A lot of users expected `color` feature flag and `ColorAuto` etc to
control all colors. Having this extra flag around is easy to miss and
adds to our overall settings bloat, making it harder to find settings
people want.
This completely removes it, rather than make it deprecated like
functions in #2617, because there is extra work to mark things
deprecated as Settings and we should decide on our strategy first before
investing time in addressing that issue.
Fixes#2806
This commit removes `AppSettings::DisableVersionForSubcommand` as it's
now a moot setting with clap's default functionality of not building a
version flag unless there actually exists version information.
`clap_up` must still be changed to remove this variant instead of the
current configuration to simply rename the variant.
This commit adds several debug asserts that ensure the user has not
accidentally generated a version flag that has no information. The
exception to this case is when the user wants to generate a version
flag, but then handle the version display manually. I.e. one can still
generate a "meaningless" version flag, but use
`AppSettings::NoAutoVersion` which is allowed.
Since these tie in closely with the new default behavior of not
auto-generating the `-V/--version` flags when no information has been provided they are now documented.
This commit changes the default behavior of clap to no longer generate a
`-V, --version` flag when no version information has been provided.
Version information can be provided via `App::version`,
`App::long_version`, or via `App::mut_arg("version", |_| ..)`. Using any
of the above is the only way to have clap auto-generate the version flag.
Technically, clap still generates a version flag, however it is removed
prior to parsing if the user has not provided any version information
via one of the mentioned methods.
Relates to [#2812](https://github.com/clap-rs/clap/issues/2812)
* feat(arg_value): ArgValue can be used for possible_values
Through the ArgValue it is possible:
* `hide` possible_values from showing in completion, help and validation
* add `about` to possible_values in completion
* Resolved a few change-requests by epage
* make clippy happy
* add ArgValue::get_visible_value
* remove verbose destructering
* rename ArgValue::get_hidden to ArgValue::is_hidden
* add test for help output of hidden ArgValues
* Documentation for ArgValue
There is an issue that required to implement From<&ArgValue> for
ArgValue. We should probably find a solution without that.
* fix requested changes by epage
* fix formatting
* add deref in possible_values call to remove From<&&str>
* make clippy happy
* use copied() instad of map(|v|*v)
* Finishing up for merge, hopefully
* changes requested by pksunkara
Because we gradually build the `ArgGroup` as we parse the YAML, we don't
use `ArgGroup::new`. Clap3 introduced an internal `id` in addition to
the public `name` and it appears that this custom initialization code
was not updated.
This shows the problem with publically exposing `impl Default`.
Choices:
- Remove `impl Default`
- Always valid
- Requires spreading invariants
- Callers can't implement code the same way we do
- Add `ArgGroup::name`
- Can be constructed in an invalid state
- Centralizes invariants
- A caller could implement code like the yaml logic
I decided to go with `ArgGroup::name`.
Fixes#2719
Before, validating UTF-8 was all-or-nothing and would cause a `panic` if
someone used the right API with non-UTF-8 input.
Now, all arguments are validated for UTF-8, unless opted-out. This
ensures a non-panicing path forward at the cost of people using the
builder API that previously did `value_of_os` need to now set this flag.
Fixes#751
Instead they should behave like `default_value`/`default_values`.
In implementingt this, I didn't see any reason to be using a `VecMap`.
In fact, this helped simplify the code / make intent clearer.
With this, we are also able to simplify the derive macro work from #2633.
Fixes#2634
BREAKING CHANGE: `value_name`/`value_names` always overwrite, rather
than append. We expect the impact to be minimal.
