do versioning for private crates (will not be
published)
--exact
Specify inter dependency version numbers exactly with
`=`
--no-git-commit
Do not commit version changes
--no-git-push
Do not push generated commit and tags to git remote
-h, --help
Print help information
";
let cmd = Command::new("test")
.term_width(67)
.arg(
Arg::new("all")
.short('a')
.long("all")
.help("Also do versioning for private crates (will not be published)"),
)
.arg(
Arg::new("exact")
.long("exact")
.help("Specify inter dependency version numbers exactly with `=`"),
)
.arg(
Arg::new("no_git_commit")
.long("no-git-commit")
.help("Do not commit version changes"),
)
.arg(
Arg::new("no_git_push")
.long("no-git-push")
.help("Do not push generated commit and tags to git remote"),
);
utils::assert_output(cmd, "test --help", WRAPPED_HELP, false);
}
#[test]
#[cfg(feature = "wrap_help")]
fn unwrapped_help() {
static UNWRAPPED_HELP: &str = "test
USAGE:
test [OPTIONS]
OPTIONS:
-a, --all Also do versioning for private crates
(will not be published)
--exact Specify inter dependency version numbers
exactly with `=`
--no-git-commit Do not commit version changes
--no-git-push Do not push generated commit and tags to
git remote
-h, --help Print help information
";
let cmd = Command::new("test")
.term_width(68)
.arg(
Arg::new("all")
.short('a')
.long("all")
.help("Also do versioning for private crates (will not be published)"),
)
.arg(
Arg::new("exact")
.long("exact")
.help("Specify inter dependency version numbers exactly with `=`"),
)
.arg(
Arg::new("no_git_commit")
.long("no-git-commit")
.help("Do not commit version changes"),
)
.arg(
Arg::new("no_git_push")
.long("no-git-push")
.help("Do not push generated commit and tags to git remote"),
);
utils::assert_output(cmd, "test --help", UNWRAPPED_HELP, false);
}
#[test]
#[cfg(all(feature = "wrap_help"))]
fn possible_value_wrapped_help() {
static WRAPPED_HELP: &str = "test
USAGE:
test [OPTIONS]
OPTIONS:
--possible-values <possible_values>
Possible values:
- short_name:
Long enough help message, barely warrant wrapping
- second:
Short help gets handled the same
--possible-values-with-new-line <possible_values_with_new_line>
Possible values:
- long enough name to trigger new line:
Really long enough help message to clearly warrant
wrapping believe me
- second
--possible-values-without-new-line <possible_values_without_new_line>
Possible values:
- name: Short enough help message with no wrapping
- second: short help
-h, --help
Print help information
";
let cmd = Command::new("test")
.term_width(67)
.arg(
Arg::new("possible_values")
.long("possible-values")
.action(ArgAction::Set)
.value_parser([
PossibleValue::new("short_name")
.help("Long enough help message, barely warrant wrapping"),
PossibleValue::new("second").help("Short help gets handled the same"),
]),
)
.arg(
Arg::new("possible_values_with_new_line")
.long("possible-values-with-new-line")
.action(ArgAction::Set)
.value_parser([
PossibleValue::new("long enough name to trigger new line").help(
"Really long enough help message to clearly warrant wrapping believe me",
),
PossibleValue::new("second"),
]),
)
.arg(
Arg::new("possible_values_without_new_line")
.long("possible-values-without-new-line")
.action(ArgAction::Set)
.value_parser([
PossibleValue::new("name").help("Short enough help message with no wrapping"),
PossibleValue::new("second").help("short help"),
]),
);
utils::assert_output(cmd, "test --help", WRAPPED_HELP, false);
}
#[test]
fn complex_subcommand_help_output() {
static SC_HELP: &str = "clap-test-subcmd 0.1
Kevin K. <kbknapp@gmail.com>
tests subcommands
USAGE:
clap-test subcmd [OPTIONS] [--] [scpositional]
ARGS:
<scpositional> tests positionals
OPTIONS:
-o, --option <scoption>... tests options
-f, --flag... tests flags
-s, --subcmdarg <subcmdarg> tests other args
-h, --help Print help information
-V, --version Print version information
";
let a = utils::complex_app();
utils::assert_output(a, "clap-test subcmd --help", SC_HELP, false);
}
#[test]
fn issue_626_unicode_cutoff() {
static ISSUE_626_CUTOFF: &str = "ctest 0.1
USAGE:
ctest [OPTIONS]
OPTIONS:
-c, --cafe <FILE> A coffeehouse, coffee shop, or café is an
establishment which primarily serves hot
coffee, related coffee beverages (e.g., café
latte, cappuccino, espresso), tea, and other
hot beverages. Some coffeehouses also serve
cold beverages such as iced coffee and iced
tea. Many cafés also serve some type of food,
such as light snacks, muffins, or pastries.
