Enum clap::AppSettings

#[non_exhaustive]
pub enum AppSettings {
    IgnoreErrors,
    WaitOnError,
    AllowHyphenValues,
    AllowNegativeNumbers,
    AllArgsOverrideSelf,
    AllowMissingPositional,
    TrailingVarArg,
    DontDelimitTrailingValues,
    InferLongArgs,
    InferSubcommands,
    SubcommandRequired,
    SubcommandRequiredElseHelp,
    AllowExternalSubcommands,
    Multicall,
    AllowInvalidUtf8ForExternalSubcommands,
    UseLongFormatForHelpSubcommand,
    SubcommandsNegateReqs,
    ArgsNegateSubcommands,
    SubcommandPrecedenceOverArg,
    ArgRequiredElseHelp,
    DeriveDisplayOrder,
    DontCollapseArgsInUsage,
    NextLineHelp,
    DisableColoredHelp,
    DisableHelpFlag,
    DisableHelpSubcommand,
    DisableVersionFlag,
    PropagateVersion,
    Hidden,
    HidePossibleValues,
    HelpExpected,
    NoBinaryName,
    NoAutoHelp,
    NoAutoVersion,
    // some variants omitted
}

Application level settings, which affect how Command operates

NOTE: When these settings are used, they apply only to current command, and are not propagated down or up through child or parent subcommands

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

IgnoreErrors

Deprecated, replaced with Command::ignore_errors

Derive: replace #[clap(setting = IgnoreErrors)] with #[clap(ignore_errors = true)]

Builder: replace cmd.setting(IgnoreErrors) with cmd.ignore_errors = true

WaitOnError

Deprecated, replace

let cmd = clap::Command::new("cmd")
    .global_setting(clap::AppSettings::WaitOnError)
    .arg(clap::arg!(--flag));
let m = cmd.get_matches();

with

let cmd = clap::Command::new("cmd")
    .arg(clap::arg!(--flag));
let m = match cmd.try_get_matches() {
    Ok(m) => m,
    Err(err) => {
        if err.use_stderr() {
            let _ = err.print();

            eprintln!("\nPress [ENTER] / [RETURN] to continue...");
            use std::io::BufRead;
            let mut s = String::new();
            let i = std::io::stdin();
            i.lock().read_line(&mut s).unwrap();

            std::process::exit(2);
        } else {
            let _ = err.print();
            std::process::exit(0);
        }
    }
};

AllowHyphenValues

Deprecated, replaced with Command::allow_hyphen_values and Arg::is_allow_hyphen_values_set

Derive: replace #[clap(setting = AllowHyphenValues)] with #[clap(allow_hyphen_values = true)]

Builder: replace cmd.setting(AllowHyphenValues) with cmd.allow_hyphen_values(true)

AllowNegativeNumbers

Deprecated, replaced with Command::allow_negative_numbers and Command::is_allow_negative_numbers_set

Derive: replace #[clap(setting = AllowNegativeNumbers)] with #[clap(allow_negative_numbers = true)]

Builder: replace cmd.setting(AllowNegativeNumbers) with cmd.allow_negative_numbers(true)

AllArgsOverrideSelf

Deprecated, replaced with ArgAction::Set

The new actions (ArgAction::Set, ArgAction::SetTrue) do this by default.

See ArgAction::StoreValue and ArgAction::IncOccurrence for how to migrate

AllowMissingPositional

Deprecated, replaced with Command::allow_missing_positional and Command::is_allow_missing_positional_set

Derive: replace #[clap(setting = AllowMissingPositional)] with #[clap(allow_missing_positional = true)]

Builder: replace cmd.setting(AllowMissingPositional) with cmd.allow_missing_positional(true)

TrailingVarArg

Deprecated, replaced with Command::trailing_var_arg and Command::is_trailing_var_arg_set

Derive: replace #[clap(setting = TrailingVarArg)] with #[clap(trailing_var_arg = true)]

Builder: replace cmd.setting(TrailingVarArg) with cmd.trailing_var_arg(true)

DontDelimitTrailingValues

Deprecated, replaced with Command::dont_delimit_trailing_values and Command::is_dont_delimit_trailing_values_set

Derive: replace #[clap(setting = DontDelimitTrailingValues)] with #[clap(dont_delimit_trailing_values = true)]

Builder: replace cmd.setting(DontDelimitTrailingValues) with cmd.dont_delimit_trailing_values(true)

