X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/e41a5cbae9d208a191884e634f77ab6ccc990e64..dadfc30dae9529282a05720155d4aa1c5bd749b1:/lisp/epg-config.el

diff --git a/lisp/epg-config.el b/lisp/epg-config.el
index 9179e04dcc..8a208044cb 100644
--- a/lisp/epg-config.el
+++ b/lisp/epg-config.el
@@ -81,69 +81,57 @@ Note that the buffer name starts with a space."
 (defconst epg-config--program-alist
   '((OpenPGP
      epg-gpg-program
+     epg-config--make-gpg-configuration
      ("gpg2" . "2.1.6") ("gpg" . "1.4.3"))
     (CMS
      epg-gpgsm-program
+     epg-config--make-gpgsm-configuration
      ("gpgsm" . "2.0.4")))
   "Alist used to obtain the usable configuration of executables.
 The first element of each entry is protocol symbol, which is
 either `OpenPGP' or `CMS'.  The second element is a symbol where
-the executable name is remembered.  The rest of the entry is an
-alist mapping executable names to the minimum required version
-suitable for the use with Emacs.")
-
-(defconst epg-config--configuration-constructor-alist
-  '((OpenPGP . epg-config--make-gpg-configuration)
-    (CMS . epg-config--make-gpgsm-configuration))
-  "Alist used to obtain the usable configuration of executables.
-The first element of each entry is protocol symbol, which is
-either `OpenPGP' or `CMS'.  The second element is a function
-which constructs a configuration object (actually a plist).")
+the executable name is remembered.  The third element is a
+function which constructs a configuration object (actually a
+plist).  The rest of the entry is an alist mapping executable
+names to the minimum required version suitable for the use with
+Emacs.")
 
 (defvar epg--configurations nil)
 
 ;;;###autoload
-(defun epg-find-configuration (protocol &optional no-cache program-alist)
+(defun epg-find-configuration (protocol &optional force)
   "Find or create a usable configuration to handle PROTOCOL.
 This function first looks at the existing configuration found by
-the previous invocation of this function, unless NO-CACHE is non-nil.
-
-Then it walks through PROGRAM-ALIST or
-`epg-config--program-alist'.  If `epg-gpg-program' or
-`epg-gpgsm-program' is already set with custom, use it.
-Otherwise, it tries the programs listed in the entry until the
-version requirement is met."
-  (unless program-alist
-    (setq program-alist epg-config--program-alist))
-  (let ((entry (assq protocol program-alist)))
+the previous invocation of this function, unless FORCE is non-nil.
+
+Then it walks through `epg-config--program-alist'.  If
+`epg-gpg-program' or `epg-gpgsm-program' is already set with
+custom, use it.  Otherwise, it tries the programs listed in the
+entry until the version requirement is met."
+  (let ((entry (assq protocol epg-config--program-alist)))
     (unless entry
       (error "Unknown protocol %S" protocol))
-    (cl-destructuring-bind (symbol . alist)
+    (cl-destructuring-bind (symbol constructor . alist)
         (cdr entry)
-      (let ((constructor
-             (alist-get protocol epg-config--configuration-constructor-alist)))
-        (or (and (not no-cache) (alist-get protocol epg--configurations))
-            ;; If the executable value is already set with M-x
-            ;; customize, use it without checking.
-            (if (and symbol (get symbol 'saved-value))
-                (let ((configuration
-                       (funcall constructor (symbol-value symbol))))
-                  (push (cons protocol configuration) epg--configurations)
-                  configuration)
-              (catch 'found
-                (dolist (program-version alist)
-                  (let ((executable (executable-find (car program-version))))
-                    (when executable
-                      (let ((configuration
-                             (funcall constructor executable)))
-                        (when (ignore-errors
-                                (epg-check-configuration configuration
-                                                         (cdr program-version))
-                                t)
-                          (unless no-cache
-                            (push (cons protocol configuration)
-                                  epg--configurations))
-                          (throw 'found configuration)))))))))))))
+      (or (and (not force) (alist-get protocol epg--configurations))
+          ;; If the executable value is already set with M-x
+          ;; customize, use it without checking.
+          (if (get symbol 'saved-value)
+              (let ((configuration (funcall constructor (symbol-value symbol))))
+                (push (cons protocol configuration) epg--configurations)
+                configuration)
+            (catch 'found
+              (dolist (program-version alist)
+                (let ((executable (executable-find (car program-version))))
+                  (when executable
+                    (let ((configuration
+                           (funcall constructor executable)))
+                      (when (ignore-errors
+                              (epg-check-configuration configuration
+                                                       (cdr program-version))
+                              t)
+                        (push (cons protocol configuration) epg--configurations)
+                        (throw 'found configuration))))))))))))
 
 ;; Create an `epg-configuration' object for `gpg', using PROGRAM.
 (defun epg-config--make-gpg-configuration (program)