emacs: various cosmetic improvements

9 files changed, 125 insertions, 148 deletions

diff --git a/emacs/notmuch-address.el b/emacs/notmuch-address.el
index 1017c3ce..2f0ec9b3 100644
--- a/emacs/notmuch-address.el
+++ b/emacs/notmuch-address.el
@@ -21,6 +21,8 @@
 
 ;;; Code:
 
+(eval-when-compile (require 'cl-lib))
+
 (require 'message)
 (require 'notmuch-parser)
 (require 'notmuch-lib)
@@ -160,15 +162,12 @@ matching `notmuch-address-completion-headers-regexp'."
   (message "calling notmuch-address-message-insinuate is no longer needed"))
 
 (defun notmuch-address-setup ()
-  (let* ((setup-company (and notmuch-address-use-company
-			     (require 'company nil t)))
-	 (pair (cons notmuch-address-completion-headers-regexp
-		     #'notmuch-address-expand-name)))
-    (when setup-company
-      (notmuch-company-setup))
-    (unless (member pair message-completion-alist)
-      (setq message-completion-alist
-	    (push pair message-completion-alist)))))
+  (when (and notmuch-address-use-company
+	     (require 'company nil t))
+    (notmuch-company-setup))
+  (cl-pushnew (cons notmuch-address-completion-headers-regexp
+		    #'notmuch-address-expand-name)
+	      message-completion-alist :test #'equal))
 
 (defun notmuch-address-toggle-internal-completion ()
   "Toggle use of internal completion for current buffer.
@@ -264,9 +263,6 @@ requiring external commands."
   (let ((name-addr (plist-get result :name-addr)))
     (puthash name-addr t notmuch-address-completions)))
 
-(defun notmuch-address-harvest-handle-result (obj)
-  (notmuch-address-harvest-addr obj))
-
 (defun notmuch-address-harvest-filter (proc string)
   (when (buffer-live-p (process-buffer proc))
     (with-current-buffer (process-buffer proc)
@@ -274,7 +270,7 @@ requiring external commands."
 	(goto-char (point-max))
 	(insert string))
       (notmuch-sexp-parse-partial-list
-       'notmuch-address-harvest-handle-result (process-buffer proc)))))
+       'notmuch-address-harvest-addr (process-buffer proc)))))
 
 (defvar notmuch-address-harvest-procs '(nil . nil)
   "The currently running harvests.
diff --git a/emacs/notmuch-hello.el b/emacs/notmuch-hello.el
index a134eb07..ffd3d799 100644
--- a/emacs/notmuch-hello.el
+++ b/emacs/notmuch-hello.el
@@ -432,8 +432,7 @@ supported for \"Customized queries section\" items."
     ;; If an existing saved search with this name exists, remove it.
     (setq notmuch-saved-searches
 	  (cl-loop for elem in notmuch-saved-searches
-		   if (not (equal name
-				  (notmuch-saved-search-get elem :name)))
+		   unless (equal name (notmuch-saved-search-get elem :name))
 		   collect elem))
     ;; Add the new one.
     (customize-save-variable 'notmuch-saved-searches
@@ -481,18 +480,14 @@ diagonal."
 	     append (notmuch-hello-reflect-generate-row ncols nrows row list))))
 
 (defun notmuch-hello-widget-search (widget &rest _ignore)
-  (cond
-   ((eq (widget-get widget :notmuch-search-type) 'tree)
-    (notmuch-tree (widget-get widget
-			      :notmuch-search-terms)))
-   ((eq (widget-get widget :notmuch-search-type) 'unthreaded)
-    (notmuch-unthreaded (widget-get widget
-				    :notmuch-search-terms)))
+  (cl-case (widget-get widget :notmuch-search-type)
+   (tree
+    (notmuch-tree (widget-get widget :notmuch-search-terms)))
+   (unthreaded
+    (notmuch-unthreaded (widget-get widget :notmuch-search-terms)))
    (t
-    (notmuch-search (widget-get widget
-				:notmuch-search-terms)
-		    (widget-get widget
-				:notmuch-search-oldest-first)))))
+    (notmuch-search (widget-get widget :notmuch-search-terms)
+		    (widget-get widget :notmuch-search-oldest-first)))))
 
