Add compatibility functions gnus-process-get and gnus-process-put for Emacs 21 and XEmacs.

2 files changed, 38 insertions, 20 deletions

diff --git a/lisp/gnus/ChangeLog b/lisp/gnus/ChangeLog
index dd1b54f9a0e..d7bc81bcac8 100644
--- a/lisp/gnus/ChangeLog
+++ b/lisp/gnus/ChangeLog
@@ -1,3 +1,8 @@
+2010-09-01  Katsumi Yamaoka  <yamaoka@jpl.org>
+
+        * gnus-ems.el (gnus-process-get, gnus-process-put): New compatibility
+        functions.
+
 2010-08-31  Julien Danjou  <julien@danjou.info>  (tiny change)
 
         * nnimap.el (nnimap-request-newgroups): Use nnimap-request-list-method
diff --git a/lisp/gnus/gnus-ems.el b/lisp/gnus/gnus-ems.el
index 32b126a2713..06b1803ef06 100644
--- a/lisp/gnus/gnus-ems.el
+++ b/lisp/gnus/gnus-ems.el
@@ -305,26 +305,39 @@
           (setq start end
                 end nil))))))
 
-(if (fboundp 'set-process-plist)
-    (progn
-      (defalias 'gnus-set-process-plist 'set-process-plist)
-      (defalias 'gnus-process-plist 'process-plist))
-  (defun gnus-set-process-plist (process plist)
-    "Replace the plist of PROCESS with PLIST.  Returns PLIST."
-    (put 'gnus-process-plist process plist))
-  (defun gnus-process-plist (process)
-    "Return the plist of PROCESS."
-    ;; Remove those of dead processes from `gnus-process-plist'
-    ;; to prevent it from growing.
-    (let ((plist (symbol-plist 'gnus-process-plist))
-          proc)
-      (while (setq proc (car plist))
-        (if (and (processp proc)
-                 (memq (process-status proc) '(open run)))
-            (setq plist (cddr plist))
-          (setcar plist (caddr plist))
-          (setcdr plist (or (cdddr plist) '(nil))))))
-    (get 'gnus-process-plist process)))
+(eval-and-compile
+  (if (fboundp 'set-process-plist)
+      (progn
+        (defalias 'gnus-set-process-plist 'set-process-plist)
+        (defalias 'gnus-process-plist 'process-plist)
+        (defalias 'gnus-process-get 'process-get)
+        (defalias 'gnus-process-put 'process-put))
+    (defun gnus-set-process-plist (process plist)
+      "Replace the plist of PROCESS with PLIST.  Returns PLIST."
+      (put 'gnus-process-plist process plist))
+    (defun gnus-process-plist (process)
+      "Return the plist of PROCESS."
+      ;; Remove those of dead processes from `gnus-process-plist'
+      ;; to prevent it from growing.
+      (let ((plist (symbol-plist 'gnus-process-plist))
+            proc)
+        (while (setq proc (car plist))
+          (if (and (processp proc)
+                   (memq (process-status proc) '(open run)))
+              (setq plist (cddr plist))
+            (setcar plist (caddr plist))
+            (setcdr plist (or (cdddr plist) '(nil))))))
+      (get 'gnus-process-plist process))
+    (defun gnus-process-get (process propname)
+      "Return the value of PROCESS' PROPNAME property.
+This is the last value stored with `(gnus-process-put PROCESS PROPNAME VALUE)'."
+      (plist-get (gnus-process-plist process) propname))
+    (defun gnus-process-put (process propname value)
+      "Change PROCESS' PROPNAME property to VALUE.
+It can be retrieved with `(gnus-process-get PROCESS PROPNAME)'."
+      (gnus-set-process-plist process
+                              (plist-put (process-plist process)
+                                         propname value)))))
 
 (provide 'gnus-ems)