v4.1.4

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Fixes

• (help) Respect disable_colored_help when using arg_required_else_help

Performance

• Speed up compiling arg! macro

v4.1.3

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Fixes

• (error) Improve suggested flag/value/subcommand when two share a long preifx
• (error) When suggesting one of several subcommands, use the plural subcommands, rather than subcommand

v4.1.2

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Fixes

• In documentation, refer to get_flag, rather than get_one::<bool>

v4.1.1

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Fixes

• (error) Small softening attempt for "unexpected argument" error

v4.1.0

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Compatibility

MSRV changed to 1.64.0

For apps with custom --help and --version flags:

• Descriptions for --help and --version changed

When apps have errors imitating clap's error style:

• Error message style was changed, including
  • Moving away from "did you mean" to tips
  • Leading letter is lower case
  • "For more" added some punctuation

Features

• ArgMatches::get_occurrences support for argument values to be grouped by their occurrence

Fixes

• (derive) Allow upgrade_from when arguments / subcommands are explicitly marked as required
• (help) Try be more clearer and succinct with --help and --version (also helps with overflow)
• (error) Try to be more clearer and succinct with error messages
• (error) Officially adopt an error style guide

v4.0.32

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Fixes

• (parser) When overriding required(true), consider args that conflict with its group

v4.0.31

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Performance

• Speed up parsing when a lot of different flags are present (100 unique flags)

v4.0.30

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Fixes

• (error) Improve error for args_conflicts_with_subcommand

v4.0.29

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v4.0.28

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Fixes

• Fix wasm support which was broken in 4.0.27

v4.0.27

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Features

• Have Arg::value_parser accept Vec<impl Into<PossibleValue>>
• Implement Display and FromStr for ColorChoice

Fixes

• Remove soundness issue by switching from atty to is-terminal

v4.0.26

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Fixes

• (error) Fix typos in ContextKind::as_str

v4.0.25

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Features

• (error) Report available subcommands when required subcommand is missing

v4.0.24

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Fixes

• Avoid panic when printing an argument that isn't built

v4.0.23

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Fixes

• Don't panic on reporting invalid-long errors when followed by invalid UTF8
• (help) Clarified argument to help subcommand

v4.0.22

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Fixes

• (help) Don't overflow into next-line-help early due to stale (pre-v4) padding calculations

v4.0.21

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Features

• (derive) long_about and long_help attributes, without a value, force using doc comment (before it wouldn't be set if there wasn't anything different than the short help)

v4.0.20

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Fixes

• (derive) Allow defaulted value parser for '()' fields

v4.0.19

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Features

• ColorChoice now implements ValueEnum

v4.0.18

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Fixes

• (derive) Allow #[command(skip)] to also work with enum variants with a value

v4.0.17

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Fixes

• Allow using Arg::last(true) with Arg::value_hint(ValueHint::CommandWithArguments)

v4.0.16

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Fixes

• Arg::exclusive(true) should not be exclusive with the argument's own ArgGroup

v4.0.15

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Fixes

• (error) Don't suggest -- when it doesn't help
• (error) Be more consistent in quoting, punctuation, and indentation in errors

v4.0.14

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Fixes

• Only put ArgGroup in ArgMatches when explicitly specified, fixing derives handling of option-flattened fields (#​4375)

v4.0.13

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Features

• (derive) Allow () for fields to mean "don't read" (#​4371)

v4.0.12

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Features

• Added TypedValueParser::try_map for when adapting an existing TypedValueParser can fail
• (error) Create errors like clap with Error::new, Error::with_cmd, and Error::insert

v4.0.11

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Fixes

• (help) Fix wrapping calculations with ANSI escape codes

v4.0.10

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Features

• (derive) Support #[arg(flatten)] on Option types (#​4211, #​4350)

v4.0.9

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Fixes

• (derive) Process doc comments for #[command(subcommand)] like in clap v3

v4.0.8

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Fixes

• (derive) Remove a low-value assert preventing defaulting Help and Version actions

v4.0.7

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Features

• (derive) Populate implicit ArgGroup (#​3165)

Fixes

• (derive) Support #[group(skip)] on Parser derive
• (derive) Tell users about implicit arg groups when running into group name conflicts
• (error) Don't report unrelated groups in conflict or requires errors

v4.0.6

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Features

• (derive) Support #[group(skip)] (#​4279, #​4301)

v4.0.5

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v4.0.4

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Fixes

• (error) Specialize the self-conflict error to look like clap v3

v4.0.3

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Fixes

• (parser) When overriding required(true), consider args that conflict with its group

v4.0.2

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v4.0.1

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Features

• ColorChoice now implements ValueEnum