Update.

diff --git a/arxiv-rename-pdf.sh b/arxiv-rename-pdf.sh
index b165c5e..1cc408a 100755 (executable)
--- a/arxiv-rename-pdf.sh
+++ b/arxiv-rename-pdf.sh
@@ -29,7 +29,7 @@ tmp=$(mktemp /tmp/arxiv-bib.sh.XXXXXX)
 while [[ "$1" ]]
 do
 
-    if [[ $1 =~ ^http ]]
+    if [[ $1 =~ ^http ]] || [[ $1 =~ ^[0-9\.]*$ ]]
     then
         id="$(echo "$1" | sed -e 's|^.*/\([0-9.]*\)$|\1|')"
         wget "https://arxiv.org/pdf/${id}"