From 855078c284d71041cafdf770b612fa108db82fe6 Mon Sep 17 00:00:00 2001
From: Andreas Politz <politza@hochschule-trier.de>
Date: Mon, 2 Feb 2015 08:40:35 +0100
Subject: Validate optional argument.

* lisp/pdf-info.el (pdf-info-addannot): Check if file-or-buffer was given.
---
 lisp/pdf-info.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisp/pdf-info.el b/lisp/pdf-info.el
index 2f9da62..22d69ba 100644
--- a/lisp/pdf-info.el
+++ b/lisp/pdf-info.el
@@ -982,6 +982,9 @@ FIXME: -1 = 24
 See `pdf-info-getannots' for the kind of value of this function
 returns."
   (pdf-info-assert-writable-annotations)
+  (when (consp file-or-buffer)
+    (push file-or-buffer markup-edges)
+    (setq file-or-buffer nil))
   (apply
    'pdf-info-query
    'addannot
-- 
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