Simplify some rococo Gnus code that loads or tests for other libraries.

* lisp/gnus/gnus-art.el (gnus-treat-ansi-sequences): Simplify default.
* lisp/gnus/mml-smime.el (epg): Simply require it.
(mml-smime-use): Simplify the default.  Doc fix.
* lisp/gnus/mml2015.el (epg-config): Require it.
(mml2015-use): Simplify the default.
* lisp/gnus/smime.el (password-cache): Simply require it.
(password-read-and-add): Remove declaration.

1 files changed, 6 insertions, 6 deletions

diff --git a/lisp/gnus/mml-smime.el b/lisp/gnus/mml-smime.el
index 02e602ce77f..e473a6d3ff3 100644
--- a/lisp/gnus/mml-smime.el
+++ b/lisp/gnus/mml-smime.el
@@ -32,17 +32,17 @@
 (autoload 'message-narrow-to-headers "message")
 (autoload 'message-fetch-field "message")
 
-;; Prefer epg over openssl if it is available as epg uses GnuPG's gpgsm,
+;; Prefer epg over openssl as epg uses GnuPG's gpgsm,
 ;; which features full-fledged certificate management, while openssl requires
 ;; major manual efforts for certificate revocation and expiry and has bugs
 ;; as documented under man smime(1).
-(ignore-errors (require 'epg))
+(require 'epg)
 
-(defcustom mml-smime-use (if (featurep 'epg) 'epg 'openssl)
+(defcustom mml-smime-use 'epg
   "Whether to use OpenSSL or EasyPG (EPG) to handle S/MIME messages.
-Defaults to EPG if it's available.
-If you think about using OpenSSL, please read the BUGS section in the manual
-for the `smime' command coming with OpenSSL first.  EasyPG is recommended."
+If you're thinking about using OpenSSL, please first read the BUGS section
+in the manual for the `smime' command that comes with OpenSSL.
+We recommend EasyPG."
   :group 'mime-security
   :type '(choice (const :tag "EPG" epg)
                  (const :tag "OpenSSL" openssl)))