* epg.el (epg--start): Ignore errors when /dev/fd/0 does not exist.

2 files changed, 10 insertions, 3 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 3aae01b9f1e..f327b929e56 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-03  Daiki Ueno  <ueno@gnu.org>
+
+        * epg.el (epg--start): Ignore errors when /dev/fd/0 does not
+        exist.  (Bug#13344)
+
 2013-01-03  Glenn Morris  <rgm@gnu.org>
 
         * mail/rmail.el (rmail-set-header-1): Ignore case.
diff --git a/lisp/epg.el b/lisp/epg.el
index 6be3ba15a97..ff32661ada9 100644
--- a/lisp/epg.el
+++ b/lisp/epg.el
@@ -1167,9 +1167,11 @@ This function is for internal use only."
     ;; use `terminal-name' here to get the real pty name for the child
     ;; process, though /dev/fd/0" is not portable.
     (with-temp-buffer
-      (when (= (call-process "tty" "/dev/fd/0" t) 0)
-        (delete-backward-char 1)
-        (setq terminal-name (buffer-string))))
+      (condition-case nil
+          (when (= (call-process "tty" "/dev/fd/0" t) 0)
+            (delete-backward-char 1)
+            (setq terminal-name (buffer-string)))
+        (file-error)))
     (when terminal-name
       (setq process-environment
             (cons (concat "GPG_TTY=" terminal-name)