Update Rust crate clap to 3.2.7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
clap	dependencies	minor	3.1.18 -> 3.2.7

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Release Notes

clap-rs/clap

v3.2.7

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Fixes

• Global arguments should override env-sourced arguments

v3.2.6

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Fixes

• Don't panic when parsing --=

v3.2.5

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Fixes

• (derive) Fix regression with #[clap(default_value_os_t ...)] introduced in v3.2.3

v3.2.4

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Fixes

• (derive) Provide more clearer deprecation messages for #[clap(parse)] attribute (#​3832)

v3.2.3

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Fixes

• Moved deprecations to be behind the deprecated Cargo.toml feature (#​3830)
  • For now, it is disabled by default though we are considering enabling it by
    default as we release the next major version to help draw attention to the
    deprecation migration path

v3.2.2

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Fixes

• (derive) Improve the highlighted code for deprecation warnings

gated behind unstable-v4

• (derive) Default to #[clap(value_parser, action)] instead of #[clap(parse)] (#​3827)

v3.2.1

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v3.2.0

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Compatibility

MSRV is now 1.56.0 (#​3732)

Behavior

• Defaults no longer satisfy required and its variants (#​3793)
• When misusing ArgMatches::value_of and friends, debug asserts were turned into panics

Moving (old location deprecated)

• clap::{PossibleValue, ValueHint} to clap::builder::{PossibleValue, ValueHint}
• clap::{Indices, OsValues, ValueSource, Values} to clap::parser::{Indices, OsValues, ValueSource, Values}
• clap::ArgEnum to clap::ValueEnum (#​3799)

Replaced

• Arg::allow_invalid_utf8 with Arg::value_parser(value_parser!(PathBuf)) (#​3753)
• Arg::validator / Arg::validator_os with Arg::value_parser (#​3753)
• Arg::validator_regex with users providing their own builder::TypedValueParser (#​3756)
• Arg::forbid_empty_values with builder::NonEmptyStringValueParser / builder::PathBufValueParser (#​3753)
• Arg::possible_values with Arg::value_parser([...]), builder::PossibleValuesParser, or builder::EnumValueParser (#​3753)
• Arg::max_occurrences with arg.action(ArgAction::Count).value_parser(value_parser!(u8).range(..N)) for flags (#​3797)
• Arg::multiple_occurrences with ArgAction::Append or ArgAction::Count though positionals will need Arg::multiple_values (#​3772, #​3797)
• Command::args_override_self with ArgAction::Set (#​2627, #​3797)
• AppSettings::NoAutoVersion with ArgAction or Command::disable_version_flag (#​3800)
• AppSettings::NoHelpVersion with ArgAction or Command::disable_help_flag / Command::disable_help_subcommand (#​3800)
• ArgMatches::{value_of, value_of_os, value_of_os_lossy, value_of_t} with ArgMatches::{get_one,remove_one} (#​3753)
• ArgMatches::{values_of, values_of_os, values_of_os_lossy, values_of_t} with ArgMatches::{get_many,remove_many} (#​3753)
• ArgMatches::is_valid_arg with ArgMatches::{try_get_one,try_get_many} (#​3753)
• ArgMatches::occurrences_of with ArgMatches::value_source or ArgAction::Count (#​3797)
• ArgMatches::is_present with ArgMatches::contains_id or ArgAction::SetTrue (#​3797)
• ArgAction::StoreValue with ArgAction::Set or ArgAction::Append (#​3797)
• ArgAction::IncOccurrences with ArgAction::SetTrue or ArgAction::Count (#​3797)
• (derive) #[clap(parse(...))] replaced with: (#​3589, #​3794)
  • For default parsers (no parse attribute), deprecation warnings can be
    silenced by opting into the new behavior by adding either #[clap(action)]
    or #[clap(value_parser)] (ie requesting the default behavior for these
    attributes). Alternatively, the unstable-v4 feature changes the default
    away from parse to action/value_parser.
  • For #[clap(parse(from_flag))] replaced with #[clap(action = ArgAction::SetTrue)] (#​3794)
  • For #[clap(parse(from_occurrences))] replaced with #[clap(action = ArgAction::Count)] though the field's type must be u8 (#​3794)
  • For #[clap(parse(from_os_str)] for PathBuf, replace it with
    #[clap(value_parser)] (as mentioned earlier this will call
    value_parser!(PathBuf) which will auto-select the right ValueParser
    automatically).
  • For #[clap(parse(try_from_str = ...)], replace it with #[clap(value_parser = ...)]
  • For most other cases, a type implementing TypedValueParser will be needed and specify it with #[clap(value_parser = ...)]

Features

• Parsed, typed arguments via Arg::value_parser / ArgMatches::{get_one,get_many} (#​2683, #​3732)
  • Several built-in TypedValueParsers available with an API open for expansion
  • value_parser!(T) macro for selecting a parser for a given type (#​3732) and open to expansion via the ValueParserFactory trait (#​3755)
  • [&str] is implicitly a value parser for possible values
  • All ArgMatches getters do not assume required arguments (#​2505)
  • Add ArgMatches::remove_* variants to transfer ownership
  • Add ArgMatches::try_* variants to avoid panics for developer errors (#​3621)
  • Add a get_raw to access the underlying OsStrs
  • PathBuf value parsers imply ValueHint::AnyPath for completions (#​3732)
• Explicit control over parsing via Arg::action (#​3774)
  • ArgAction::StoreValue: existing takes_value(true) behavior
  • ArgAction::IncOccurrences: existing takes_value(false) behavior
  • ArgAction::Help: existing --help behavior
  • ArgAction::Version: existing --version behavior
  • ArgAction::Set: Overwrite existing values (like Arg::multiple_occurrences mixed with Command::args_override_self) (#​3777)
  • ArgAction::Append: like Arg::multiple_occurrences (#​3777)
  • ArgAction::SetTrue: Treat --flag as --flag=true (#​3775)
    • Implies Arg::default_value("false") (#​3786)
    • Parses Arg::env via Arg::value_parser
  • ArgAction::SetFalse: Treat --flag as --flag=false (#​3775)
    • Implies Arg::default_value("true") (#​3786)
    • Parses Arg::env via Arg::value_parser
  • ArgAction::Count: Treat --flag --flag --flag as --flag=1 --flag=2 --flag=3 (#​3775)
    • Implies Arg::default_value("0") (#​3786)
    • Parses Arg::env via Arg::value_parser
• (derive) Opt-in to new Arg::value_parser / Arg::action with either #[clap(value_parser)] (#​3589, #​3742) / #[clap(action)] attributes (#​3794)
  • Default ValueParser is determined by value_parser! (#​3199, #​3496)
  • Default ArgAction is determine by a hard-coded lookup on the type (#​3794)
• Command::multicall is now stable for busybox-like programs and REPLs (#​2861, #​3684)
• ArgMatches::{try_,}contains_id for checking if there are values for an argument that mirrors the new get_{one,many} API

Fixes

• Don't correct argument id in default_value_ifs_os(#​3815)

parser

• Set ArgMatches::value_source and ArgMatches::occurrences_of for external subcommands (#​3732)
• Use value delimiter for Arg::default_missing_values (#​3761, #​3765)
• SplitArg::default_value / Arg::env on value delimiters independent of whether -- was used (#​3765)
• Allow applying defaults to flags (#​3294, 3775)
• Defaults no longer satisfy required and its variants (#​3793)

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