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+ Fri, 14 Feb 2014 01:15:32 -0800 (PST)\r
+From: Mark Walters <markwalters1009@gmail.com>\r
+To: notmuch@notmuchmail.org,\r
+ Austin Clements <amdragon@MIT.EDU>\r
+Subject: [WIP Patch 4/7] emacs: show: mark tags changed since buffer loaded\r
+Date: Fri, 14 Feb 2014 09:15:16 +0000\r
+Message-Id: <1392369319-24508-5-git-send-email-markwalters1009@gmail.com>\r
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+\r
+This allows (and requires) the original-tags to be passed along with\r
+the current-tags to be passed to notmuch-tag-format-tags. This allows\r
+the tag formatting to show added and deleted tags.By default a removed\r
+tag is displayed with strike-through in red (if strike-through is not\r
+available, eg on a terminal, inverse video is used instead) and an\r
+added tag is displayed underlined in green.\r
+\r
+If the caller does not wish to use the new feature it can pass\r
+current-tags for both arguments and, at this point, we do exactly that\r
+in the three callers of this function.\r
+\r
+Note, we cannot tidily allow original-tags to be optional because we would\r
+need to distinguish nil meaning "we are not specifying original-tags"\r
+from nil meaning there were no original-tags (an empty list).\r
+\r
+We use this in subsequent patches to make it clear when a message was\r
+unread when you first loaded a show buffer (previously the unread tag\r
+could be removed before a user realised that it had been unread).\r
+\r
+The code adds into the existing tag formatting code. The user can\r
+specify exactly how a tag should be displayed normally, when deleted,\r
+or when added. For convenience an entry for the empty string in the\r
+notmuch-tag-formats (and the corresponding notmuch-tag-deleted-formats\r
+notmuch-tag-added-formats) is applied to all tags which do not have an\r
+explicit match.\r
+\r
+This means that a user can tell notmuch not to show deleted tags at\r
+all by setting notmuch-tag-deleted-formats to\r
+'(("" nil))\r
+or not to show any deleted tags except "unread" by setting it to\r
+'(("" nil)\r
+ ("unread" (propertize tag 'face '(strike-through "red"))))\r
+\r
+All the variables are customizable; however, more complicated cases\r
+like changing the face depending on the type of display will require\r
+custom lisp.\r
+\r
+Currently this overrides notmuch-tag-deleted-formats for the tests\r
+setting it to '(("" nil)) so that they get removed from the display\r
+and, thus, all tests still pass.\r
+---\r
+ emacs/notmuch-show.el | 4 +-\r
+ emacs/notmuch-tag.el | 65 ++++++++++++++++++++++++++++++++++++++----------\r
+ emacs/notmuch-tree.el | 2 +-\r
+ emacs/notmuch.el | 2 +-\r
+ test/test-lib.el | 5 ++++\r
+ 5 files changed, 60 insertions(+), 18 deletions(-)\r
+\r
+diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el\r
+index 1ac80ca..1ce56f9 100644\r
+--- a/emacs/notmuch-show.el\r
++++ b/emacs/notmuch-show.el\r
+@@ -344,7 +344,7 @@ operation on the contents of the current buffer."\r
+ (if (re-search-forward "(\\([^()]*\\))$" (line-end-position) t)\r
+ (let ((inhibit-read-only t))\r
+ (replace-match (concat "("\r
+- (notmuch-tag-format-tags tags)\r
++ (notmuch-tag-format-tags tags tags)\r
+ ")"))))))\r
+ \r
+ (defun notmuch-clean-address (address)\r
+@@ -423,7 +423,7 @@ message at DEPTH in the current thread."\r
+ " ("\r
+ date\r
+ ") ("\r
+- (notmuch-tag-format-tags tags)\r
++ (notmuch-tag-format-tags tags tags)\r
+ ")\n")\r
+ (overlay-put (make-overlay start (point)) 'face 'notmuch-message-summary-face)))\r
+ \r
+diff --git a/emacs/notmuch-tag.el b/emacs/notmuch-tag.el\r
+index add60a3..812a0f4 100644\r
+--- a/emacs/notmuch-tag.el\r
++++ b/emacs/notmuch-tag.el\r
+@@ -192,36 +192,73 @@ This can be used with `notmuch-tag-format-image-data'."\r
+ </g>\r
+ </svg>")\r
+ \r
+-(defun notmuch-tag-format-tag (tag)\r
+- "Format TAG by looking into `notmuch-tag-formats'."\r
+- (let ((formatted (gethash tag notmuch-tag--format-cache 'missing)))\r
++(defun notmuch-tag-format-tag-by-state (tag formatted-tag tag-state)\r
++ "Format TAG by looking into the appropriate `notmuch-tag-formats`.\r
++\r
++Applies formats for TAG from the appropriate one of\r
++`notmuch-tag-formats`, `notmuch-tag-deleted-formats` and\r
++`notmuch-tag-added-formats` based on TAG-STATE to the partially\r
++formatted tag FORMATTED-TAG."\r
++ (let ((formatted (gethash (cons tag tag-state) notmuch-tag--format-cache 'missing)))\r
+ (when (eq formatted 'missing)\r
+- (let* ((formats\r