InferLongArgs

Deprecated, replaced with Command::infer_long_args

Derive: replace #[clap(setting = InferLongArgs)] with #[clap(infer_long_args = true)]

Builder: replace cmd.setting(InferLongArgs) with cmd.infer_long_args(true)

InferSubcommands

Deprecated, replaced with Command::infer_subcommands

Derive: replace #[clap(setting = InferSubcommands)] with #[clap(infer_subcommands = true)]

Builder: replace cmd.setting(InferSubcommands) with cmd.infer_subcommands(true)

SubcommandRequired

Deprecated, replaced with Command::subcommand_required and Command::is_subcommand_required_set

Derive: replace #[clap(setting = SubcommandRequired)] with #[clap(subcommand_required = true)]

Builder: replace cmd.setting(SubcommandRequired) with cmd.subcommand_required(true)

SubcommandRequiredElseHelp

Deprecated, replaced with Command::subcommand_required combined with Command::arg_required_else_help.

Derive: replace #[clap(setting = SubcommandRequiredElseHelp)] with #[clap(subcommand_required = true, arg_required_else_help = true)]

Builder: replace cmd.setting(SubcommandRequiredElseHelp) with cmd.subcommand_required(true).arg_required_else_help(true)

AllowExternalSubcommands

Deprecated, replaced with Command::allow_external_subcommands and Command::is_allow_external_subcommands_set

Derive: replace #[clap(setting = AllowExternalSubcommands)] with #[clap(allow_external_subcommands = true)]

Builder: replace cmd.setting(AllowExternalSubcommands) with cmd.allow_external_subcommands(true)

Multicall

Deprecated, replaced with Command::multicall and Command::is_multicall_set

Derive: replace #[clap(setting = Multicall)] with #[clap(multicall = true)]

Builder: replace cmd.setting(Multicall) with cmd.multicall(true)

AllowInvalidUtf8ForExternalSubcommands

Deprecated, replaced with Command::allow_invalid_utf8_for_external_subcommands and Command::is_allow_invalid_utf8_for_external_subcommands_set

Derive: replace #[clap(setting = AllowInvalidUtf8ForExternalSubcommands)] with #[clap(allow_invalid_utf8_for_external_subcommands = true)]

Builder: replace cmd.setting(AllowInvalidUtf8ForExternalSubcommands) with cmd.allow_invalid_utf8_for_external_subcommands(true)

UseLongFormatForHelpSubcommand

Deprecated, this is now the default

Derive: remove #[clap(setting = UseLongFormatForHelpSubcommand)]

Builder: remove cmd.setting(UseLongFormatForHelpSubcommand)

SubcommandsNegateReqs

Deprecated, replaced with Command::subcommand_negates_reqs and Command::is_subcommand_negates_reqs_set

Derive: replace #[clap(setting = SubcommandsNegateReqs)] with #[clap(subcommand_negates_reqs = true)]

Builder: replace cmd.setting(SubcommandsNegateReqs) with cmd.subcommand_negates_reqs(true)

ArgsNegateSubcommands

Deprecated, replaced with Command::args_conflicts_with_subcommands and Command::is_args_conflicts_with_subcommands_set

Derive: replace #[clap(setting = ArgsNegateSubcommands)] with #[clap(args_conflicts_with_subcommands = true)]

Builder: replace cmd.setting(ArgsNegateSubcommands) with cmd.args_conflicts_with_subcommands(true)

SubcommandPrecedenceOverArg

Deprecated, replaced with Command::subcommand_precedence_over_arg and Command::is_subcommand_precedence_over_arg_set

Derive: replace #[clap(setting = SubcommandPrecedenceOverArg)] with #[clap(subcommand_precedence_over_arg = true)]

Builder: replace cmd.setting(SubcommandPrecedenceOverArg) with cmd.subcommand_precedence_over_arg(true)

ArgRequiredElseHelp

Deprecated, replaced with Command::arg_required_else_help and Command::is_arg_required_else_help_set

Derive: replace #[clap(setting = ArgRequiredElseHelp)] with #[clap(arg_required_else_help = true)]

Builder: replace cmd.setting(ArgRequiredElseHelp) with cmd.arg_required_else_help(true)

DeriveDisplayOrder

Displays the arguments and subcommands in the help message in the order that they were declared in, and not alphabetically which is the default.

To override the declaration order, see Arg::display_order and Command::display_order.

