add 0 support

src/command.rs

@@ -46,7 +46,7 @@ impl Env {
 }
 
 pub type Args<'a, 'b> = &'b [String];
-trait Run = Fn(Args, &mut Env);
+trait Run = Fn(Args, &mut Env) -> i32;
 type Cmd = Box<dyn Run>;
 
 pub struct Command {
@@ -69,7 +69,8 @@ impl Command {
 
     pub fn call(&self, words: Args, env: &mut Env) {
         let x = &self.cmd;
-        x(words, env)
+        let exit_code = x(words, env);
+        env.set("?", &exit_code.to_string());
     }
 
     pub fn choose<'a>(text: &str, choices: &'a [Self]) -> Option<&'a Self> {
@@ -125,10 +126,6 @@ impl Command {
                                         .envs(env.as_env())
                                         .output()
                                         .expect("Failed to call external program");
-                                    // TODO load into env
-                                    if let Some(status) = out.status.code() {
-                                        env.set("?", &status.to_string());
-                                    }
                                     if !out.stdout.is_empty() {
                                         let output = String::from_utf8_lossy(&out.stdout);
                                         println!("{output}");
@@ -137,6 +134,7 @@ impl Command {
                                         let errout = String::from_utf8_lossy(&out.stderr);
                                         println!("{errout}");
                                     }
+                                    out.status.code().unwrap_or(0)
                                 }),
                             );
                             v.push(cmd);
@@ -171,6 +169,7 @@ impl Command {
                         .intersperse(" ".to_string())
                         .collect::<String>();
                     println!("{msg}");
+                    0
                 }),
             ),
             Command::init(
@@ -182,6 +181,7 @@ impl Command {
                         Box::new(|_, _| {
                             // how do you know it's not random?
                             println!("8");
+                            0
                         }),
                     ),
                     Command::init(
@@ -190,11 +190,13 @@ impl Command {
                         Box::new(|_, _| {
                             // how do you know it's not random?
                             println!("hello world");
+                            0
                         }),
                     ),
                 ],
                 Box::new(|args, _| {
                     println!("random's debug: {:?}", args);
+                    0
                 }),
             ),
         ];

src/main.rs

@@ -16,6 +16,7 @@ fn main() {
     
     let mut env= Env::new();
     env.set("HOME", "/a/fake/dir");
+    env.set("?", "0");
 
     let commands = &Command::all_commands(&env);
     println!("Loaded {} commands", commands.len());