-h, --help Print help information
-V, --version Print version information
";
let cmd = Command::new("ctest").version("0.1").term_width(70).arg(
Arg::new("cafe")
.short('c')
.long("cafe")
.value_name("FILE")
.help(
"A coffeehouse, coffee shop, or café is an establishment \
which primarily serves hot coffee, related coffee beverages \
(e.g., café latte, cappuccino, espresso), tea, and other hot \
beverages. Some coffeehouses also serve cold beverages such as \
iced coffee and iced tea. Many cafés also serve some type of \
food, such as light snacks, muffins, or pastries.",
)
.action(ArgAction::Set),
);
utils::assert_output(cmd, "ctest --help", ISSUE_626_CUTOFF, false);
}
static HIDE_POS_VALS: &str = "ctest 0.1
USAGE:
ctest [OPTIONS]
OPTIONS:
-p, --pos <VAL> Some vals [possible values: fast, slow]
-c, --cafe <FILE> A coffeehouse, coffee shop, or café.
-h, --help Print help information
-V, --version Print version information
";
#[test]
fn hide_possible_vals() {
let cmd = Command::new("ctest")
.version("0.1")
.arg(
Arg::new("pos")
.short('p')
.long("pos")
.value_name("VAL")
.value_parser(["fast", "slow"])
.help("Some vals")
.action(ArgAction::Set),
)
.arg(
Arg::new("cafe")
.short('c')
.long("cafe")
.value_name("FILE")
.hide_possible_values(true)
.value_parser(["fast", "slow"])
.help("A coffeehouse, coffee shop, or café.")
.action(ArgAction::Set),
);
utils::assert_output(cmd, "ctest --help", HIDE_POS_VALS, false);
}
#[test]
fn hide_single_possible_val() {
let cmd = Command::new("ctest")
.version("0.1")
.arg(
Arg::new("pos")
.short('p')
.long("pos")
.value_name("VAL")
.value_parser([
"fast".into(),
"slow".into(),
PossibleValue::new("secret speed").hide(true),
])
.help("Some vals")
.action(ArgAction::Set),
)
.arg(
Arg::new("cafe")
.short('c')
.long("cafe")
.value_name("FILE")
.help("A coffeehouse, coffee shop, or café.")
.action(ArgAction::Set),
);
utils::assert_output(cmd, "ctest --help", HIDE_POS_VALS, false);
}
#[test]
fn possible_vals_with_help() {
static POS_VALS_HELP: &str = "ctest 0.1
USAGE:
ctest [OPTIONS]
OPTIONS:
-p, --pos <VAL>
Some vals
Possible values:
- fast
- slow: not as fast
-c, --cafe <FILE>
A coffeehouse, coffee shop, or café.
-h, --help
Print help information
-V, --version
Print version information
";
let app = Command::new("ctest")
.version("0.1")
.arg(
Arg::new("pos")
.short('p')
.long("pos")
.value_name("VAL")
.value_parser([
PossibleValue::new("fast"),
PossibleValue::new("slow").help("not as fast"),
PossibleValue::new("secret speed").hide(true),
])
.help("Some vals")
.action(ArgAction::Set),
)
.arg(
Arg::new("cafe")
.short('c')
.long("cafe")
.value_name("FILE")
.help("A coffeehouse, coffee shop, or café.")
