X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=emacs%2Fnotmuch-tag.el;h=42c425ed4624572dad29dad94f672396b06cc365;hp=22a603fcf04ab279a38acba548f0bf26a4de5bc4;hb=7023466ece21b43a62dc0a2502e84bea78b1501c;hpb=45444eebe5c618d08ab168c49201bcd3cc235506 diff --git a/emacs/notmuch-tag.el b/emacs/notmuch-tag.el index 22a603fc..42c425ed 100644 --- a/emacs/notmuch-tag.el +++ b/emacs/notmuch-tag.el @@ -34,17 +34,21 @@ (notmuch-tag-format-image-data tag (notmuch-tag-star-icon)))) "Custom formats for individual tags. -This gives a list that maps from tag names to lists of formatting -expressions. The car of each element gives a tag name and the -cdr gives a list of Elisp expressions that modify the tag. If -the list is empty, the tag will simply be hidden. Otherwise, -each expression will be evaluated in order: for the first -expression, the variable `tag' will be bound to the tag name; for -each later expression, the variable `tag' will be bound to the -result of the previous expression. In this way, each expression -can build on the formatting performed by the previous expression. -The result of the last expression will displayed in place of the -tag. +This is an association list that maps from tag name regexps to +lists of formatting expressions. The first entry whose car +regexp-matches a tag will be used to format that tag. The regexp +is implicitly anchored, so to match a literal tag name, just use +that tag name (if it contains special regexp characters like +\".\" or \"*\", these have to be escaped). The cdr of the +matching entry gives a list of Elisp expressions that modify the +tag. If the list is empty, the tag will simply be hidden. +Otherwise, each expression will be evaluated in order: for the +first expression, the variable `tag' will be bound to the tag +name; for each later expression, the variable `tag' will be bound +to the result of the previous expression. In this way, each +expression can build on the formatting performed by the previous +expression. The result of the last expression will displayed in +place of the tag. For example, to replace a tag with another string, simply use that string as a formatting expression. To change the foreground @@ -56,7 +60,7 @@ with images." :group 'notmuch-search :group 'notmuch-show - :type '(alist :key-type (string :tag "Tag") + :type '(alist :key-type (regexp :tag "Tag") :extra-offset -3 :value-type (radio :format "%v" @@ -135,28 +139,55 @@ This can be used with `notmuch-tag-format-image-data'." ") +(defvar notmuch-tag--format-cache (make-hash-table :test 'equal) + "Cache of tag format lookup. Internal to `notmuch-tag-format-tag'.") + +(defun notmuch-tag-clear-cache () + "Clear the internal cache of tag formats." + (clrhash notmuch-tag--format-cache)) + (defun notmuch-tag-format-tag (tag) - "Format TAG by looking into `notmuch-tag-formats'." - (let ((formats (assoc tag notmuch-tag-formats))) - (cond - ((null formats) ;; - Tag not in `notmuch-tag-formats', - tag) ;; the format is the tag itself. - ((null (cdr formats)) ;; - Tag was deliberately hidden, - nil) ;; no format must be returned - (t ;; - Tag was found and has formats, - (let ((tag tag)) ;; we must apply all the formats. - (dolist (format (cdr formats) tag) - (setq tag (eval format)))))))) - -(defun notmuch-tag-format-tags (tags) + "Format TAG by according to `notmuch-tag-formats'. + +Callers must ensure that the tag format cache has been recently cleared +via `notmuch-tag-clear-cache' before using this function. For example, +it would be appropriate to clear the cache just prior to filling a +buffer that uses formatted tags." + + (let ((formatted (gethash tag notmuch-tag--format-cache 'missing))) + (when (eq formatted 'missing) + (let* ((formats + (save-match-data + ;; Don't use assoc-default since there's no way to + ;; distinguish a missing key from a present key with a + ;; null cdr:. + (assoc* tag notmuch-tag-formats + :test (lambda (tag key) + (and (eq (string-match key tag) 0) + (= (match-end 0) (length tag)))))))) + (setq formatted + (cond + ((null formats) ;; - Tag not in `notmuch-tag-formats', + tag) ;; the format is the tag itself. + ((null (cdr formats)) ;; - Tag was deliberately hidden, + nil) ;; no format must be returned + (t ;; - Tag was found and has formats, + (let ((tag tag)) ;; we must apply all the formats. + (dolist (format (cdr formats) tag) + (setq tag (eval format))))))) + (puthash tag formatted notmuch-tag--format-cache))) + formatted)) + +(defun notmuch-tag-format-tags (tags &optional face) "Return a string representing formatted TAGS." - (notmuch-combine-face-text-property-string - (mapconcat #'identity - ;; nil indicated that the tag was deliberately hidden - (delq nil (mapcar #'notmuch-tag-format-tag tags)) - " ") - 'notmuch-tag-face - t)) + (let ((face (or face 'notmuch-tag-face))) + (notmuch-apply-face + (mapconcat #'identity + ;; nil indicated that the tag was deliberately hidden + (delq nil (mapcar #'notmuch-tag-format-tag tags)) + " ") + face + t))) (defcustom notmuch-before-tag-hook nil "Hooks that are run before tags of a message are modified. @@ -230,8 +261,16 @@ initial input in the minibuffer." (set-keymap-parent map crm-local-completion-map) (define-key map " " 'self-insert-command) map))) - (delete "" (completing-read-multiple prompt - tag-list nil nil initial-input + (delete "" (completing-read-multiple + prompt + ;; Append the separator to each completion so when the + ;; user completes a tag they can immediately begin + ;; entering another. `completing-read-multiple' + ;; ultimately splits the input on crm-separator, so we + ;; don't need to strip this back off (we just need to + ;; delete "empty" entries caused by trailing spaces). + (mapcar (lambda (tag-op) (concat tag-op crm-separator)) tag-list) + nil nil initial-input 'notmuch-read-tag-changes-history)))) (defun notmuch-update-tags (tags tag-changes) @@ -253,6 +292,12 @@ from TAGS if present." (error "Changed tag must be of the form `+this_tag' or `-that_tag'"))))) (sort result-tags 'string<))) +(defconst notmuch-tag-argument-limit 1000 + "Use batch tagging if the tagging query is longer than this. + +This limits the length of arguments passed to the notmuch CLI to +avoid system argument length limits and performance problems.") + (defun notmuch-tag (query tag-changes) "Add/remove tags in TAG-CHANGES to messages matching QUERY. @@ -271,8 +316,13 @@ notmuch-after-tag-hook will be run." tag-changes) (unless (null tag-changes) (run-hooks 'notmuch-before-tag-hook) - (apply 'notmuch-call-notmuch-process "tag" - (append tag-changes (list "--" query))) + (if (<= (length query) notmuch-tag-argument-limit) + (apply 'notmuch-call-notmuch-process "tag" + (append tag-changes (list "--" query))) + ;; Use batch tag mode to avoid argument length limitations + (let ((batch-op (concat (mapconcat #'notmuch-hex-encode tag-changes " ") + " -- " query))) + (notmuch-call-notmuch-process :stdin-string batch-op "tag" "--batch"))) (run-hooks 'notmuch-after-tag-hook))) (defun notmuch-tag-change-list (tags &optional reverse)