Capture the raw continuation of the exception if evaluation fails

scheme/nuit-engine.scm

@@ -617,10 +617,11 @@
 (define eval-expression
   (let ((env (init-evaluation-environment 'nuit-eval)))
     (lambda (exp)
-      (with-fatal-error-handler
-       (lambda (condition more)
-	 (cons 'error condition))
-       (eval (read-sexp-from-string exp) env)))))
+      (with-fatal-and-capturing-error-handler
+       (lambda (condition continuation decline)
+         continuation)
+       (lambda ()
+         (eval (read-sexp-from-string exp) env))))))
 
 (define (post-message plugin message)
   (cond