Signed-off-by: Damien Cassou <damien.cassou at gmail.com>
---
 emacs/notmuch-show.el   |    9 +++++----
 emacs/notmuch-tagger.el |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index ee94802..5a465ff 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -441,10 +441,11 @@ message at DEPTH in the current thread."
            (notmuch-show-clean-address (plist-get headers :From))
            " ("
            date
-           ") ("
-           (propertize (mapconcat 'identity tags " ")
-                       'face 'notmuch-tag-face)
-           ")\n")
+           ") "
+           (propertize
+            (notmuch-tagger-format-tags tags)
+            'face 'notmuch-tag-face)
+           "\n")
     (overlay-put (make-overlay start (point)) 'face 
'notmuch-message-summary-face)))

 (defun notmuch-show-insert-header (header header-value)
diff --git a/emacs/notmuch-tagger.el b/emacs/notmuch-tagger.el
index 0d4d471..243c636 100644
--- a/emacs/notmuch-tagger.el
+++ b/emacs/notmuch-tagger.el
@@ -44,12 +44,21 @@ test if the library is present before calling this 
function."
   (let ((tag (header-button-get button 'notmuch-tagger-tag)))
     (notmuch-tagger-goto-target tag)))

+(defun notmuch-tagger-body-button-action (button)
+  "Open `notmuch-search' for the tag referenced by BUTTON."
+  (let ((tag (button-get button 'notmuch-tagger-tag)))
+    (notmuch-tagger-goto-target tag)))
+
 (eval-after-load "header-button"
   '(define-button-type 'notmuch-tagger-header-button-type
      'supertype 'header
      'action    #'notmuch-tagger-header-button-action
      'follow-link t))

+(define-button-type 'notmuch-tagger-body-button-type
+  'action    #'notmuch-tagger-body-button-action
+  'follow-link t)
+
 (defun notmuch-tagger-really-make-header-link (tag)
    "Return a property list that presents a link to TAG.

@@ -73,6 +82,20 @@ if not."
       (notmuch-tagger-really-make-header-link tag)
     tag))

+(defun notmuch-tagger-make-body-link (tag)
+  "Return a property list that presents a link to TAG.
+The returned property list will not work in the header-line. For
+a link that works on the header-line, prefer
+`notmuch-tagger-make-header-link'."
+  (let ((button (copy-sequence tag)))
+    (make-text-button
+     button nil
+     'type 'notmuch-tagger-body-button-type
+     'notmuch-tagger-tag tag
+     'skip t ;; don't stop when using TAB
+     'help-echo (format "%s: Search other messages like this" tag))
+    button))
+
 (defun notmuch-tagger-format-tags-header-line (tags)
   "Format TAGS as a `mode-line-format' template.
 The result is suitable for inclusion in `header-line-format'."
@@ -83,5 +106,15 @@ The result is suitable for inclusion in 
`header-line-format'."
     " ")
    ")"))

+(defun notmuch-tagger-format-tags (tags)
+  "Format TAGS as a string suitable for insertion in a buffer.
+If the result of this function is to be used within the
+header-line, prefer `notmuch-tagger-format-tags-header-line'
+instead of this function."
+  (concat
+   "("
+   (mapconcat #'notmuch-tagger-make-body-link tags " ")
+   ")"))
+
 (provide 'notmuch-tagger)
 ;;; notmuch-tagger.el ends here
-- 
1.7.10.4

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