(shr-add-font): Use overlays for combining faces.

[gnus] / lisp / shr.el

diff --git a/lisp/shr.el b/lisp/shr.el
index f1dbfef..4a778b8 100644 (file)
--- a/lisp/shr.el
+++ b/lisp/shr.el
@@ -52,6 +52,7 @@ fit these criteria."
 
 (defvar shr-folding-mode nil)
 (defvar shr-state nil)
+(defvar shr-start nil)
 
 (defvar shr-width 70)
 
@@ -69,7 +70,8 @@ fit these criteria."
 
 ;;;###autoload
 (defun shr-insert-document (dom)
-  (let ((shr-state nil))
+  (let ((shr-state nil)
+       (shr-start nil))
     (shr-descend (shr-transform-dom dom))))
 
 (defun shr-descend (dom)
@@ -105,19 +107,20 @@ fit these criteria."
   (shr-fontize-cont cont 'strikethru))
 
 (defun shr-fontize-cont (cont type)
-  (let ((start (point)))
+  (let (shr-start)
     (shr-generic cont)
-    (shr-add-font start (point) type)))
+    (shr-add-font shr-start (point) type)))
 
 (defun shr-add-font (start end type)
-  (put-text-property start end 'face type))
+  (let ((overlay (make-overlay start end)))
+    (overlay-put overlay 'face type)))
 
 (defun shr-a (cont)
-  (let ((start (point))
-       (url (cdr (assq :href cont))))
+  (let ((url (cdr (assq :href cont)))
+       shr-start)
     (shr-generic cont)
     (widget-convert-button
-     'link start (point)
+     'link shr-start (point)
      :action 'shr-browse-url
      :url url
      :keymap widget-keymap
@@ -217,11 +220,16 @@ fit these criteria."
     (let (column)
       (dolist (elem (split-string text))
        (setq column (current-column))
-       (if (zerop column)
-           (insert elem)
+       (when (plusp column)
          (if (> (+ column (length elem) 1) shr-width)
-             (insert "\n" elem)
-           (insert " " elem))))))))
+             (insert "\n")
+           (insert " ")))
+       ;; The shr-start is a special variable that is used to pass
+       ;; upwards the first point in the buffer where the text really
+       ;; starts.
+       (unless shr-start
+         (setq shr-start (point)))
+       (insert elem))))))
 
 (defun shr-get-image-data (url)
   "Get image data for URL.