Sorry, I was a little trigger-happy on the send. A few more comments below.
Quoth myself on Nov 20 at 12:13 am: > Quoth Damien Cassou on Nov 18 at 8:18 pm: > > Signed-off-by: Damien Cassou <damien.cassou at gmail.com> > > --- > > emacs/notmuch-show.el | 24 +++++++++++++++++++++--- > > emacs/notmuch-tagger.el | 44 ++++++++++++++++++++++++++++++++++++++++++++ > > 2 files changed, 65 insertions(+), 3 deletions(-) > > create mode 100644 emacs/notmuch-tagger.el > > > > diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el > > index 5b3e70e..988e27c 100644 > > --- a/emacs/notmuch-show.el > > +++ b/emacs/notmuch-show.el > > @@ -36,6 +36,7 @@ > > (require 'notmuch-mua) > > (require 'notmuch-crypto) > > (require 'notmuch-print) > > +(require 'notmuch-tagger) > > > > (declare-function notmuch-call-notmuch-process "notmuch" (&rest args)) > > (declare-function notmuch-fontify-headers "notmuch" nil) > > @@ -1121,11 +1122,28 @@ function is used." > > > > (jit-lock-register #'notmuch-show-buttonise-links) > > > > - ;; Set the header line to the subject of the first message. > > - (setq header-line-format (notmuch-show-strip-re > > (notmuch-show-get-subject))) > > - > > + (notmuch-show-update-header-line) > > (run-hooks 'notmuch-show-hook)))) > > > > +(defun notmuch-show-thread-tags () > > + "Return the list of tags for the current thread." > > + (let ((tags (list))) > > + (notmuch-show-mapc (lambda () > > + (mapcar (lambda (elt) > > + ;; Avoid adding duplicate tags > > + (add-to-list 'tags elt)) > > + (notmuch-show-get-tags)))) > > + tags)) > > + > > +(defun notmuch-show-update-header-line () > > + "Make the header-line show the thread's subject and tags." > > + (let ((thread-subject (notmuch-show-strip-re > > (notmuch-show-get-subject)))) > > + (setq header-line-format > > + (list > > + thread-subject > > + " " > > + (notmuch-tagger-present-tags-header-line > > (notmuch-show-thread-tags)))))) > > + > > (defun notmuch-show-capture-state () > > "Capture the state of the current buffer. > > > > diff --git a/emacs/notmuch-tagger.el b/emacs/notmuch-tagger.el > > new file mode 100644 > > index 0000000..5ca190e > > --- /dev/null > > +++ b/emacs/notmuch-tagger.el > > @@ -0,0 +1,44 @@ > > +;; notmuch-tagger.el --- Library to improve the way tags are displayed > > +;; > > +;; Copyright ? Damien Cassou > > +;; > > +;; This file is part of Notmuch. > > +;; > > +;; Notmuch is free software: you can redistribute it and/or modify it > > +;; under the terms of the GNU General Public License as published by > > +;; the Free Software Foundation, either version 3 of the License, or > > +;; (at your option) any later version. > > +;; > > +;; Notmuch is distributed in the hope that it will be useful, but > > +;; WITHOUT ANY WARRANTY; without even the implied warranty of > > +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > > +;; General Public License for more details. > > +;; > > +;; You should have received a copy of the GNU General Public License > > +;; along with Notmuch. If not, see <http://www.gnu.org/licenses/>. > > +;; > > +;; Authors: Damien Cassou <damien.cassou at gmail.com> > > +;;; Commentary: > > +;; > > +;;; Code: > > +;; > > +(defun notmuch-tagger-separate-elems (list sep) > > notmuch-tagger-intersperse? > > This could also reasonably go in notmuch-lib.el as a general utility. > > (How do neither Elisp nor 'cl have an intersperse?) > > > + "Return a list with all elements of LIST separated by SEP." > > + (let ((first t) > > + (res nil)) > > + (dolist (elt (reverse list) res) > > (dolist (elt list (nreverse res)) ...) to save a list copy? > > > + (unless first > > + (push sep res)) > > + (setq first nil) > > + (push elt res)))) > > + > > +(defun notmuch-tagger-present-tags-header-line (tags) notmuch-tagger-format-tags-header-line? It doesn't actually present them (though "format" isn't great either.) > > + "Return a property list to present TAGS in emacs header-line." This doesn't return a property list, it returns a mode-line-format template. Maybe something like, "Format TAGS as a mode-line-format template. The result is suitable for inclusion in `header-line-format' or `mode-line-format'." (Is it actually suitable for mode-line-format or do header-line buttons really only work in the header line?) > > + (list > > + "(" > > + (notmuch-tagger-separate-elems tags " ") > > + ")")) > > + > > + > > +(provide 'notmuch-tagger) > > +;;; notmuch-tagger.el ends here