.action(ArgAction::Set),
);
utils::assert_output(app, "ctest --help", POS_VALS_HELP, false);
}
#[test]
fn issue_626_panic() {
static ISSUE_626_PANIC: &str = "ctest 0.1
USAGE:
ctest [OPTIONS]
OPTIONS:
-c, --cafe <FILE>
La culture du café est très développée
dans de nombreux pays à climat chaud
d\'Amérique, d\'Afrique et d\'Asie, dans
des plantations qui sont cultivées pour
les marchés d\'exportation. Le café est
souvent une contribution majeure aux
exportations des régions productrices.
-h, --help
Print help information
-V, --version
Print version information
";
let cmd = Command::new("ctest")
.version("0.1")
.term_width(52)
.arg(Arg::new("cafe")
.short('c')
.long("cafe")
.value_name("FILE")
.help("La culture du café est très développée dans de nombreux pays à climat chaud d'Amérique, \
d'Afrique et d'Asie, dans des plantations qui sont cultivées pour les marchés d'exportation. \
Le café est souvent une contribution majeure aux exportations des régions productrices.")
.action(ArgAction::Set));
utils::assert_output(cmd, "ctest --help", ISSUE_626_PANIC, false);
}
#[test]
fn issue_626_variable_panic() {
for i in 10..320 {
let _ = Command::new("ctest")
.version("0.1")
.term_width(i)
.arg(Arg::new("cafe")
.short('c')
.long("cafe")
.value_name("FILE")
.help("La culture du café est très développée dans de nombreux pays à climat chaud d'Amérique, \
d'Afrique et d'Asie, dans des plantations qui sont cultivées pour les marchés d'exportation. \
Le café est souvent une contribution majeure aux exportations des régions productrices.")
.action(ArgAction::Set))
.try_get_matches_from(vec!["ctest", "--help"]);
}
}
#[test]
fn final_word_wrapping() {
static FINAL_WORD_WRAPPING: &str = "ctest 0.1
USAGE:
ctest
OPTIONS:
-h, --help
Print help
information
-V, --version
Print
version
information
";
let cmd = Command::new("ctest").version("0.1").term_width(24);
utils::assert_output(cmd, "ctest --help", FINAL_WORD_WRAPPING, false);
}
static WRAPPING_NEWLINE_CHARS: &str = "ctest 0.1
USAGE:
ctest [mode]
ARGS:
<mode> x, max, maximum 20 characters, contains
symbols.
l, long Copy-friendly, 14
characters, contains symbols.
m, med, medium Copy-friendly, 8
characters, contains symbols.
OPTIONS:
-h, --help Print help information
-V, --version Print version information
";
#[test]
fn wrapping_newline_chars() {
let cmd = Command::new("ctest")
.version("0.1")
.term_width(60)
.arg(Arg::new("mode").help(
"x, max, maximum 20 characters, contains symbols.\n\
l, long Copy-friendly, 14 characters, contains symbols.\n\
m, med, medium Copy-friendly, 8 characters, contains symbols.\n",
));
utils::assert_output(cmd, "ctest --help", WRAPPING_NEWLINE_CHARS, false);
}
#[test]
fn wrapping_newline_variables() {
let cmd = Command::new("ctest")
.version("0.1")
.term_width(60)
.arg(Arg::new("mode").help(
"x, max, maximum 20 characters, contains symbols.{n}\
l, long Copy-friendly, 14 characters, contains symbols.{n}\
m, med, medium Copy-friendly, 8 characters, contains symbols.{n}",
));
utils::assert_output(cmd, "ctest --help", WRAPPING_NEWLINE_CHARS, false);
}
#[test]
fn dont_wrap_urls() {
let cmd = Command::new("Example")
.term_width(30)
.subcommand(Command::new("update").arg(
Arg::new("force-non-host")
.help("Install toolchains that require an emulator. See https://github.com/rust-lang/rustup/wiki/Non-host-toolchains")
.long("force-non-host")
.takes_value(false))
);
const EXPECTED: &str = "\
Example-update
USAGE:
Example update [OPTIONS]
OPTIONS:
--force-non-host
Install toolchains
