diff --git a/fnl/conjure/client/fennel/nfnl.fnl b/fnl/conjure/client/fennel/nfnl.fnl
index ce5f9fcd..77bf3ab8 100644
--- a/fnl/conjure/client/fennel/nfnl.fnl
+++ b/fnl/conjure/client/fennel/nfnl.fnl
@@ -10,8 +10,6 @@
 (local repl (autoload :conjure.nfnl.repl))
 (local fs (autoload :conjure.nfnl.fs))
 
-;; TODO Eval and replace isn't working.
-
 (local M
   (define :conjure.client.fennel.nfnl
     {:comment-node? ts.lisp-comment-node?
@@ -88,7 +86,11 @@
         (tset package.loaded mod-path (core.merge! mod (core.last results)))))
 
     (when (not (core.empty? result-strs))
-      (log.append (text.split-lines (str.join "\n" result-strs))))))
+      (let [result (str.join "\n" result-strs)]
+        (when opts.on-result
+          (opts.on-result result))
+
+        (log.append (text.split-lines result))))))
 
 (fn M.eval-file [opts]
   "Client function, called by Conjure when evaluating a file from disk."
diff --git a/lua/conjure/client/fennel/nfnl.lua b/lua/conjure/client/fennel/nfnl.lua
index 2d60b5ba..50f7a463 100644
--- a/lua/conjure/client/fennel/nfnl.lua
+++ b/lua/conjure/client/fennel/nfnl.lua
@@ -83,7 +83,12 @@ M["eval-str"] = function(opts)
   else
   end
   if not core["empty?"](result_strs) then
-    return log.append(text["split-lines"](str.join("\n", result_strs)))
+    local result = str.join("\n", result_strs)
+    if opts["on-result"] then
+      opts["on-result"](result)
+    else
+    end
+    return log.append(text["split-lines"](result))
   else
     return nil
   end