1 files changed, 2 insertions, 1 deletions
diff --git a/modules/ext/ui-studio.js b/modules/ext/ui-studio.js
index adda6a1..e8341f3 100644
--- a/modules/ext/ui-studio.js
+++ b/modules/ext/ui-studio.js
@@ -124,7 +124,8 @@ body[data-ui-mode="studio"] #ui-root { display: grid; grid-template-columns: 1.1
                 const target = filePath || '/notes.md';
                 const btn = api.el('button', { class: 'wx11-btn', text: '📝 Open the editor for ' + target });
                 btn.addEventListener('click', () => {
-                    api.exec('edit ' + target);
+                    // Quoted: a filename with a space would arrive as two arguments (found by review).
+                    api.exec("edit '" + String(target).replace(/'/g, "'\\''") + "'");
                     api.toast('Editor takes over the chat pane — close it to return');
                 });
                 bodyEl.appendChild(btn);