windows: Fix auto update failure when launching from the cli (#34303)

Release Notes:

- N/A

---------

Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/auto_update_helper/src/auto_update_helper.rs

@@ -37,6 +37,11 @@ mod windows_impl {
     pub(crate) const WM_JOB_UPDATED: u32 = WM_USER + 1;
     pub(crate) const WM_TERMINATE: u32 = WM_USER + 2;
 
+    #[derive(Debug)]
+    struct Args {
+        launch: Option<bool>,
+    }
+
     pub(crate) fn run() -> Result<()> {
         let helper_dir = std::env::current_exe()?
             .parent()
@@ -51,8 +56,9 @@ mod windows_impl {
         log::info!("======= Starting Zed update =======");
         let (tx, rx) = std::sync::mpsc::channel();
         let hwnd = create_dialog_window(rx)?.0 as isize;
+        let args = parse_args();
         std::thread::spawn(move || {
-            let result = perform_update(app_dir.as_path(), Some(hwnd));
+            let result = perform_update(app_dir.as_path(), Some(hwnd), args.launch.unwrap_or(true));
             tx.send(result).ok();
             unsafe { PostMessageW(Some(HWND(hwnd as _)), WM_TERMINATE, WPARAM(0), LPARAM(0)) }.ok();
         });
@@ -77,6 +83,41 @@ mod windows_impl {
         Ok(())
     }
 
+    fn parse_args() -> Args {
+        let mut result = Args { launch: None };
+        if let Some(candidate) = std::env::args().nth(1) {
+            parse_single_arg(&candidate, &mut result);
+        }
+
+        result
+    }
+
+    fn parse_single_arg(arg: &str, result: &mut Args) {
+        let Some((key, value)) = arg.strip_prefix("--").and_then(|arg| arg.split_once('=')) else {
+            log::error!(
+                "Invalid argument format: '{}'. Expected format: --key=value",
+                arg
+            );
+            return;
+        };
+
+        match key {
+            "launch" => parse_launch_arg(value, &mut result.launch),
+            _ => log::error!("Unknown argument: --{}", key),
+        }
+    }
+
+    fn parse_launch_arg(value: &str, arg: &mut Option<bool>) {
+        match value {
+            "true" => *arg = Some(true),
+            "false" => *arg = Some(false),
+            _ => log::error!(
+                "Invalid value for --launch: '{}'. Expected 'true' or 'false'",
+                value
+            ),
+        }
+    }
+
     pub(crate) fn show_error(mut content: String) {
         if content.len() > 600 {
             content.truncate(600);
@@ -91,4 +132,47 @@ mod windows_impl {
             )
         };
     }
+
+    #[cfg(test)]
+    mod tests {
+        use crate::windows_impl::{Args, parse_launch_arg, parse_single_arg};
+
+        #[test]
+        fn test_parse_launch_arg() {
+            let mut arg = None;
+            parse_launch_arg("true", &mut arg);
+            assert_eq!(arg, Some(true));
+
+            let mut arg = None;
+            parse_launch_arg("false", &mut arg);
+            assert_eq!(arg, Some(false));
+
+            let mut arg = None;
+            parse_launch_arg("invalid", &mut arg);
+            assert_eq!(arg, None);
+        }
+
+        #[test]
+        fn test_parse_single_arg() {
+            let mut args = Args { launch: None };
+            parse_single_arg("--launch=true", &mut args);
+            assert_eq!(args.launch, Some(true));
+
+            let mut args = Args { launch: None };
+            parse_single_arg("--launch=false", &mut args);
+            assert_eq!(args.launch, Some(false));
+
+            let mut args = Args { launch: None };
+            parse_single_arg("--launch=invalid", &mut args);
+            assert_eq!(args.launch, None);
+
+            let mut args = Args { launch: None };
+            parse_single_arg("--launch", &mut args);
+            assert_eq!(args.launch, None);
+
+            let mut args = Args { launch: None };
+            parse_single_arg("--unknown", &mut args);
+            assert_eq!(args.launch, None);
+        }
+    }
 }