term: Fix editor command with args

We add support for `EDITOR` being set to a command with arguments, eg.
`code --wait`.

Fixes dd6861f.

Cargo.lock

@@ -2595,6 +2595,7 @@ dependencies = [
  "libc",
  "once_cell",
  "pretty_assertions",
+ "shlex",
  "tempfile",
  "termion 3.0.0",
  "unicode-display-width",

radicle-term/Cargo.toml

@@ -17,6 +17,7 @@ anstyle-query = { version = "1.0.0" }
 inquire = { version = "0.6.2", default-features = false, features = ["termion", "editor"] }
 libc = { version = "0.2" }
 once_cell = { version = "1.13" }
+shlex = { version = "1.1" }
 termion = { version = "3" }
 unicode-display-width = { version = "0.3.0" }
 unicode-segmentation = { version = "1.7.1" }

radicle-term/src/editor.rs

@@ -69,6 +69,18 @@ impl Editor {
                 "editor not configured: the `EDITOR` environment variable is not set",
             ));
         };
+        let Some(parts) = shlex::split(cmd.to_string_lossy().as_ref()) else {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                format!("invalid editor command {cmd:?}"),
+            ));
+        };
+        let Some((program, args)) = parts.split_first() else {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                format!("invalid editor command {cmd:?}"),
+            ));
+        };
 
         // We duplicate the stderr file descriptor to pass it to the child process, otherwise, if
         // we simply pass the `RawFd` of our stderr, `Command` will close our stderr when the
@@ -84,10 +96,11 @@ impl Editor {
             process::Stdio::from(tty)
         };
 
-        process::Command::new(&cmd)
+        process::Command::new(program)
             .stdout(unsafe { process::Stdio::from_raw_fd(stderr) })
             .stderr(process::Stdio::inherit())
             .stdin(stdin)
+            .args(args)
             .arg(&self.path)
             .spawn()
             .map_err(|e| {