 (defun notmuch-saved-search-count (search)
   (car (process-lines notmuch-command "count" search)))
@@ -823,8 +818,7 @@ Complete list of currently available key bindings:
   ;; instead of a space to make `show-trailing-whitespace'
   ;; happy, i.e. avoid it marking the whole line as trailing
   ;; spaces.
-  (widget-insert ".")
-  (put-text-property (1- (point)) (point) 'invisible t)
+  (widget-insert (propertize "." 'invisible t))
   (widget-insert "\n"))
 
 (defun notmuch-hello-insert-recent-searches ()
diff --git a/emacs/notmuch-jump.el b/emacs/notmuch-jump.el
index 51bc4e31..34d6c796 100644
--- a/emacs/notmuch-jump.el
+++ b/emacs/notmuch-jump.el
@@ -63,8 +63,8 @@ fast way to jump to a saved search from anywhere in Notmuch."
     (setq action-map (nreverse action-map))
     (if action-map
 	(notmuch-jump action-map "Search: ")
-      (error "To use notmuch-jump, \
-please customize shortcut keys in notmuch-saved-searches."))))
+      (error "To use notmuch-jump, %s"
+	     "please customize shortcut keys in notmuch-saved-searches."))))
 
 (defvar notmuch-jump--action nil)
 
diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
index 1bdfc2b9..3add992b 100644
--- a/emacs/notmuch-lib.el
+++ b/emacs/notmuch-lib.el
@@ -192,8 +192,8 @@ will be signaled.
 
 Otherwise the output will be returned."
   (with-temp-buffer
-    (let* ((status (apply #'call-process notmuch-command nil t nil args))
-	   (output (buffer-string)))
+    (let ((status (apply #'call-process notmuch-command nil t nil args))
+	  (output (buffer-string)))
       (notmuch-check-exit-status status (cons notmuch-command args) output)
       output)))
 
@@ -248,7 +248,8 @@ displays both values separately."
 	 (len (length val)))
     ;; Trim off the trailing newline (if the value is empty or not
     ;; configured, there will be no newline)
-    (if (and (> len 0) (= (aref val (- len 1)) ?\n))
+    (if (and (> len 0)
+	     (= (aref val (- len 1)) ?\n))
 	(substring val 0 -1)
       val)))
 
@@ -538,13 +539,12 @@ This replaces spaces, percents, and double quotes in STR with
 ;;; Generic Utilities
 
 (defun notmuch-plist-delete (plist property)
-  (let* ((xplist (cons nil plist))
-	 (pred xplist))
-    (while (cdr pred)
-      (when (eq (cadr pred) property)
-	(setcdr pred (cdddr pred)))
-      (setq pred (cddr pred)))
-    (cdr xplist)))
+  (let (p)
+    (while plist
+      (unless (eq property (car plist))
+	(setq p (plist-put p (car plist) (cadr plist))))
+      (setq plist (cddr plist)))
+    p))
 
 ;;; MML Utilities
 
@@ -555,8 +555,10 @@ This replaces spaces, percents, and double quotes in STR with
     (if (or (string= (cadr st1) "*")
 	    (string= (cadr st2) "*"))
 	;; Comparison of content types should be case insensitive.
-	(string= (downcase (car st1)) (downcase (car st2)))
-      (string= (downcase t1) (downcase t2)))))
+	(string= (downcase (car st1))
+		 (downcase (car st2)))
+      (string= (downcase t1)
+	       (downcase t2)))))
 
