Implement open in terminal

src/spawn_detached.rs

@@ -0,0 +1,37 @@
+use std::{io, process};
+
+// This code is from the open crate and retains its MIT license.
+pub fn spawn_detached(command: &mut process::Command) -> io::Result<()> {
+    command
+        .stdin(process::Stdio::null())
+        .stdout(process::Stdio::null())
+        .stderr(process::Stdio::null());
+
+    #[cfg(unix)]
+    unsafe {
+        use std::os::unix::process::CommandExt as _;
+
+        command.pre_exec(move || {
+            match libc::fork() {
+                -1 => return Err(io::Error::last_os_error()),
+                0 => (),
+                _ => libc::_exit(0),
+            }
+
+            if libc::setsid() == -1 {
+                return Err(io::Error::last_os_error());
+            }
+
+            Ok(())
+        });
+    }
+    #[cfg(windows)]
+    {
+        use std::os::windows::process::CommandExt;
+        const CREATE_NEW_PROCESS_GROUP: u32 = 0x00000200;
+        const CREATE_NO_WINDOW: u32 = 0x08000000;
+        command.creation_flags(CREATE_NEW_PROCESS_GROUP | CREATE_NO_WINDOW);
+    }
+
+    command.spawn().map(|_| ())
+}