Examples

Command::new("myprog")
    .global_setting(AppSettings::DeriveDisplayOrder)
    .get_matches();

DontCollapseArgsInUsage

Deprecated, replaced with Command::dont_collapse_args_in_usage and Command::is_dont_collapse_args_in_usage_set

Derive: replace #[clap(setting = DontCollapseArgsInUsage)] with #[clap(dont_collapse_args_in_usage = true)]

Builder: replace cmd.setting(DontCollapseArgsInUsage) with cmd.dont_collapse_args_in_usage(true)

NextLineHelp

Deprecated, replaced with Command::next_line_help and Command::is_next_line_help_set

Derive: replace #[clap(setting = NextLineHelp)] with #[clap(next_line_help = true)]

Builder: replace cmd.setting(NextLineHelp) with cmd.next_line_help(true)

DisableColoredHelp

Deprecated, replaced with Command::disable_colored_help and Command::is_disable_colored_help_set

Derive: replace #[clap(setting = DisableColoredHelp)] with #[clap(disable_colored_help = true)]

Builder: replace cmd.setting(DisableColoredHelp) with cmd.disable_colored_help(true)

DisableHelpFlag

Deprecated, replaced with Command::disable_help_flag and Command::is_disable_help_flag_set

Derive: replace #[clap(setting = DisableHelpFlag)] with #[clap(disable_help_flag = true)]

Builder: replace cmd.setting(DisableHelpFlag) with cmd.disable_help_flag(true)

DisableHelpSubcommand

Deprecated, replaced with Command::disable_help_subcommand and Command::is_disable_help_subcommand_set

Derive: replace #[clap(setting = DisableHelpSubcommand)] with #[clap(disable_help_subcommand = true)]

Builder: replace cmd.setting(DisableHelpSubcommand) with cmd.disable_help_subcommand(true)

DisableVersionFlag

Deprecated, replaced with Command::disable_version_flag and Command::is_disable_version_flag_set

Derive: replace #[clap(setting = DisableVersionFlag)] with #[clap(disable_version_flag = true)]

Builder: replace cmd.setting(DisableVersionFlag) with cmd.disable_version_flag(true)

PropagateVersion

Deprecated, replaced with Command::propagate_version and Command::is_propagate_version_set

Derive: replace #[clap(setting = PropagateVersion)] with #[clap(propagate_version = true)]

Builder: replace cmd.setting(PropagateVersion) with cmd.propagate_version(true)

Hidden

Deprecated, replaced with Command::hide and Command::is_hide_set

Derive: replace #[clap(setting = Hidden)] with #[clap(hide = true)]

Builder: replace cmd.setting(Hidden) with cmd.hide(true)

HidePossibleValues

Deprecated, replaced with Command::hide_possible_values and Arg::is_hide_possible_values_set

Derive: replace #[clap(setting = HidePossibleValues)] with #[clap(hide_possible_values = true)]

Builder: replace cmd.setting(HidePossibleValues) with cmd.hide_possible_values(true)

HelpExpected

Deprecated, replaced with Command::help_expected

Derive: replace #[clap(setting = HelpExpected)] with #[clap(help_expected = true)]

Builder: replace cmd.setting(HelpExpected) with cmd.help_expected(true)

NoBinaryName

Deprecated, replaced with Command::no_binary_name

Derive: replace #[clap(setting = NoBinaryName)] with #[clap(no_binary_name = true)]

Builder: replace cmd.setting(NoBinaryName) with cmd.no_binary_name(true)

NoAutoHelp

Deprecated, replaced with Arg::action

Derive: replace #[clap(setting = NoAutoHelp)] with setting an explicit action on your help argument

Builder: replace cmd.setting(NoAutoHelp) with setting an explicit action on your help argument

NoAutoVersion

Deprecated, replaced with Arg::action

Derive: replace #[clap(setting = NoAutoVersion)] with setting an explicit action on your version argument

Builder: replace cmd.setting(NoAutoVersion) with setting an explicit action on your version argument

Trait Implementations

impl BitOr<AppSettings> for AppSettings

type Output = AppFlags

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self::Output

Performs the | operation.

impl Clone for AppSettings

fn clone(&self) -> AppSettings

Returns a copy of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AppSettings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for AppSettings

Available on crate feature yaml only.

Deprecated in Issue #3087, maybe clap::Parser would fit your use case?

type Err = String

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err>

Parses a string s to return a value of this type.

impl PartialEq<AppSettings> for AppSettings

fn eq(&self, other: &AppSettings) -> bool

This method tests for self and other values to be equal, and is used by ==.

const fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AppSettings

impl StructuralPartialEq for AppSettings