 (defvar notmuch-multipart/alternative-discouraged
   '(;; Avoid HTML parts.
diff --git a/emacs/notmuch-maildir-fcc.el b/emacs/notmuch-maildir-fcc.el
index 9f09129d..c6bdd769 100644
--- a/emacs/notmuch-maildir-fcc.el
+++ b/emacs/notmuch-maildir-fcc.el
@@ -107,16 +107,13 @@ by notmuch-mua-mail."
 	   ;; Old style - no longer works.
 	   (error "Invalid `notmuch-fcc-dirs' setting (old style)"))
 	  ((listp notmuch-fcc-dirs)
-	   (let* ((from (message-field-value "From"))
-		  (match
-		   (catch 'first-match
-		     (dolist (re-folder notmuch-fcc-dirs)
-		       (when (string-match-p (car re-folder) from)
-			 (throw 'first-match re-folder))))))
-	     (if match
-		 (cdr match)
-	       (message "No Fcc header added.")
-	       nil)))
+	   (or (seq-some (let ((from (message-field-value "From")))
+			   (pcase-lambda (`(,regexp . ,folder))
+			     (and (string-match-p regexp from)
+				  folder)))
+			 notmuch-fcc-dirs)
+	       (progn (message "No Fcc header added.")
+		      nil)))
 	  (t
 	   (error "Invalid `notmuch-fcc-dirs' setting (neither string nor list)")))))
     (when subdir
@@ -128,9 +125,9 @@ by notmuch-mua-mail."
   ;; Notmuch insert does not accept absolute paths, so check the user
   ;; really want this header inserted.
   (when (or (not (= (elt subdir 0) ?/))
-	    (y-or-n-p
-	     (format "Fcc header %s is an absolute path and notmuch insert is requested.
-Insert header anyway? " subdir)))
+	    (y-or-n-p (format "Fcc header %s is an absolute path %s %s" subdir
+			      "and notmuch insert is requested."
+			      "Insert header anyway? ")))
     (message-add-header (concat "Fcc: " subdir))))
 
 (defun notmuch-maildir-add-file-style-fcc-header (subdir)
@@ -173,7 +170,7 @@ This is taken from the function message-do-fcc."
   "Process Fcc headers in the current buffer.
 
 This is a rearranged version of message mode's message-do-fcc."
-  (let (list file)
+  (let (files file)
     (save-excursion
       (save-restriction
 	(message-narrow-to-headers)
@@ -183,13 +180,11 @@ This is a rearranged version of message mode's message-do-fcc."
 	 (save-restriction
 	   (message-narrow-to-headers)
 	   (while (setq file (message-fetch-field "fcc" t))
-	     (push file list)
+	     (push file files)
 	     (message-remove-header "fcc" nil t)))
 	 (notmuch-maildir-setup-message-for-saving)
 	 ;; Process FCC operations.
-	 (while list
-	   (setq file (pop list))
-	   (notmuch-fcc-handler file))
+	 (mapc #'notmuch-fcc-handler files)
 	 (kill-buffer (current-buffer)))))))
 
 (defun notmuch-fcc-handler (fcc-header)
@@ -201,7 +196,8 @@ normal fcc."
   (message "Doing Fcc...")
   (if notmuch-maildir-use-notmuch-insert
       (notmuch-maildir-fcc-with-notmuch-insert fcc-header)
-    (notmuch-maildir-fcc-file-fcc fcc-header)))
+    (notmuch-maildir-fcc-file-fcc fcc-header))
+  (message "Doing Fcc...done"))
 
 ;;; Functions for saving a message using notmuch insert.
 
@@ -230,9 +226,8 @@ quoting each space with an immediately preceding backslash
 or surrounding the entire folder name in double quotes.
 
 If CREATE is non-nil then create the folder if necessary."
-  (let* ((args (split-string-and-unquote fcc-header))
-	 (folder (car args))
-	 (tags (cdr args)))
+  (pcase-let ((`(,folder . ,tags)
+	       (split-string-and-unquote fcc-header)))
     (condition-case nil
 	(notmuch-maildir-notmuch-insert-current-buffer folder create tags)
       ;; Since there are many reasons notmuch insert could fail, e.g.,
@@ -265,7 +260,7 @@ If CREATE is non-nil then create the folder if necessary."
   (let* ((ftime (float-time))
 	 (microseconds (mod (* 1000000 ftime) 1000000))
 	 (hostname (notmuch-maildir-fcc-host-fixer (system-name))))
-    (setq notmuch-maildir-fcc-count (+ notmuch-maildir-fcc-count 1))
+    (cl-incf notmuch-maildir-fcc-count)
     (format "%d.%d_%d_%d.%s"
 	    ftime
 	    (emacs-pid)
@@ -298,9 +293,7 @@ if successful, nil if not."
 	   (write-file (concat destdir "/tmp/" msg-id))
 	   msg-id)
 	  (t
-	   (error (format "Can't write to %s. Not a maildir."
-			  destdir))
-	   nil))))
+	   (error "Can't write to %s. Not a maildir." destdir)))))
 
