McMaster.Extensions.Hosting.CommandLine 2.3.0-beta

• .NETStandard 2.0

  • McMaster.Extensions.CommandLineUtils (>= 2.3.0-beta)
  • Microsoft.Extensions.Hosting (>= 2.1.0)

Enhancements:

* Support the POSIX convention for cluster multiple options. For example, `-ixd` is treated the same as `-i -x -d`.

* @bjorg: support SingleOrNoValue notation. `--option[:value]`

* New type: `Pager`. Provides a simple interaction model for displaying console output in a pager.

* Display help text using the `less` pager on macOS/Linux.

* Make suggestions when invalid options or commands are used, but there is a valid one that is similar.
 (Thanks to @MadbHatter for doing the initial work on this.)

* Add support for subcommand aliases. Commands can be given multiple names.
 ```c#
 [Command("organization", "org", "o")]
 public class OrgCommand { }
 ```

* Obsolete the constructor of `[Subcommand]` which takes a string.

* Infer subcommand names from the type name
 ```c#
 [Subcommand(typeof(AddCommand))]
 public class Git { }

 public class AddCommand { } // subcommand name = "add"
 ```

* @lvermeulen: Sort subcommands by name in help text. This can be disabled with `DefaultHelpTextGenerator.SortCommandsByName`.

* @jcaillon: Add API for `UnrecognizedCommandParsingException` which includes suggestions for similar options or commands.

Bugs fixed:

* Duplicate subcommand names used to cause undefined behavior. Now, attempting to add a duplicate subcommand name or aliases will
 cause the library to throw before the app can execute.

* Fix bug in subcommand name inference. When not specified, the subcommand always matched the entry assembly name.
 In this update, this convention only applies to the parent command.

* Add generic overloads of `.IsRequired()` for `CommandOption<T>` and `CommandArgument<T>`.

* @handcraftedsource: handled nested HelpOptions (fixes #86 - InvalidOperationException when multiple help options were defined)


See more details here: https://github.com/natemcmaster/CommandLineUtils/blob/master/CHANGELOG.md#v230