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Changelog

Unreleased

3.2.0

2021-05-14

Added

  • InputStream.isCliktParameterDefaultStdin and OutputStream.isCliktParameterDefaultStdout to check if the streams returned from inputStream/outputStream options are proxying stdin/stdout (#272)

Changed

  • Make parameters of mutuallyExclusiveOptions covariant to allow validation without explicit type annotations. (#265)
  • Updated kotlin to 1.5.0

Fixed

  • Reading from an option or argument property on a command that hasn't been invoked will now always throw an IllegalStateException

3.1.0

2020-12-12

Added

  • Added required() and defaultLazy() for nullable flag options like switch(). (#240)
  • Added support for generating autocomplete scripts for Fish shells (#189)
  • Added CompletionCommand and CliktCommand.completionOption() that will print an autocomplete script when invoked, as an alternative to using environment variables.

Changed

  • Updated Kotlin to 1.4.21
  • @argfiles now allow line breaks in quoted values, which are included in the value verbatim. You can now end lines with \ to concatenate them with the following line. (#248)

3.0.1

2020-09-03

Deprecated

  • Deprecated calling echo with err or lineSeparator but no message.

3.0.0

2020-09-02

Added

  • Clikt's JS target now supports both NodeJS and Browsers. (#198)
  • Default values for switch options are now shown in the help. Help text can be customized using the defaultForHelp argument, similar to normal options. (#205)
  • Added FlagOption.convert (#208)
  • Added ability to use unicode NEL character (\u0085) to manually break lines in help output (#214)
  • Added help("") extension to options and arguments as an alternative to passing the help as an argument (#207)
  • Added valueSourceKey parameter to option
  • Added check() extensions to options and arguments as an alternative to validate()
  • Added prompt and confirm functions to CliktCommand that call the TermUi equivalents with the current console.
  • Added echo() overload with no parameters to CliktCommand that prints a newline by itself.
  • Added localization support. You can set an implementation of the Localization interface on your context with your translations. (#227)

Fixed

  • Hidden options will no longer be suggested as possible typo corrections. (#202)
  • Options and Arguments with multiple(required=true) will now show as required in help output. (#212)
  • Multiple short lines in a help text paragraph no longer appear dedented (#215)

Changed

  • Updated Kotlin to 1.4.0
  • Argument.help and Option.help properties have been renamed to argumentHelp and optionHelp, respectively. The help parameter names to option() and argument() are unchanged.
  • commandHelp and commandHelpEpilog properties on CliktCommand are now open, so you can choose to override them instead of passing help and epilog to the constructor.
  • Replaced MapValueSource.defaultKey with ValueSource.getKey(), which is more customizable.
  • Option.metavar, Option.parameterHelp, OptionGroup.parameterHelp and Argument.parameterHelp properties are now functions.
  • Changed constructor parameters of CliktHelpFormatter. Added localization and removed usageTitle, optionsTitle, argumentsTitle, commandsTitle, optionsMetavar, and commandMetavar. Those strings are now defined on equivalently named functions on Localization.

Removed

  • Removed envvarSplit parameter from option() and convert(). Option values from environment variables are no longer split automatically. (#177)
  • Removed public constructors from the following classes: ProcessedArgument, OptionWithValues, FlagOption, CoOccurringOptionGroup, ChoiceGroup, MutuallyExclusiveOptions.
  • MissingParameter exception replaced with MissingOption and MissingArgument
  • Removed Context.helpOptionMessage. Override Localization.helpOptionMessage and set it on your context instead.

Deprecated

  • @ExperimentalCompletionCandidates and @ExperimentalValueSourceApi annotations. These APIs no longer require an opt-in.

2.8.0

2020-06-19

Added

  • Added error parameter to PrintMessage and PrintHelpMessage. When true, CliktCommand.main will exit with status code 1. (#187)

Changed

  • When printHelpOnEmptyArgs is true and no arguments are present, or when invokeWithoutSubcommand is false and no subcommand is present, CliktCommand.main will now exit with status code 1 rather than 0.
  • restrictTo now works with any Comparable value, not just Number.
  • CliktCommand.main now accepts Array<out String>, not just Array<String>. (#196)

Fixed

  • Fixed option values being reset when calling multiple subcommands with allowMultipleSubcommands=true (#190)

2.7.1

2020-05-19

Fixed

  • Fixed NPE thrown in some cases when using defaultByName (#179)

2.7.0

2020-05-13

Added

  • Ability to use custom program exit status codes via ProgramResult.
  • inputStream and outputStream conversions for options and arguments. (#157 and #159)
  • splitPair, toMap, and associate extensions on option. (#166)
  • treatUnknownOptionsAsArgs parameter to CliktCommand. (#152)
  • defaultByName function for groupChoice and groupSwitch options. (#171)

Changed

  • Update Kotlin to 1.3.71
  • Improved command name inference. Now, a class like MyAppCommand will infer its commandName as my-app rather than myappcommand. You can still specify the name manually as before. ([#168][ajalt#168])

Fixed

  • Correctly parse short options with attached values that contain =

2.6.0

2020-03-15

Added

  • registeredSubcommands, registeredOptions, registeredArguments, and registeredParameterGroups methods on CliktCommand.
  • Ability to read default option values from configuration files and other sources. Support for Java property files is built in on JVM, see the json sample for an example of reading from other formats.
  • allowMultipleSubcommands parameter to CliktCommand that allows you to pass multiple subcommands in the same call. (docs)
  • Errors from typos in subcommand names will now include suggested corrections. Corrections for options and subcommands are now based on a Jaro-Winkler similarity metric, and can be customized with Context.correctionSuggestor

Changed

  • Update Kotlin to 1.3.70
  • convert can be called more than once on the same option or argument, including after calls to conversion functions like int and file.
  • CliktCommand.toString now includes the class name
  • Reverted automatic ~ expansion in file() and path() introduced in 2.5.0. If you need this behavior, you can implement it with code like convert { /* expand tidle */ }.file()

Deprecated

  • wrapValue is now deprecated, since convert can be used in its place instead.