 (defun notmuch-maildir-fcc-move-tmp-to-new (destdir msg-id)
   (add-name-to-file
@@ -345,16 +338,12 @@ return t if successful, and nil otherwise."
       (catch 'link-error
 	(let ((msg-id (notmuch-maildir-fcc-save-buffer-to-tmp destdir)))
 	  (when msg-id
-	    (cond (mark-seen
-		   (condition-case nil
-		       (notmuch-maildir-fcc-move-tmp-to-cur destdir msg-id t)
-		     (file-already-exists
-		      (throw 'link-error nil))))
-		  (t
-		   (condition-case nil
-		       (notmuch-maildir-fcc-move-tmp-to-new destdir msg-id)
-		     (file-already-exists
-		      (throw 'link-error nil))))))
+	    (condition-case nil
+		(if mark-seen
+		    (notmuch-maildir-fcc-move-tmp-to-cur destdir msg-id t)
+		  (notmuch-maildir-fcc-move-tmp-to-new destdir msg-id))
+	      (file-already-exists
+	       (throw 'link-error nil))))
 	  (delete-file (concat destdir "/tmp/" msg-id))))
       t)))
 
diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
index 74ffd8f2..4a08e8a7 100644
--- a/emacs/notmuch-mua.el
+++ b/emacs/notmuch-mua.el
@@ -179,13 +179,11 @@ Typically this is added to `notmuch-mua-send-hook'."
 
 (defun notmuch-mua-get-switch-function ()
   "Get a switch function according to `notmuch-mua-compose-in'."
-  (cond ((eq notmuch-mua-compose-in 'current-window)
-	 'switch-to-buffer)
-	((eq notmuch-mua-compose-in 'new-window)
-	 'switch-to-buffer-other-window)
-	((eq notmuch-mua-compose-in 'new-frame)
-	 'switch-to-buffer-other-frame)
-	(t (error "Invalid value for `notmuch-mua-compose-in'"))))
+  (pcase notmuch-mua-compose-in
+    ('current-window 'switch-to-buffer)
+    ('new-window     'switch-to-buffer-other-window)
+    ('new-frame      'switch-to-buffer-other-frame)
+    (_ (error "Invalid value for `notmuch-mua-compose-in'"))))
 
 (defun notmuch-mua-maybe-set-window-dedicated ()
   "Set the selected window as dedicated according to `notmuch-mua-compose-in'."
@@ -375,12 +373,10 @@ instead of `message-mode' and SWITCH-FUNCTION is mandatory."
 		(select-window window))
 	    (funcall switch-function buffer)
 	    (set-buffer buffer))
-	  (when (and (buffer-modified-p)
-		     (not (prog1
-			      (y-or-n-p
-			       "Message already being composed; erase? ")
-			    (message nil))))
-	    (error "Message being composed")))
+	  (when (buffer-modified-p)
+	    (if (y-or-n-p "Message already being composed; erase? ")
+		(message nil)
+	      (error "Message being composed"))))
       (funcall switch-function name)
       (set-buffer name))
     (erase-buffer)
@@ -611,8 +607,10 @@ unencrypted.  Really send? "))))
 ;;; _
 
 (define-mail-user-agent 'notmuch-user-agent
-  'notmuch-mua-mail 'notmuch-mua-send-and-exit
-  'notmuch-mua-kill-buffer 'notmuch-mua-send-hook)
+  'notmuch-mua-mail
+  'notmuch-mua-send-and-exit
+  'notmuch-mua-kill-buffer
+  'notmuch-mua-send-hook)
 
 ;; Add some more headers to the list that `message-mode' hides when
 ;; composing a message.
diff --git a/emacs/notmuch-query.el b/emacs/notmuch-query.el
index ffce8814..d7349b77 100644
--- a/emacs/notmuch-query.el
+++ b/emacs/notmuch-query.el
@@ -41,11 +41,9 @@ is a possibly empty forest of replies."
 
