fix(parser)!: Store args in a group, rather than values

CHANGELOG.md

@@ -40,6 +40,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   built-in flags and be copied to all subcommands, instead disable
   the built-in flags (`Command::disable_help_flag`,
   `Command::disable_version_flag`) and mark the custom flags as `global(true)`.
+- Looking up a group in `ArgMatches` now returns the arg `Id`s, rather than the values.
+- Various `Arg`, `Command`, and `ArgGroup` calls were switched from accepting `&[]` to `[]` via `IntoIterator`
 - *(help)* Make `DeriveDisplayOrder` the default and removed the setting.  To sort help, set `next_display_order(None)` (#2808)
 - *(help)* Subcommand display order respects `Command::next_display_order` instead of `DeriveDisplayOrder` and using its own initial display order value (#2808)
 - *(env)* Parse `--help` and `--version` like any `ArgAction::SetTrue` flag (#3776)

clap_bench/benches/05_ripgrep.rs

@@ -316,7 +316,7 @@ where
         .arg(flag("help"))
         .arg(flag("version").short('V'))
         // First, set up primary positional/flag arguments.
-        .arg(arg("pattern").required_unless_present_any(&[
+        .arg(arg("pattern").required_unless_present_any([
             "file",
             "files",
             "help-short",
@@ -337,9 +337,9 @@ where
             flag("files")
                 // This should also conflict with `pattern`, but the first file
                 // path will actually be in `pattern`.
-                .conflicts_with_all(&["file", "regexp", "type-list"]),
+                .conflicts_with_all(["file", "regexp", "type-list"]),
         )
-        .arg(flag("type-list").conflicts_with_all(&["file", "files", "pattern", "regexp"]))
+        .arg(flag("type-list").conflicts_with_all(["file", "files", "pattern", "regexp"]))
         // Second, set up common flags.
         .arg(flag("text").short('a'))
         .arg(flag("count").short('c'))

clap_bench/benches/06_rustup.rs

@@ -263,7 +263,7 @@ fn build_cli() -> Command<'static> {
                         .action(ArgAction::SetTrue)
                         .help("Standard library API documentation"),
                 )
-                .group(ArgGroup::new("page").args(&["book", "std"])),
+                .group(ArgGroup::new("page").args(["book", "std"])),
         )
         .subcommand(
             Command::new("man")

clap_mangen/src/render.rs

@@ -63,7 +63,7 @@ pub(crate) fn synopsis(roff: &mut Roff, cmd: &clap::Command) {
         if let Some(value) = arg.get_value_names() {
             line.push(italic(value.join(" ")));
         } else {
-            line.push(italic(arg.get_id()));
+            line.push(italic(arg.get_id().as_str()));
         }
         line.push(roman(rhs));
         line.push(roman(" "));
@@ -129,7 +129,7 @@ pub(crate) fn options(roff: &mut Roff, cmd: &clap::Command) {
         if let Some(value) = pos.get_value_names() {
             header.push(italic(value.join(" ")));
         } else {
-            header.push(italic(pos.get_id()));
+            header.push(italic(pos.get_id().as_str()));
         };
         header.push(roman(rhs));
 

examples/tutorial_builder/04_03_relations.rs

@@ -14,7 +14,7 @@ fn main() {
         .group(
             ArgGroup::new("vers")
                 .required(true)
-                .args(&["set-ver", "major", "minor", "patch"]),
+                .args(["set-ver", "major", "minor", "patch"]),
         )
         // Arguments can also be added to a group individually, these two arguments
         // are part of the "input" group which is not required

examples/tutorial_derive/04_03_relations.rs

@@ -5,7 +5,7 @@ use clap::{ArgGroup, Parser};
 #[clap(group(
             ArgGroup::new("vers")
                 .required(true)
-                .args(&["set_ver", "major", "minor", "patch"]),
+                .args(["set_ver", "major", "minor", "patch"]),
         ))]
 struct Cli {
     /// set version manually