From b31b26b48958fed0162d58c76dc55b2aeca22b66 Mon Sep 17 00:00:00 2001
From: Gnus developers <ding@gnus.org>
Date: Mon, 6 Dec 2010 22:16:10 +0000
Subject: [PATCH] Merge changes made in Gnus trunk.

shr.el (shr-render-td): Render td content with shr-descend, so style will be applied to <td> too.
 (shr-colorize-region): Colorize region even if we only have a background.
 (shr-tag-body): Fix color and background color inheritance.
 (shr-tag-body): Do not recolorize after shr-generic.
 (shr-tag-font): Let shr-generic colorize via inheritance.
shr.el (shr-descend): Only colorise something if we have a node that sets colors.
gnus-int.el (gnus-request-thread): Rework to take a header instead of a Message-ID to avoid having nnimap depend on gnus-sum.
shr.el (shr-tag-font): Colorize the region.
 (shr-tag-body): Ditto.
 (shr-tag-font): Actually let the styles be inherited instead of overwriting them.
 (shr-tag-font): Get the background color right.
 (shr-tag-style): Ignore all <style> tags for the moment.
---
 lisp/gnus/ChangeLog   | 24 ++++++++++++++++++++++++
 lisp/gnus/gnus-int.el |  7 +++----
 lisp/gnus/gnus-sum.el |  2 +-
 lisp/gnus/nnimap.el   | 10 ++++------
 lisp/gnus/shr.el      | 41 ++++++++++++++++++++++++-----------------
 5 files changed, 56 insertions(+), 28 deletions(-)

diff --git a/lisp/gnus/ChangeLog b/lisp/gnus/ChangeLog
index f36598780b4..ef4a7637b6d 100644
--- a/lisp/gnus/ChangeLog
+++ b/lisp/gnus/ChangeLog
@@ -1,3 +1,27 @@
+2010-12-06  Lars Magne Ingebrigtsen  <larsi@gnus.org>
+
+	* shr.el (shr-tag-font): Colorize the region.
+	(shr-tag-body): Ditto.
+	(shr-tag-font): Actually let the styles be inherited instead of
+	overwriting them.
+	(shr-tag-font): Get the background color right.
+	(shr-tag-style): Ignore all <style> tags for the moment.
+
+	* gnus-int.el (gnus-request-thread): Rework to take a header instead of
+	a Message-ID to avoid having nnimap depend on gnus-sum.
+
+	* shr.el (shr-descend): Only colorize something if we have a node that
+	sets colors.
+
+2010-12-06  Julien Danjou  <julien@danjou.info>
+
+	* shr.el (shr-render-td): Render td content with shr-descend, so style
+	will be applied to <td> too.
+	(shr-colorize-region): Colorize region even if we only have a background.
+	(shr-tag-body): Fix color and background color inheritance.
+	Do not recolorize after shr-generic.
+	(shr-tag-font): Let shr-generic colorize via inheritance.
+
 2010-12-06  Katsumi Yamaoka  <yamaoka@jpl.org>
 
 	* shr.el (shr-find-fill-point): Don't regard apostrophe as kinsoku-bol.
diff --git a/lisp/gnus/gnus-int.el b/lisp/gnus/gnus-int.el
index 767ac2e9fc5..43284540125 100644
--- a/lisp/gnus/gnus-int.el
+++ b/lisp/gnus/gnus-int.el
@@ -503,12 +503,11 @@ If BUFFER, insert the article in that group."
 	     article (gnus-group-real-name group)
 	     (nth 1 gnus-command-method) buffer)))
 
-(defun gnus-request-thread (id)
-  "Request the headers in the thread containing the article
-specified by Message-ID id."
+(defun gnus-request-thread (header)
+  "Request the headers in the thread containing the article specified by HEADER."
   (let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
     (funcall (gnus-get-function gnus-command-method 'request-thread)
-	     id)))
+	     header)))
 
 (defun gnus-warp-to-article ()
   "Warps from an article in a virtual group to the article in its
diff --git a/lisp/gnus/gnus-sum.el b/lisp/gnus/gnus-sum.el
index 2bb39af3fb8..1bb4b4a6895 100644
--- a/lisp/gnus/gnus-sum.el
+++ b/lisp/gnus/gnus-sum.el
@@ -8880,7 +8880,7 @@ variable."
 	   'list gnus-newsgroup-headers
 	   (if (gnus-check-backend-function
 		'request-thread gnus-newsgroup-name)
-	       (gnus-request-thread id)
+	       (gnus-request-thread (gnus-summary-article-header))
 	     (let* ((last (if (numberp limit)
 			      (min (+ (mail-header-number
 				       (gnus-summary-article-header))
diff --git a/lisp/gnus/nnimap.el b/lisp/gnus/nnimap.el
index 4b4793dcfee..c7d61399dec 100644
--- a/lisp/gnus/nnimap.el
+++ b/lisp/gnus/nnimap.el
@@ -47,9 +47,6 @@
 (require 'nnmail)
 (require 'proto-stream)
 
