Fixed.

diff --git a/epg.el b/epg.el
index 6989498..8615667 100644 (file)
--- a/epg.el
+++ b/epg.el
@@ -1207,6 +1207,7 @@ of PREFIX, and expanding against `temporary-file-directory' if necessary),
 is guaranteed to point to a newly created empty file.
 You can then use `write-region' to write new data into the file."
     (let (tempdir tempfile)
+      (setq prefix (expand-file-name prefix temporary-file-directory))
       (unwind-protect
          (let (file)
            ;; First, create a temporary directory.