Merge emacs bug fixes from release

emacs/notmuch-lib.el

@@ -23,6 +23,7 @@
 
 ;;; Code:
 
+(require 'mm-util)
 (require 'mm-view)
 (require 'mm-decode)
 (require 'cl)
@@ -572,7 +573,20 @@ the given type."
 				   ,@(when process-crypto '("--decrypt"))
 				   ,(notmuch-id-to-query (plist-get msg :id))))
 			   (coding-system-for-read
-			    (if binaryp 'no-conversion 'utf-8)))
+			    (if binaryp 'no-conversion
+			      (let ((coding-system (mm-charset-to-coding-system
+						    (plist-get part :content-charset))))
+				;; Sadly,
+				;; `mm-charset-to-coding-system' seems
+				;; to return things that are not
+				;; considered acceptable values for
+				;; `coding-system-for-read'.
+				(if (coding-system-p coding-system)
+				    coding-system
+				  ;; RFC 2047 says that the default
+				  ;; charset is US-ASCII. RFC6657
+				  ;; complicates this somewhat.
+				  'us-ascii)))))
 		       (apply #'call-process notmuch-command nil '(t nil) nil args)
 		       (buffer-string))))))
     (when (and cache data)

emacs/notmuch-mua.el

@@ -338,7 +338,10 @@ modified. This function is notmuch addaptation of
 	  ;; We need to convert any string input, eg from rmail-start-mail.
 	  (dolist (h other-headers other-headers)
 	    (if (stringp (car h)) (setcar h (intern (capitalize (car h))))))))
-	(args (list yank-action send-actions)))
+	(args (list yank-action send-actions))
+	;; Cause `message-setup-1' to do things relevant for mail,
+	;; such as observe `message-default-mail-headers'.
+	(message-this-is-mail t))
     ;; message-setup-1 in Emacs 23 does not accept return-action
     ;; argument. Pass it only if it is supplied by the caller. This
     ;; will never be the case when we're called by `compose-mail' in