++ (let* ((tag-formats (cond ((null tag-state) notmuch-tag-formats)\r
++ ((eq 'deleted tag-state) notmuch-tag-deleted-formats)\r
++ ((eq 'added tag-state) notmuch-tag-added-formats)))\r
++ (formats\r
+ (save-match-data\r
+- (assoc* tag notmuch-tag-formats\r
++ (assoc* tag tag-formats\r
+ :test (lambda (tag key)\r
+ (and (eq (string-match key tag) 0)\r
+ (= (match-end 0) (length tag))))))))\r
+ (setq formatted\r
+ (cond\r
+- ((null formats) ;; - Tag not in `notmuch-tag-formats',\r
+- tag) ;; the format is the tag itself.\r
++ ((null formats) ;; - Tag not in `tag-formats',\r
++ formatted-tag) ;; the format is the tag itself.\r
+ ((null (cdr formats)) ;; - Tag was deliberately hidden,\r
+ nil) ;; no format must be returned\r
+- (t ;; - Tag was found and has formats,\r
+- (let ((tag tag)) ;; we must apply all the formats.\r
++ (t\r
++ ;; Tag was found and has formats, we must apply all\r
++ ;; the formats. FORMATTED-TAG may be null so treat\r
++ ;; that as a special case.\r
++ (let ((tag (or formatted-tag "")))\r
+ (dolist (format (cdr formats) tag)\r
+- (setq tag (eval format)))))))\r
+- (puthash tag formatted notmuch-tag--format-cache)))\r
++ (setq tag (eval format)))\r
++ (if (and (null formatted-tag)\r
++ (equal tag ""))\r
++ nil\r
++ tag)))))\r
++ (puthash (cons tag tag-state) formatted notmuch-tag--format-cache)))\r
+ formatted))\r
+ \r
+-(defun notmuch-tag-format-tags (tags &optional face)\r
++(defun notmuch-tag-format-tag (tags orig-tags tag)\r
++ "Format TAG by looking into `notmuch-tag-formats'.\r
++\r
++TAGS and ORIG-TAGS are lists of the current tags and the original\r
++tags; tags which have been deleted (i.e., are in ORIG-TAGS but\r
++are not in TAGS) are shown using formats from\r
++`notmuch-tag-deleted-formats'; tags which have been added (i.e.,\r
++are in TAGS but are not in ORIG-TAGS) are shown using formats\r
++from `notmuch-tag-added-formats' and tags which have not been\r
++changed (the normal case) are shown using formats from\r
++`notmuch-tag-formats'"\r
++ (let* ((formatted-tag (notmuch-tag-format-tag-by-state tag tag nil)))\r
++ (cond ((not (member tag tags))\r
++ (notmuch-tag-format-tag-by-state tag formatted-tag 'deleted))\r
++ ((not (member tag orig-tags))\r
++ (notmuch-tag-format-tag-by-state tag formatted-tag 'added))\r
++ (t\r
++ formatted-tag))))\r
++\r
++(defun notmuch-tag-format-tags (tags orig-tags &optional face)\r
+ "Return a string representing formatted TAGS."\r
+- (let ((face (or face 'notmuch-tag-face)))\r
++ (let ((face (or face 'notmuch-tag-face))\r
++ (all-tags (sort (delete-dups (append tags orig-tags nil)) #'string<)))\r
+ (notmuch-combine-face-text-property-string\r
+ (mapconcat #'identity\r
+ ;; nil indicated that the tag was deliberately hidden\r
+- (delq nil (mapcar #'notmuch-tag-format-tag tags))\r
++ (delq nil (mapcar\r
++ (apply-partially #'notmuch-tag-format-tag tags orig-tags)\r
++ all-tags))\r
+ " ")\r
+ face\r
+ t)))\r
+diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el\r
+index 4f2ac02..b37e2cd 100644\r
+--- a/emacs/notmuch-tree.el\r
++++ b/emacs/notmuch-tree.el\r
+@@ -704,7 +704,7 @@ unchanged ADDRESS if parsing fails."\r
+ (face (if match\r
+ 'notmuch-tree-match-tag-face\r
+ 'notmuch-tree-no-match-tag-face)))\r
+- (format format-string (notmuch-tag-format-tags tags face)))))))\r
++ (format format-string (notmuch-tag-format-tags tags tags face)))))))\r
+ \r
+ (defun notmuch-tree-format-field-list (field-list msg)\r
+ "Format fields of MSG according to FIELD-LIST and return string"\r
+diff --git a/emacs/notmuch.el b/emacs/notmuch.el\r
+index 0471750..1436e5a 100644\r
+--- a/emacs/notmuch.el\r
++++ b/emacs/notmuch.el\r
+@@ -754,7 +754,7 @@ non-authors is found, assume that all of the authors match."\r
+ \r
+ ((string-equal field "tags")\r
+ (let ((tags (plist-get result :tags)))\r
+- (insert (format format-string (notmuch-tag-format-tags tags)))))))\r
++ (insert (format format-string (notmuch-tag-format-tags tags tags)))))))\r
+ \r
+ (defun notmuch-search-show-result (result &optional pos)\r
+ "Insert RESULT at POS or the end of the buffer if POS is null."\r
+diff --git a/test/test-lib.el b/test/test-lib.el\r
+index 37fcb3d..437f83f 100644\r
+--- a/test/test-lib.el\r
++++ b/test/test-lib.el\r
+@@ -165,3 +165,8 @@ nothing."\r
+ \r
+ (t\r
+ (notmuch-test-report-unexpected output expected)))))\r
++\r
++;; For historical reasons, we hide deleted tags by default in the test\r
++;; suite\r
++(setq notmuch-tag-deleted-formats\r
++ '((".*" nil)))\r
+-- \r
+1.7.9.1\r
+\r
projects / notmuch-archives.git / commitdiff