diff --git a/test/issues/640/testagain/test.pgf b/test/issues/640/testagain/test.pgf
new file mode 100644
index 0000000..e69de29
diff --git a/test/issues/640/tested.pdf b/test/issues/640/tested.pdf
new file mode 100644
index 0000000..e69de29
diff --git a/test/issues/640/tester/test.pdf b/test/issues/640/tester/test.pdf
new file mode 100644
index 0000000..e69de29
diff --git a/test/issues/640/tester/test.tex b/test/issues/640/tester/test.tex
new file mode 100644
index 0000000..117f4bc
--- /dev/null
+++ b/test/issues/640/tester/test.tex
@@ -0,0 +1,13 @@
+\documentclass{article}
+\usepackage[utf8]{inputenc}
+\usepackage{graphicx}
+\graphicspath{{test} {testing}%
+  {../}
+  {../testagain/}
+}
+
+\begin{document}
+
+\includegraphics[width=0.9\linewidth]{}
+
+\end{document}
diff --git a/test/issues/640/tester/test/test.png b/test/issues/640/tester/test/test.png
new file mode 100644
index 0000000..e69de29
diff --git a/test/issues/640/tester/testing/test.eps b/test/issues/640/tester/testing/test.eps
new file mode 100644
index 0000000..e69de29