 (defun notmuch-query-map-aux  (mapper function seq)
   "Private function to do the actual mapping and flattening."
-  (apply 'append
-	 (mapcar
-	  (lambda (tree)
-	    (funcall mapper function tree))
-	  seq)))
+  (cl-mapcan (lambda (tree)
+	       (funcall mapper function tree))
+	     seq))
 
 (defun notmuch-query-map-threads (fn threads)
   "Apply function FN to every thread in THREADS.
@@ -63,7 +61,8 @@ Flatten results to a list.  See the function
   "Apply function FN to every message in TREE.
 Flatten results to a list.  See the function
 `notmuch-query-get-threads' for more information."
-  (cons (funcall fn (car tree)) (notmuch-query-map-forest fn (cadr tree))))
+  (cons (funcall fn (car tree))
+	(notmuch-query-map-forest fn (cadr tree))))
 
 ;;; Predefined queries
 
diff --git a/emacs/notmuch-tag.el b/emacs/notmuch-tag.el
index a553dfd9..0c9a32ac 100644
--- a/emacs/notmuch-tag.el
+++ b/emacs/notmuch-tag.el
@@ -454,8 +454,9 @@ present or a \"-\" to indicate that the tag should be removed
 from TAGS if present."
   (let ((result-tags (copy-sequence tags)))
     (dolist (tag-change tag-changes)
-      (let ((op (string-to-char tag-change))
-	    (tag (unless (string= tag-change "") (substring tag-change 1))))
+      (let ((op (aref tag-change 0))
+	    (tag (and (not (string= tag-change ""))
+		      (substring tag-change 1))))
 	(cl-case op
 	  (?+ (unless (member tag result-tags)
 		(push tag result-tags)))
@@ -482,13 +483,12 @@ messages instead of running (notmuch-call-notmuch-process \"tag\" ..)
 directly, so that hooks specified in notmuch-before-tag-hook and
 notmuch-after-tag-hook will be run."
   ;; Perform some validation
-  (mapc (lambda (tag-change)
-	  (unless (string-match-p "^[-+]\\S-+$" tag-change)
-	    (error "Tag must be of the form `+this_tag' or `-that_tag'")))
-	tag-changes)
+  (dolist (tag-change tag-changes)
+    (unless (string-match-p "^[-+]\\S-+$" tag-change)
+      (error "Tag must be of the form `+this_tag' or `-that_tag'")))
   (unless query
     (error "Nothing to tag!"))
-  (unless (null tag-changes)
+  (when tag-changes
     (run-hooks 'notmuch-before-tag-hook)
     (if (<= (length query) notmuch-tag-argument-limit)
 	(apply 'notmuch-call-notmuch-process "tag"
diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 3928cd65..c4ee9e63 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -179,7 +179,7 @@ there will be called at other points of notmuch execution."
   (let ((map (make-sparse-keymap)))
     (set-keymap-parent map notmuch-common-keymap)
     (define-key map "x" 'notmuch-bury-or-kill-this-buffer)
-    (define-key map (kbd "<DEL>") 'notmuch-search-scroll-down)
+    (define-key map (kbd "DEL") 'notmuch-search-scroll-down)
     (define-key map "b" 'notmuch-search-scroll-down)
     (define-key map " " 'notmuch-search-scroll-up)
     (define-key map "<" 'notmuch-search-first-thread)
@@ -232,7 +232,7 @@ there will be called at other points of notmuch execution."
 (defvar notmuch-search-target-thread)
 (defvar notmuch-search-target-line)
 
-(defvar notmuch-search-disjunctive-regexp      "\\<[oO][rR]\\>")
+(defvar notmuch-search-disjunctive-regexp "\\<[oO][rR]\\>")
 
 ;;; Movement
 
@@ -950,40 +950,39 @@ See `notmuch-tag' for information on the format of TAG-CHANGES."
   "Read a notmuch-query from the minibuffer with completion.
 
