* url-handlers.el (url-file-handler-load-in-progress): New defvar.

(url-file-handler): Use it, in order to avoid recursive load.

2 files changed, 26 insertions, 14 deletions

diff --git a/lisp/url/ChangeLog b/lisp/url/ChangeLog
index da7d7325a01..408f659681f 100644
--- a/lisp/url/ChangeLog
+++ b/lisp/url/ChangeLog
@@ -1,3 +1,8 @@
+2014-05-09  Michael Albinus  <michael.albinus@gmx.de>
+
+	* url-handlers.el (url-file-handler-load-in-progress): New defvar.
+	(url-file-handler): Use it, in order to avoid recursive load.
+
 2014-05-01  Glenn Morris  <rgm@gnu.org>
 
 	* url-parse.el (url-generic-parse-url): Doc fix (replace `iff').
diff --git a/lisp/url/url-handlers.el b/lisp/url/url-handlers.el
index ecf56e786b5..b0f01123bbb 100644
--- a/lisp/url/url-handlers.el
+++ b/lisp/url/url-handlers.el
@@ -137,25 +137,32 @@ like URLs \(Gnus is particularly bad at this\)."
 	(inhibit-file-name-operation operation))
     (apply operation args)))
 
+(defvar url-file-handler-load-in-progress nil
+  "Check for recursive load.")
+
 ;;;###autoload
 (defun url-file-handler (operation &rest args)
   "Function called from the `file-name-handler-alist' routines.
 OPERATION is what needs to be done (`file-exists-p', etc).  ARGS are
 the arguments that would have been passed to OPERATION."
-  (let ((fn (get operation 'url-file-handlers))
-	(val nil)
-	(hooked nil))
-    (if (and (not fn) (intern-soft (format "url-%s" operation))
-             (fboundp (intern-soft (format "url-%s" operation))))
-        (error "Missing URL handler mapping for %s" operation))
-    (if fn
-	(setq hooked t
-	      val (save-match-data (apply fn args)))
-      (setq hooked nil
-	    val (url-run-real-handler operation args)))
-    (url-debug 'handlers "%s %S%S => %S" (if hooked "Hooked" "Real")
-	       operation args val)
-    val))
+  ;; Avoid recursive load.
+  (if (and load-in-progress url-file-handler-load-in-progress)
+      (url-run-real-handler operation args)
+    (let ((url-file-handler-load-in-progress load-in-progress)
+	  (fn (get operation 'url-file-handlers))
+	  (val nil)
+	  (hooked nil))
+      (if (and (not fn) (intern-soft (format "url-%s" operation))
+	       (fboundp (intern-soft (format "url-%s" operation))))
+	  (error "Missing URL handler mapping for %s" operation))
+      (if fn
+	  (setq hooked t
+		val (save-match-data (apply fn args)))
+	(setq hooked nil
+	      val (url-run-real-handler operation args)))
+      (url-debug 'handlers "%s %S%S => %S" (if hooked "Hooked" "Real")
+		 operation args val)
+      val)))
 
 (defun url-file-handler-identity (&rest args)
   ;; Identity function