fix(parser): Deprecate args_override_self

This shouldn't be needed anymore now that this is effectively the new
behavior for the non-deprecated actions.

This was briefly talked about in
https://github.com/clap-rs/clap/discussions/2627 but I wasn't familiar
enough with the implementation to know how safe it is.  Now, maintainrs
and users can be more confident because they are explicitly opting into
it.

See also #3795

examples/tutorial_builder/02_app_settings.rs

@@ -1,14 +1,13 @@
 // Note: this requires the `cargo` feature
 
-use clap::{arg, command, AppSettings};
+use clap::{arg, command, AppSettings, ArgAction};
 
 fn main() {
     let matches = command!()
-        .args_override_self(true)
         .global_setting(AppSettings::DeriveDisplayOrder)
         .allow_negative_numbers(true)
-        .arg(arg!(--two <VALUE>))
-        .arg(arg!(--one <VALUE>))
+        .arg(arg!(--two <VALUE>).action(ArgAction::Set))
+        .arg(arg!(--one <VALUE>).action(ArgAction::Set))
         .get_matches();
 
     println!(

examples/tutorial_derive/02_app_settings.rs

@@ -2,7 +2,6 @@ use clap::{AppSettings, Parser};
 
 #[derive(Parser)]
 #[clap(author, version, about, long_about = None)]
-#[clap(args_override_self = true)]
 #[clap(allow_negative_numbers = true)]
 #[clap(global_setting(AppSettings::DeriveDisplayOrder))]
 struct Cli {

src/builder/command.rs

@@ -910,17 +910,8 @@ impl<'help> App<'help> {
         }
     }
 
-    /// Specifies that all arguments override themselves.
-    ///
-    /// This is the equivalent to saying the `foo` arg using [`Arg::overrides_with("foo")`] for all
-    /// defined arguments.
-    ///
-    /// **NOTE:** This will not be applied when [`Arg::multiple_occurrences(true)`].
-    ///
-    /// **NOTE:** This choice is propagated to all child subcommands.
-    ///
-    /// [`Arg::overrides_with("foo")`]: crate::Arg::overrides_with()
-    #[inline]
+    /// Deprecated, replaced with [`ArgAction::Set`][super::ArgAction::Set]
+    #[deprecated(since = "3.2.0", note = "Replaced with `Arg::action(ArgAction::Set)`")]
     pub fn args_override_self(self, yes: bool) -> Self {
         if yes {
             self.global_setting(AppSettings::AllArgsOverrideSelf)

tests/builder/app_settings.rs

@@ -1064,6 +1064,7 @@ fn built_in_subcommand_escaped() {
 
 #[test]
 fn aaos_flags() {
+    #![allow(deprecated)]
     // flags
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1077,6 +1078,7 @@ fn aaos_flags() {
 
 #[test]
 fn aaos_flags_mult() {
+    #![allow(deprecated)]
     // flags with multiple
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1090,6 +1092,7 @@ fn aaos_flags_mult() {
 
 #[test]
 fn aaos_opts() {
+    #![allow(deprecated)]
     // opts
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1107,6 +1110,7 @@ fn aaos_opts() {
 
 #[test]
 fn aaos_opts_w_other_overrides() {
+    #![allow(deprecated)]
     // opts with other overrides
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1130,6 +1134,7 @@ fn aaos_opts_w_other_overrides() {
 
 #[test]
 fn aaos_opts_w_other_overrides_rev() {
+    #![allow(deprecated)]
     // opts with other overrides, rev
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1152,6 +1157,7 @@ fn aaos_opts_w_other_overrides_rev() {
 
 #[test]
 fn aaos_opts_w_other_overrides_2() {
+    #![allow(deprecated)]
     // opts with other overrides
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1175,6 +1181,7 @@ fn aaos_opts_w_other_overrides_2() {
 
 #[test]
 fn aaos_opts_w_other_overrides_rev_2() {
+    #![allow(deprecated)]
     // opts with other overrides, rev
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1197,6 +1204,7 @@ fn aaos_opts_w_other_overrides_rev_2() {
 
 #[test]
 fn aaos_opts_w_override_as_conflict_1() {
+    #![allow(deprecated)]
     // opts with other overrides, rev
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1216,6 +1224,7 @@ fn aaos_opts_w_override_as_conflict_1() {
 
 #[test]
 fn aaos_opts_w_override_as_conflict_2() {
+    #![allow(deprecated)]
     // opts with other overrides, rev
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1238,6 +1247,7 @@ fn aaos_opts_w_override_as_conflict_2() {
 
 #[test]
 fn aaos_opts_mult() {
+    #![allow(deprecated)]
     // opts with multiple
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1264,6 +1274,7 @@ fn aaos_opts_mult() {
 
 #[test]
 fn aaos_opts_mult_req_delims() {
+    #![allow(deprecated)]
     // opts with multiple and require delims
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1293,6 +1304,7 @@ fn aaos_opts_mult_req_delims() {
 
 #[test]
 fn aaos_pos_mult() {
+    #![allow(deprecated)]
     // opts with multiple
     let res = Command::new("posix")
         .args_override_self(true)
@@ -1313,6 +1325,7 @@ fn aaos_pos_mult() {
 
 #[test]
 fn aaos_option_use_delim_false() {
+    #![allow(deprecated)]
     let m = Command::new("posix")
         .args_override_self(true)
         .arg(arg!(--opt <val> "some option").use_value_delimiter(false))

tests/builder/grouped_values.rs

@@ -1,6 +1,6 @@
 #![cfg(feature = "unstable-grouped")]
 
-use clap::{Arg, Command};
+use clap::{Arg, ArgAction, Command};
 
 #[test]
 fn grouped_value_works() {
@@ -251,7 +251,8 @@ fn issue_1374() {
 }
 
 #[test]
-fn issue_2171() {
+fn issue_2171_deprecated() {
+    #![allow(deprecated)]
     let schema = Command::new("ripgrep#1701 reproducer")
         .args_override_self(true)
         .arg(Arg::new("pretty").short('p').long("pretty"))
@@ -271,3 +272,34 @@ fn issue_2171() {
         let _ = schema.clone().try_get_matches_from(argv).unwrap();
     }
 }
+
+#[test]
+fn issue_2171() {
+    let schema = Command::new("ripgrep#1701 reproducer")
+        .arg(
+            Arg::new("pretty")
+                .short('p')
+                .long("pretty")
+                .action(ArgAction::SetTrue),
+        )
+        .arg(
+            Arg::new("search_zip")
+                .short('z')
+                .long("search-zip")
+                .action(ArgAction::SetTrue),
+        );
+
+    let test_args = &[
+        vec!["reproducer", "-pz", "-p"],
+        vec!["reproducer", "-pzp"],
+        vec!["reproducer", "-zpp"],
+        vec!["reproducer", "-pp", "-z"],
+        vec!["reproducer", "-p", "-p", "-z"],
+        vec!["reproducer", "-p", "-pz"],
+        vec!["reproducer", "-ppz"],
+    ];
+
+    for argv in test_args {
+        let _ = schema.clone().try_get_matches_from(argv).unwrap();
+    }
+}