fix(clap_complete_nushell): order positional arguments by index

clap_complete_nushell/src/lib.rs

@@ -219,7 +219,16 @@ fn generate_completion(completions: &mut String, cmd: &Command, is_subcommand: b
         completions.push_str(format!("  export extern {name} [\n").as_str());
     }
 
-    for arg in cmd.get_arguments() {
+    let flags: Vec<_> = cmd.get_arguments().filter(|a| !a.is_positional()).collect();
+    let mut positionals: Vec<_> = cmd.get_positionals().collect();
+
+    positionals.sort_by_key(|arg| arg.get_index());
+
+    for arg in flags {
+        append_argument(arg, name, completions);
+    }
+
+    for arg in positionals {
         append_argument(arg, name, completions);
     }
 

clap_complete_nushell/tests/common.rs

@@ -168,6 +168,29 @@ pub(crate) fn sub_subcommands_command(name: &'static str) -> Command {
     )
 }
 
+pub(crate) fn positional_index_command(name: &'static str) -> Command {
+    Command::new(name)
+        .version("3.0")
+        .about("Tests positional argument index ordering")
+        .arg(
+            Arg::new("flag")
+                .short('f')
+                .long("flag")
+                .action(ArgAction::SetTrue)
+                .help("some flag"),
+        )
+        .arg(Arg::new("third").index(3).help("third positional"))
+        .arg(Arg::new("first").index(1).help("first positional"))
+        .arg(
+            Arg::new("option")
+                .short('o')
+                .long("option")
+                .action(ArgAction::Set)
+                .help("some option"),
+        )
+        .arg(Arg::new("second").index(2).help("second positional"))
+}
+
 pub(crate) fn value_hint_command(name: &'static str) -> Command {
     Command::new(name)
         .arg(

clap_complete_nushell/tests/nushell.rs

@@ -83,3 +83,15 @@ fn value_hint() {
         name,
     );
 }
+
+#[test]
+fn positional_index() {
+    let name = "my-app";
+    let cmd = common::positional_index_command(name);
+    common::assert_matches(
+        snapbox::file!["snapshots/positional_index.nu"],
+        clap_complete_nushell::Nushell,
+        cmd,
+        name,
+    );
+}

clap_complete_nushell/tests/snapshots/aliases.nu

@@ -8,9 +8,9 @@ module completions {
     --option(-o): string      # cmd option
     --opt: string             # cmd option
     -O: string                # cmd option
-    positional?: string
     --help(-h)                # Print help
     --version(-V)             # Print version
+    positional?: string
   ]
 
 }

clap_complete_nushell/tests/snapshots/feature_sample.nu

@@ -6,13 +6,13 @@ module completions {
 
   # Tests completions
   export extern my-app [
-    file?: path               # some input file
     --config(-c)              # some config file with another line
     --conf                    # some config file with another line
     -C                        # some config file with another line
-    choice?: string@"nu-complete my-app choice"
     --help(-h)                # Print help
     --version(-V)             # Print version
+    file?: path               # some input file
+    choice?: string@"nu-complete my-app choice"
   ]
 
   # tests things

clap_complete_nushell/tests/snapshots/home/static/test/nu/.config/nushell/completions/test.nu

@@ -111,10 +111,10 @@ module completions {
     --delim: string
     --tuple: string
     --require-eq: string
-    ...term: string
     --global                  # everywhere
     --help(-h)                # Print help
     --version(-V)             # Print version
+    ...term: string
   ]
 
   export extern "test pacman" [
@@ -150,11 +150,11 @@ module completions {
   ]
 
   export extern "test last" [
-    first?: string
-    free?: string
     --global                  # everywhere
     --help(-h)                # Print help
     --version(-V)             # Print version
+    first?: string
+    free?: string
   ]
 
   export extern "test alias" [
@@ -164,10 +164,10 @@ module completions {
     --option(-o): string      # cmd option
     --opt: string             # cmd option
     -O: string                # cmd option
-    positional?: string
     --global                  # everywhere
     --help(-h)                # Print help
     --version(-V)             # Print version
+    positional?: string
   ]
 
   def "nu-complete test hint choice" [] {
@@ -184,14 +184,14 @@ module completions {
     --exe(-e): path
     --cmd-name: string
     --cmd(-c): string
-    command_with_args?: string
     --user(-u): string
     --host(-H): string
     --url: string
     --email: string
     --global                  # everywhere
     --help(-h)                # Print help
     --version(-V)             # Print version
+    command_with_args?: string
   ]
 
   # Print this message or the help of the given subcommand(s)

clap_complete_nushell/tests/snapshots/positional_index.nu

@@ -0,0 +1,16 @@
+module completions {
+
+  # Tests positional argument index ordering
+  export extern my-app [
+    --flag(-f)                # some flag
+    --option(-o): string      # some option
+    --help(-h)                # Print help
+    --version(-V)             # Print version
+    first?: string            # first positional
+    second?: string           # second positional
+    third?: string            # third positional
+  ]
+
+}
+
+export use completions *

clap_complete_nushell/tests/snapshots/special_commands.nu

@@ -6,13 +6,13 @@ module completions {
 
   # Tests completions
   export extern my-app [
-    file?: path               # some input file
     --config(-c)              # some config file with another line
     --conf                    # some config file with another line
     -C                        # some config file with another line
-    choice?: string@"nu-complete my-app choice"
     --help(-h)                # Print help
     --version(-V)             # Print version
+    file?: path               # some input file
+    choice?: string@"nu-complete my-app choice"
   ]
 
   # tests things
@@ -25,9 +25,9 @@ module completions {
   # tests other things
   export extern "my-app some_cmd" [
     --config: string          # the other case to test
-    ...path: string
     --help(-h)                # Print help
     --version(-V)             # Print version
+    ...path: string
   ]
 
   export extern "my-app some-cmd-with-hyphens" [

clap_complete_nushell/tests/snapshots/sub_subcommands.nu

@@ -6,13 +6,13 @@ module completions {
 
   # Tests completions
   export extern my-app [
-    file?: path               # some input file
     --config(-c)              # some config file with another line
     --conf                    # some config file with another line
     -C                        # some config file with another line
-    choice?: string@"nu-complete my-app choice"
     --help(-h)                # Print help
     --version(-V)             # Print version
+    file?: path               # some input file
+    choice?: string@"nu-complete my-app choice"
   ]
 
   # tests things

clap_complete_nushell/tests/snapshots/value_hint.nu

@@ -14,12 +14,12 @@ module completions {
     --exe(-e): path
     --cmd-name: string
     --cmd(-c): string
-    command_with_args?: string
     --user(-u): string
     --host(-H): string
     --url: string
     --email: string
     --help(-h)                # Print help
+    command_with_args?: string
   ]
 
 }