From 52a1deffa263ca27d30a6ee57b14f13d231a672d Mon Sep 17 00:00:00 2001
From: Adam Porter <adam@alphapapa.net>
Date: Thu, 24 May 2018 09:50:46 -0500
Subject: [PATCH] Change: Error if file can't be opened

---
 org-ql.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/org-ql.el b/org-ql.el
index 17e9a50..8ecf0ad 100644
--- a/org-ql.el
+++ b/org-ql.el
@@ -67,7 +67,8 @@ buffer (the default is to widen and search the entire buffer)."
     (-flatten-n 1 (--map (with-current-buffer (cl-typecase it
                                                 (buffer it)
                                                 (string (or (find-buffer-visiting it)
-                                                            (find-file-noselect it))))
+                                                            (find-file-noselect it)
+                                                            (user-error "Can't open file: %s" it))))
                            (mapcar action-fn
                                    (org-ql--filter-buffer :pred pred :narrow narrow)))
                          buffers-or-files))))