Merge pull request #261 from vermiculus/meta-tags

Meta tags

1 files changed, 21 insertions, 5 deletions

diff --git a/sx-tag.el b/sx-tag.el
index 316226b..3c00ae2 100644
--- a/sx-tag.el
+++ b/sx-tag.el
@@ -142,19 +142,35 @@ tags."
 
 
 ;;; Printing
-(defun sx-tag--format (tag)
-  "Format and return TAG for display."
+(defun sx-tag--format (tag &optional meta)
+  "Format and return TAG for display.
+If META is non-nil, the tag is for the meta site."
   (with-temp-buffer
-    (sx-tag--insert tag)
+    (sx-tag--insert tag meta)
     (buffer-string)))
 
-(defun sx-tag--insert (tag)
-  "Insert TAG button."
+(defun sx-tag--insert (tag &optional meta)
+  "Insert TAG button.
+If META is non-nil, the tag is for the meta site."
   (insert-text-button (concat "[" tag "]")
                       'sx-button-copy tag
                       'sx-tag tag
+                      'sx-tag-meta meta
                       :type 'sx-button-tag))
 
+(defun sx-tag--format-tags (tags &optional site)
+  "Format and concatenate a sequence of TAGS.
+Returns a string of all tags in TAGS, separated by a space.
+
+SITE is the site to which the tags refer, it is only used to
+decide whether they are main or meta tags.  SITE can also be t or
+nil, which respectively indicate meta and main."
+  (let ((is-meta
+         (if (stringp site) (string-match (rx string-start "meta.") site)
+           site)))
+    (mapconcat (lambda (tag) (sx-tag--format tag is-meta))
+               tags " ")))
+
 (provide 'sx-tag)
 ;;; sx-tag.el ends here