Michael Aaron Murphy
--- a/src/lib/shell/completer.rs
+++ b/src/lib/shell/completer.rs
        }
    });

-    let iter_inner_glob: Box<Iterator<Item = String>> = match globs {
-        Some(iter) => Box::new(iter),
-        None => Box::new(iter::once(escape(start))),
+    #[auto_enum(Iterator)]
+    let iter_inner_glob = match globs {
--- a/src/lib/shell/pipe_exec/mod.rs
+++ b/src/lib/shell/pipe_exec/mod.rs
    }

    fn wait(&mut self, pgid: u32, commands: SmallVec<[RefinedJob; 16]>) -> i32 {
-        let as_string = if commands.is_empty() {
-            // This doesn't allocate
-            String::new()
-        } else {
-            commands.iter().map(RefinedJob::long).collect::<Vec<String>>().join(" | ")
-        };
+        crate::IonPool::string(|as_string| {
+            if !commands.is_empty() {
+                let mut iter = commands.iter().map(RefinedJob::long);