Replace pos-eol with older line-end-position function

emacs/merlin-cap-test.el

@@ -77,7 +77,7 @@
   (with-current-buffer messages-buffer-name
     (save-excursion
       (forward-line -1)
-      (buffer-substring (point) (pos-eol)))))
+      (buffer-substring (point) (line-end-position)))))
 
 (defmacro merlin-cap--with-test-buffer (&rest body)
   "Run BODY with a temp buffer set up for Merlin completion."
@@ -111,14 +111,14 @@ completion, and MESSAGE is the message printed."
     (message "\n")
     (message "[no message]")
     (completion-at-point)
-    (let ((end (pos-eol))
+    (let ((end (line-end-position))
           ;; Just so the ERT error renders more nicely
           (point (point)))
       (should (equal (list (buffer-substring start point)
                            (buffer-substring point end)
                            (merlin-cap--current-message))
                      (list new-prefix new-suffix message))))
-    (delete-region start (pos-eol))))
+    (delete-region start (line-end-position))))
 
 (ert-deftest test-merlin-cap-completion ()
   (with-temp-buffer