fix(nu): Set argument type based on ValueHint

- Modified `append_value_completion_and_help` to set argument type to
  `path` for `ValueHint::AnyPath`, `ValueHint::FilePath`, and
  `ValueHint::DirPath`, and to `string` for other `ValueHint`s.
- Updated test snapshots to reflect the changes in argument types.

Author: gifnksm

clap_complete_nushell/src/lib.rs

@@ -23,6 +23,7 @@
 #![warn(clippy::print_stdout)]
 
 use clap::builder::StyledStr;
+use clap::ValueHint;
 use clap::{builder::PossibleValue, Arg, ArgAction, Command};
 use clap_complete::Generator;
 
@@ -65,7 +66,23 @@ fn append_value_completion_and_help(
         .unwrap_or(false);
 
     if takes_values {
-        s.push_str(": string");
+        let nu_type = match arg.get_value_hint() {
+            ValueHint::Unknown => "string",
+            ValueHint::Other => "string",
+            ValueHint::AnyPath => "path",
+            ValueHint::FilePath => "path",
+            ValueHint::DirPath => "path",
+            ValueHint::ExecutablePath => "path",
+            ValueHint::CommandName => "string",
+            ValueHint::CommandString => "string",
+            ValueHint::CommandWithArguments => "string",
+            ValueHint::Username => "string",
+            ValueHint::Hostname => "string",
+            ValueHint::Url => "string",
+            ValueHint::EmailAddress => "string",
+            _ => "string",
+        };
+        s.push_str(format!(": {nu_type}").as_str());
 
         if !possible_values.is_empty() {
             s.push_str(format!(r#"@"nu-complete {} {}""#, name, arg.get_id()).as_str());

clap_complete_nushell/tests/snapshots/feature_sample.nu

@@ -6,7 +6,7 @@ module completions {
 
   # Tests completions
   export extern my-app [
-    file?: string             # some input file
+    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

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

@@ -178,10 +178,10 @@ module completions {
     --choice: string@"nu-complete test hint choice"
     --unknown: string
     --other: string
-    --path(-p): string
-    --file(-f): string
-    --dir(-d): string
-    --exe(-e): string
+    --path(-p): path
+    --file(-f): path
+    --dir(-d): path
+    --exe(-e): path
     --cmd-name: string
     --cmd(-c): string
     command_with_args?: string

clap_complete_nushell/tests/snapshots/special_commands.nu

@@ -6,7 +6,7 @@ module completions {
 
   # Tests completions
   export extern my-app [
-    file?: string             # some input file
+    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

clap_complete_nushell/tests/snapshots/sub_subcommands.nu

@@ -6,7 +6,7 @@ module completions {
 
   # Tests completions
   export extern my-app [
-    file?: string             # some input file
+    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

clap_complete_nushell/tests/snapshots/value_hint.nu

@@ -8,10 +8,10 @@ module completions {
     --choice: string@"nu-complete my-app choice"
     --unknown: string
     --other: string
-    --path(-p): string
-    --file(-f): string
-    --dir(-d): string
-    --exe(-e): string
+    --path(-p): path
+    --file(-f): path
+    --dir(-d): path
+    --exe(-e): path
     --cmd-name: string
     --cmd(-c): string
     command_with_args?: string