-(eval-when-compile
-  (require 'gnus-sum))
-
 (autoload 'auth-source-forget-user-or-password "auth-source")
 (autoload 'auth-source-user-or-password "auth-source")
 
@@ -1426,9 +1423,10 @@ textual parts.")
   (setq nnimap-status-string "Read-only server")
   nil)
 
-(deffoo nnimap-request-thread (id)
-  (let* ((refs (split-string
-		(or (mail-header-references (gnus-summary-article-header))
+(deffoo nnimap-request-thread (header)
+  (let* ((id (mail-header-id header))
+	 (refs (split-string
+		(or (mail-header-references header)
 		    "")))
 	 (cmd (let ((value
 		     (format
diff --git a/lisp/gnus/shr.el b/lisp/gnus/shr.el
index 4c4f47e0225..fafe3d94dea 100644
--- a/lisp/gnus/shr.el
+++ b/lisp/gnus/shr.el
@@ -194,19 +194,19 @@ redirects somewhere else."
 	(style (cdr (assq :style (cdr dom))))
 	(shr-stylesheet shr-stylesheet)
 	(start (point)))
-    (when (and style
-	       (string-match "color" style))
-      (setq shr-stylesheet (nconc (shr-parse-style style)
-				  shr-stylesheet)))
+    (when style
+      (if (string-match "color" style)
+	  (setq shr-stylesheet (nconc (shr-parse-style style)
+				      shr-stylesheet))
+	(setq style nil)))
     (if (fboundp function)
 	(funcall function (cdr dom))
       (shr-generic (cdr dom)))
-    (let ((color (cdr (assq 'color shr-stylesheet)))
-	  (background (cdr (assq 'background-color
-				 shr-stylesheet))))
-      (when (and shr-stylesheet
-		 (or color background))
-	(shr-colorize-region start (point) color background)))))
+    ;; If style is set, then this node has set the color.
+    (when style
+      (shr-colorize-region start (point)
+			   (cdr (assq 'color shr-stylesheet))
+			   (cdr (assq 'background-color shr-stylesheet))))))
 
 (defun shr-generic (cont)
   (dolist (sub cont)
@@ -586,7 +586,7 @@ ones, in case fg and bg are nil."
                (shr-color-visible bg fg)))))))
 
 (defun shr-colorize-region (start end fg &optional bg)
-  (when fg
+  (when (or fg bg)
     (let ((new-colors (shr-color-check fg bg)))
       (when new-colors
 	(shr-put-color start end :foreground (cadr new-colors))
@@ -633,11 +633,14 @@ ones, in case fg and bg are nil."
   (let* ((start (point))
 	 (fgcolor (cdr (assq :fgcolor cont)))
 	 (bgcolor (cdr (assq :bgcolor cont)))
-	 (shr-stylesheet (list (cons :color fgcolor)
-			       (cons :background-color bgcolor))))
+	 (shr-stylesheet (list (cons 'color fgcolor)
+			       (cons 'background-color bgcolor))))
     (shr-generic cont)
     (shr-colorize-region start (point) fgcolor bgcolor)))
 
+(defun shr-tag-style (cont)
+  )
+
 (defun shr-tag-p (cont)
   (shr-ensure-paragraph)
   (shr-indent)
@@ -837,10 +840,14 @@ ones, in case fg and bg are nil."
   (shr-heading cont 'bold 'underline))
 
 (defun shr-tag-font (cont)
-  (let ((start (point))
-        (color (cdr (assq :color cont))))
+  (let* ((start (point))
+         (color (cdr (assq :color cont)))
+         (shr-stylesheet (nconc (list (cons 'color color))
+				shr-stylesheet)))
     (shr-generic cont)
-    (shr-colorize-region start (point) color)))
+    (when color
+      (shr-colorize-region start (point) color
+			   (cdr (assq 'background-color shr-stylesheet))))))
 
 ;;; Table rendering algorithm.
 
@@ -1040,7 +1047,7 @@ ones, in case fg and bg are nil."
 	  (insert cache)
 	(let ((shr-width width)
 	      (shr-indentation 0))
-	  (shr-generic cont))
+	  (shr-descend (cons 'td cont)))
 	(delete-region
 	 (point)
 	 (+ (point)
-- 
2.39.2