 PROMPT is the string to prompt with."
-  (let*
-      ((all-tags
-	(mapcar (lambda (tag) (notmuch-escape-boolean-term tag))
-		(process-lines notmuch-command "search" "--output=tags" "*")))
-       (completions
-	(append (list "folder:" "path:" "thread:" "id:" "date:" "from:" "to:"
-		      "subject:" "attachment:")
-		(mapcar (lambda (tag) (concat "tag:" tag)) all-tags)
-		(mapcar (lambda (tag) (concat "is:" tag)) all-tags)
-		(mapcar (lambda (mimetype) (concat "mimetype:" mimetype))
-			(mailcap-mime-types)))))
-    (let ((keymap (copy-keymap minibuffer-local-map))
-	  (current-query (cl-case major-mode
-			   (notmuch-search-mode (notmuch-search-get-query))
-			   (notmuch-show-mode (notmuch-show-get-query))
-			   (notmuch-tree-mode (notmuch-tree-get-query))))
-	  (minibuffer-completion-table
-	   (completion-table-dynamic
-	    (lambda (string)
-	      ;; generate a list of possible completions for the current input
-	      (cond
-	       ;; this ugly regexp is used to get the last word of the input
-	       ;; possibly preceded by a '('
-	       ((string-match "\\(^\\|.* (?\\)\\([^ ]*\\)$" string)
-		(mapcar (lambda (compl)
-			  (concat (match-string-no-properties 1 string) compl))
-			(all-completions (match-string-no-properties 2 string)
-					 completions)))
-	       (t (list string)))))))
-      ;; this was simpler than convincing completing-read to accept spaces:
-      (define-key keymap (kbd "TAB") 'minibuffer-complete)
-      (let ((history-delete-duplicates t))
-	(read-from-minibuffer prompt nil keymap nil
-			      'notmuch-search-history current-query nil)))))
+  (let* ((all-tags
+	  (mapcar (lambda (tag) (notmuch-escape-boolean-term tag))
+		  (process-lines notmuch-command "search" "--output=tags" "*")))
+	 (completions
+	  (append (list "folder:" "path:" "thread:" "id:" "date:" "from:" "to:"
+			"subject:" "attachment:")
+		  (mapcar (lambda (tag) (concat "tag:" tag)) all-tags)
+		  (mapcar (lambda (tag) (concat "is:" tag)) all-tags)
+		  (mapcar (lambda (mimetype) (concat "mimetype:" mimetype))
+			  (mailcap-mime-types))))
+	 (keymap (copy-keymap minibuffer-local-map))
+	 (current-query (cl-case major-mode
+			  (notmuch-search-mode (notmuch-search-get-query))
+			  (notmuch-show-mode (notmuch-show-get-query))
+			  (notmuch-tree-mode (notmuch-tree-get-query))))
+	 (minibuffer-completion-table
+	  (completion-table-dynamic
+	   (lambda (string)
+	     ;; Generate a list of possible completions for the current input.
+	     (cond
+	      ;; This ugly regexp is used to get the last word of the input
+	      ;; possibly preceded by a '('.
+	      ((string-match "\\(^\\|.* (?\\)\\([^ ]*\\)$" string)
+	       (mapcar (lambda (compl)
+			 (concat (match-string-no-properties 1 string) compl))
+		       (all-completions (match-string-no-properties 2 string)
+					completions)))
+	      (t (list string)))))))
+    ;; This was simpler than convincing completing-read to accept spaces:
+    (define-key keymap (kbd "TAB") 'minibuffer-complete)
+    (let ((history-delete-duplicates t))
+      (read-from-minibuffer prompt nil keymap nil
+			    'notmuch-search-history current-query nil))))
 
 (defun notmuch-search-get-query ()
   "Return the current query in this search buffer."
@@ -1042,12 +1041,12 @@ the configured default sort order."
 		     (if oldest-first
 			 "--sort=oldest-first"
 		       "--sort=newest-first")
-		     query))
-	      ;; Use a scratch buffer to accumulate partial output.
-	      ;; This buffer will be killed by the sentinel, which
-	      ;; should be called no matter how the process dies.
-	      (parse-buf (generate-new-buffer " *notmuch search parse*")))
-	  (process-put proc 'parse-buf parse-buf)
+		     query)))
+	  ;; Use a scratch buffer to accumulate partial output.
+	  ;; This buffer will be killed by the sentinel, which
+	  ;; should be called no matter how the process dies.
+	  (process-put proc 'parse-buf
+		       (generate-new-buffer " *notmuch search parse*"))
 	  (set-process-filter proc 'notmuch-search-process-filter)
 	  (set-process-query-on-exit-flag proc nil))))
     (run-hooks 'notmuch-search-hook)))