that require an
emulator. See
https://github.com/rust-lang/rustup/wiki/Non-host-toolchains
-h, --help
Print help
information
";
utils::assert_output(cmd, "Example update --help", EXPECTED, false);
}
static OLD_NEWLINE_CHARS: &str = "ctest 0.1
USAGE:
ctest [OPTIONS]
OPTIONS:
-m Some help with some wrapping
(Defaults to something)
-h, --help Print help information
-V, --version Print version information
";
#[test]
fn old_newline_chars() {
let cmd = Command::new("ctest").version("0.1").arg(
Arg::new("mode")
.short('m')
.action(ArgAction::SetTrue)
.help("Some help with some wrapping\n(Defaults to something)"),
);
utils::assert_output(cmd, "ctest --help", OLD_NEWLINE_CHARS, false);
}
#[test]
fn old_newline_variables() {
let cmd = Command::new("ctest").version("0.1").arg(
Arg::new("mode")
.short('m')
.action(ArgAction::SetTrue)
.help("Some help with some wrapping{n}(Defaults to something)"),
);
utils::assert_output(cmd, "ctest --help", OLD_NEWLINE_CHARS, false);
}
#[test]
fn issue_688_hide_pos_vals() {
static ISSUE_688: &str = "ctest 0.1
USAGE:
ctest [OPTIONS]
OPTIONS:
--filter <filter> Sets the filter, or sampling method, to use for interpolation when resizing the particle
images. The default is Linear (Bilinear). [possible values: Nearest, Linear, Cubic,
Gaussian, Lanczos3]
-h, --help Print help information
-V, --version Print version information
";
let filter_values = ["Nearest", "Linear", "Cubic", "Gaussian", "Lanczos3"];
let app1 = Command::new("ctest")
.version("0.1")
.term_width(120)
.hide_possible_values(true)
.arg(Arg::new("filter")
.help("Sets the filter, or sampling method, to use for interpolation when resizing the particle \
images. The default is Linear (Bilinear). [possible values: Nearest, Linear, Cubic, Gaussian, Lanczos3]")
.long("filter")
.value_parser(filter_values)
.action(ArgAction::Set));
utils::assert_output(app1, "ctest --help", ISSUE_688, false);
let app2 = Command::new("ctest")
.version("0.1")
.term_width(120)
.arg(Arg::new("filter")
.help("Sets the filter, or sampling method, to use for interpolation when resizing the particle \
images. The default is Linear (Bilinear).")
.long("filter")
.value_parser(filter_values)
.action(ArgAction::Set));
utils::assert_output(app2, "ctest --help", ISSUE_688, false);
let app3 = Command::new("ctest")
.version("0.1")
.term_width(120)
.arg(Arg::new("filter")
.help("Sets the filter, or sampling method, to use for interpolation when resizing the particle \
images. The default is Linear (Bilinear). [possible values: Nearest, Linear, Cubic, Gaussian, Lanczos3]")
.long("filter")
.action(ArgAction::Set));
utils::assert_output(app3, "ctest --help", ISSUE_688, false);
}
#[test]
fn issue_702_multiple_values() {
static ISSUE_702: &str = "myapp 1.0
foo
bar
USAGE:
myapp [OPTIONS] [--] [ARGS]
ARGS:
<arg1> some option
<arg2>... some option
OPTIONS:
-s, --some <some> some option
-o, --other <other> some other option
-l, --label <label>... a label
-h, --help Print help information
-V, --version Print version information
";
let cmd = Command::new("myapp")
.version("1.0")
.author("foo")
.about("bar")
.arg(Arg::new("arg1").help("some option"))
.arg(
Arg::new("arg2")
.action(ArgAction::Set)
.num_args(1..)
.help("some option"),
)
.arg(
Arg::new("some")
.help("some option")
.short('s')
.long("some")
.action(ArgAction::Set),
)
.arg(
Arg::new("other")
.help("some other option")
.short('o')
.long("other")
.action(ArgAction::Set),
)
.arg(
Arg::new("label")
.help("a label")
.short('l')
.long("label")