2.5.0

2020-02-22

Added

  • Clikt is now available as a Kotlin Multiplatform Project, supporting JVM, NodeJS, and native Windows, Linux, and macOS.
  • eagerOption {} function to more easily register eager options.
  • Eager options can now be added to option groups in help out by passing a value for groupName when creating them.
  • canBeSymlink parameter to file() and path() conversions that can be used to disallow symlinks
  • CliktCommand.eagerOption to simplify creating custom eager options

Changed

  • The parameter names of file() and path() conversions have changed. The existing names are deprecated, and can be converted to the new usages with an IntelliJ inspection. Note that if you are calling these functions with unnamed arguments (e.g. file(true, false)), you'll need to add argument names in order to remove the deprecation warning.

Deprecated

  • The CliktCommand.context property has been deprecated in favor of the new name, currentContext, to avoid confusion with the CliktCommand.context{} method.
  • NoRunCliktCommand was renamed to NoOpCliktCommand. The existing class is deprecated. (#130)

Fixed

  • file() and path() conversions will now properly expand leading ~ in paths to the home directory for mustExist, canBeFile, and canBeDir checks. The property value is unchanged, and can still begin with a ~. (#131)

2.4.0

2020-01-25

Added

  • CompletionCandidates.Fixed now has a secondary convenience constructor that take a vararg of Strings
  • CompletionCadidates.Custom, which allows you to call other binaries or write a script to generate completions. This class is currently experimental. (#79)
  • Option.wrapValue and Argument.wrapValue to make it easier to reuse existing conversion functions.
  • ignoreCase parameter to choice() and enum() conversion functions.

Changed

  • option() and argument() now take optional completionCandidates parameters to override how completion is generated. The constructor and copy functions of OptionsWithValues and ProcessedArgument have changed to support default values.
  • The overloads of findObject (1 2) that take a default value have been renamed findOrSetObject. The existing names are marked with @Deprecated, and IntelliJ can convert your callsites automatically. (#110)
  • enum() parameters now accept case-insensitive values by default. You change this behavior by passing ignoreCase = false to enum() (#115)

Fixed

  • groupChoice help output now includes the choices in the help output metavar
  • TermUi.edit* functions could freeze on certain editors (#99, thanks @iampravikant and @sebokopter)
  • Shell completion can now handle command names with dashes. (#104)
  • Arguments with = in them could be incorrectly interpreted as options (#106)

2.3.0

2019-11-07

Added

  • option().groupSwitch(), which works like groupChoice(), but uses a switch() option rather than a choice() option.
  • UsageError now has a statusCode parameter (which defaults to 1). If you're using ClicktCommand.main, the value of statusCode will be passed to exitProcess.

Changed

  • Shell completion code is now printed by throwing a PrintCompletionMessage (a subclass of PrintMessage) rather than calling echo directly.

2.2.0

2019-09-25

Added

Changed

Fixed

  • Help output missing items when no help text is specified. (#85)
  • Help output not grouping options in groups passed to groupChoice. (#88)

2.1.0

2019-05-23

Added

  • Ability to prevent rewrapping individual paragraphs in help output.
  • Added parameter required to Option.multiple() to require at least one instance of the option on the command line.

Changed

  • CliktCommand.toString() now includes the names and values of all parameters and subcommands.

Fixed

  • Create subcommand context when helpOptionNames is empty. (#64)

2.0.0

2019-05-12

Added

Changed

  • If multiple -- tokens are present on the command line, all subsequent occurrences after the first are now parsed as positional arguments. Previously, subsequent -- tokens were skipped.
  • The PlaintextHelpFormatter has been replaced with CliktHelpFormatter, which is more customizable. See the docs for more info, or the new sample for an example of customizing help output to use ANSI colors.
  • Some of the properties and constructor parameters for OptionWithValues and ProcessedArgument have changed.
  • The OptionDelegate interface has changed, and GroupableOption and ParameterHolder interfaces have been added to work with option groups.
  • Parameter validation now occurs after all parameter delegates have set their values, so the lambdas passed to validate may reference other parameters.

1.7.0

2019-03-23

Added

  • printHelpOnEmptyArgs parameter to CliktCommand constructor. (#41)

Fixed

  • Usage errors now correctly print subcommand names. (#47)
  • Arguments with multiple(required=true) now report an error if no argument is given on the command line. (#36)

1.6.0

2018-12-02

Added

  • .multiple().unique() modifier for options and arguments.

Fixed

  • Support multi-line input when redirecting stdin

1.5.0

2018-08-26

Added

  • Ability to use alternate output streams rather than stdin and stdout by setting Context.console or by passing a console to TermUI functions.

1.4.0

2018-07-31

Added

  • path() type for parameter values

Changed

  • Clikt now targets JVM 8 bytecode
  • Responses to TermUi.confirm() are now case-insensitive

1.3.0

2018-06-23

Added

  • defaultLazy extension for options and arguments

Changed

  • main now prints messages to stderr instead of stdout

Fixed

  • Parameter help messages are now wrapped more consistently

1.2.0

2018-05-07

Added

  • Default parameter to option().default()

Changed

  • Treat tokens with unknown prefixes as arguments (this makes it easier to pass in file paths without using --).

1.1.0

2018-04-15

Added

  • List<String> overloads to CliktCommand.parse and main
  • err parameter to TermUi.echo
  • error property to Abort