1 files changed, 13 insertions, 1 deletions

diff --git a/test/macos_e2e.swift b/test/macos_e2e.swift
index 42bc8229..16992271 100644
--- a/test/macos_e2e.swift
+++ b/test/macos_e2e.swift
@@ -47,7 +47,7 @@ private struct ScriptError: Error {
     let message: String
 }
 
-/// What the two C callbacks reach through `userdata`. A class, because a C
+/// What the three C callbacks reach through `userdata`. A class, because a C
 /// function pointer cannot capture: a pointer the runtime struct carries is the
 /// only way back into Swift state.
 private final class Host {
@@ -177,6 +177,18 @@ private final class Driver: PardesViewDelegate {
                     yank = String(decoding: bytes, as: UTF8.self)
                 }
                 host.clipboard = yank
+            },
+            read_clipboard: { ud in
+                // Main thread, inside pardes_tick, and answered on the spot:
+                // the core asked for the clipboard and pardes_paste hands it
+                // back before this returns. `host.clipboard`, never
+                // NSPasteboard, for the same reason as set_clipboard above.
+                // No pump — the tick that emitted this effect is still
+                // draining and will pick up whatever the paste queued.
+                guard let ud else { return }
+                let host = Unmanaged<Host>.fromOpaque(ud).takeUnretainedValue()
+                let text = host.clipboard ?? ""
+                text.withCString { pardes_paste($0, text.utf8.count) }
             })
 
         let rc = pardes_init(&runtime, got.cols, got.rows)