Don't quote lambda forms

This generates byte-compiler warnings on (at least) current trunk
versions of Emacs.  The quote is not necessary; lambda forms are
self-quoting.

emacs/notmuch-crypto.el

@@ -68,7 +68,7 @@ mode."
   :group 'notmuch)
 
 (define-button-type 'notmuch-crypto-status-button-type
-  'action '(lambda (button) (message (button-get button 'help-echo)))
+  'action (lambda (button) (message (button-get button 'help-echo)))
   'follow-link t
   'help-echo "Set notmuch-crypto-process-mime to process cryptographic mime parts.")
 
@@ -77,7 +77,7 @@ mode."
 	 (help-msg nil)
 	 (label "Signature not processed")
 	 (face 'notmuch-crypto-signature-unknown)
-	 (button-action '(lambda (button) (message (button-get button 'help-echo)))))
+	 (button-action (lambda (button) (message (button-get button 'help-echo)))))
     (cond
      ((string= status "good")
       (let ((fingerprint (concat "0x" (plist-get sigstatus :fingerprint))))

emacs/notmuch-hello.el

@@ -336,7 +336,7 @@ should be. Returns a cons cell `(tags-per-line width)'."
 (defvar notmuch-hello-mode-map
   (let ((map (make-sparse-keymap)))
     (set-keymap-parent map widget-keymap)
-    (define-key map "v" '(lambda () "Display the notmuch version" (interactive)
+    (define-key map "v" (lambda () "Display the notmuch version" (interactive)
 			  (message "notmuch version %s" (notmuch-version))))
     (define-key map "?" 'notmuch-help)
     (define-key map "q" 'notmuch-kill-this-buffer)
@@ -513,7 +513,7 @@ Complete list of currently available key bindings:
 	  (widget-insert "\n\n")
 	  (let ((start (point))
 		(nth 0))
-	    (mapc '(lambda (search)
+	    (mapc (lambda (search)
 		    (let ((widget-symbol (intern (format "notmuch-hello-search-%d" nth))))
 		      (set widget-symbol
 			   (widget-create 'editable-field

emacs/notmuch-maildir-fcc.el

@@ -65,7 +65,7 @@ yet when sending a mail."
     ;; Set up the message-fcc-handler to move mails to the maildir in Fcc
     ;; The parameter is set to mark messages as "seen"
     (setq message-fcc-handler-function
-          '(lambda (destdir)
+          (lambda (destdir)
 	    (notmuch-maildir-fcc-write-buffer-to-maildir destdir t)))
     ;; add a hook to actually insert the Fcc header when sending
     (add-hook 'message-header-setup-hook 'notmuch-fcc-header-setup))
@@ -131,7 +131,7 @@ will NOT be removed or replaced."
  
 (defun notmuch-maildir-fcc-host-fixer (hostname)
   (replace-regexp-in-string "/\\|:"
-			    '(lambda (s)
+			    (lambda (s)
 			      (cond ((string-equal s "/") "\\057")
 				    ((string-equal s ":") "\\072")
 				    (t s)))

emacs/notmuch-message.el

@@ -39,7 +39,7 @@ the \"inbox\" and \"todo\", you would set
     (when (and notmuch-message-replied-tags rep)
       ;; add a "+" to any tag that is doesn't already begin with a "+"
       ;; or "-"
-      (let ((tags (mapcar '(lambda (str)
+      (let ((tags (mapcar (lambda (str)
 			    (if (not (string-match "^[+-]" str))
 				(concat "+" str)
 			      str))

emacs/notmuch-show.el

@@ -265,7 +265,7 @@ message at DEPTH in the current thread."
 (defun notmuch-show-insert-headers (headers)
   "Insert the headers of the current message."
   (let ((start (point)))
-    (mapc '(lambda (header)
+    (mapc (lambda (header)
 	    (let* ((header-symbol (intern (concat ":" header)))
 		   (header-value (plist-get headers header-symbol)))
 	      (if (and header-value
@@ -344,7 +344,7 @@ current buffer, if possible."
     ))
 
 (defun notmuch-show-multipart/*-to-list (part)
-  (mapcar '(lambda (inner-part) (plist-get inner-part :content-type))
+  (mapcar (lambda (inner-part) (plist-get inner-part :content-type))
 	  (plist-get part :content)))
 
 (defun notmuch-show-multipart/alternative-choose (types)
@@ -657,7 +657,7 @@ current buffer, if possible."
 
 (defun notmuch-show-insert-body (msg body depth)
   "Insert the body BODY at depth DEPTH in the current thread."
-  (mapc '(lambda (part) (notmuch-show-insert-bodypart msg part depth)) body))
+  (mapc (lambda (part) (notmuch-show-insert-bodypart msg part depth)) body))
 
 (defun notmuch-show-make-symbol (type)
   (make-symbol (concat "notmuch-show-" type)))
@@ -775,11 +775,11 @@ current buffer, if possible."
 
 (defun notmuch-show-insert-thread (thread depth)
   "Insert the thread THREAD at depth DEPTH in the current forest."
-  (mapc '(lambda (tree) (notmuch-show-insert-tree tree depth)) thread))
+  (mapc (lambda (tree) (notmuch-show-insert-tree tree depth)) thread))
 
 (defun notmuch-show-insert-forest (forest)
   "Insert the forest of threads FOREST."
-  (mapc '(lambda (thread) (notmuch-show-insert-thread thread 0)) forest))
+  (mapc (lambda (thread) (notmuch-show-insert-thread thread 0)) forest))
 
 (defvar notmuch-show-thread-id nil)
 (make-variable-buffer-local 'notmuch-show-thread-id)

emacs/notmuch.el

@@ -662,7 +662,7 @@ foreground and blue background."
   ;; Create the overlay only if the message has tags which match one
   ;; of those specified in `notmuch-search-line-faces'.
   (let (overlay)
-    (mapc '(lambda (elem)
+    (mapc (lambda (elem)
 	    (let ((tag (car elem))
 		  (attributes (cdr elem)))
 	      (when (member tag line-tag-list)