Hide bodies of message that have already been read.

Also hide all markers.

From here, all we really need for legibility is the following:

  * Hide away citations and signatures

  * Call out the one-line summary some way, (larger font size?)

  * Add nesting for replies

notmuch.c

@@ -952,10 +952,11 @@ show_message_part (GMimeObject *part, int *part_count)
 	const char *filename = g_mime_part_get_filename (GMIME_PART (part));
 	content_type = g_mime_object_get_content_type (GMIME_OBJECT (part));
 
-	printf ("\fattachment{ ID: %d, Content-type: %s, ",
+	printf ("\fattachment{ ID: %d, Content-type: %s\n",
 		*part_count,
 		g_mime_content_type_to_string (content_type));
-	printf ("Filename: %s ", filename);
+	printf ("Attachment: %s (%s)\n", filename,
+		g_mime_content_type_to_string (content_type));
 	printf ("\fattachment}\n");
 
 	return;
@@ -977,6 +978,11 @@ show_message_part (GMimeObject *part, int *part_count)
 	if (wrapper)
 	    g_mime_data_wrapper_write_to_stream (wrapper, stream);
     }
+    else
+    {
+	printf ("Non-text part: %s\n",
+		g_mime_content_type_to_string (content_type));
+    }
 
     printf ("\fpart}\n");
 
@@ -1032,6 +1038,25 @@ show_message_body (const char *filename)
     return ret;
 }
 
+static int
+_message_is_unread (notmuch_message_t *message)
+{
+    notmuch_tags_t *tags;
+    const char *tag;
+
+    for (tags = notmuch_message_get_tags (message);
+	 notmuch_tags_has_more (tags);
+	 notmuch_tags_advance (tags))
+    {
+	tag = notmuch_tags_get (tags);
+
+	if (strcmp (tag, "unread") == 0)
+	    return 1;
+    }
+
+    return 0;
+}
+
 static int
 show_command (void *ctx, unused (int argc), unused (char *argv[]))
 {
@@ -1042,6 +1067,7 @@ show_command (void *ctx, unused (int argc), unused (char *argv[]))
     notmuch_messages_t *messages;
     notmuch_message_t *message;
     int ret = 0;
+    int unread;
 
     const char *headers[] = {
 	"Subject", "From", "To", "Cc", "Bcc", "Date"
@@ -1080,8 +1106,11 @@ show_command (void *ctx, unused (int argc), unused (char *argv[]))
 	 notmuch_messages_advance (messages))
     {
 	message = notmuch_messages_get (messages);
+	unread = _message_is_unread (message);
 
-	printf ("\fmessage{\n");
+	printf ("\fmessage{ ID: %s %s\n",
+		notmuch_message_get_message_id (message),
+		unread ? "unread" : "");
 
 	printf ("\fheader{\n");
 
@@ -1095,9 +1124,12 @@ show_command (void *ctx, unused (int argc), unused (char *argv[]))
 	}
 
 	printf ("\fheader}\n");
+	printf ("\fbody{\n");
 
 	show_message_body (notmuch_message_get_filename (message));
 
+	printf ("\fbody}\n");
+
 	printf ("\fmessage}\n");
 
 	notmuch_message_destroy (message);

notmuch.el

@@ -33,6 +33,7 @@
 
 (defvar notmuch-show-mode-map
   (let ((map (make-sparse-keymap)))
+    (define-key map "b" 'notmuch-show-toggle-body-read-visible)
     (define-key map "h" 'notmuch-show-toggle-headers-visible)
     (define-key map "n" 'notmuch-show-next-message)
     (define-key map "p" 'notmuch-show-previous-message)
@@ -46,7 +47,13 @@
 (defvar notmuch-show-message-end-regexp      "message}")
 (defvar notmuch-show-header-begin-regexp     "header{")
 (defvar notmuch-show-header-end-regexp       "header}")
-
+(defvar notmuch-show-body-begin-regexp       "body{")
+(defvar notmuch-show-body-end-regexp         "body}")
+(defvar notmuch-show-attachment-begin-regexp "attachment{")
+(defvar notmuch-show-attachment-end-regexp   "attachment}")
+(defvar notmuch-show-part-begin-regexp       "part{")
+(defvar notmuch-show-part-end-regexp         "part}")
+(defvar notmuch-show-marker-regexp "\\(message\\|header\\|body\\|attachment\\|part\\)[{}].*$")
 (defvar notmuch-show-headers-visible t)
 
 (defun notmuch-show-next-message ()
@@ -55,8 +62,7 @@
   ; First, ensure we get off the current message marker
   (if (not (eobp))
       (forward-char))
-  (if (not (re-search-forward notmuch-show-message-begin-regexp nil t))
+  (re-search-forward notmuch-show-message-begin-regexp nil t)
-      (goto-char (point-max)))
   (beginning-of-line)
   (recenter 0))
 
@@ -64,49 +70,79 @@
   "Advance point to the beginning of the previous message in the buffer."
   (interactive)
   ; First, ensure we get off the current message marker
-  (if (not (eobp))
+  (if (not (bobp))
-      (forward-char))
+      (previous-line))
-  (if (not (re-search-backward notmuch-show-message-begin-regexp nil t))
+  (re-search-backward notmuch-show-message-begin-regexp nil t)
-      (goto-char (point-min)))
   (beginning-of-line)
   (recenter 0))
 
-(defun notmuch-show-markup-this-header ()
+(defun notmuch-show-markup-body (unread)
-  (if (re-search-forward notmuch-show-header-begin-regexp nil t)
+  (re-search-forward notmuch-show-body-begin-regexp)
-      (progn
-	(overlay-put (make-overlay (match-beginning 0) (+ (match-end 0) 1))
-		     'invisible 'notmuch-show-marker)
   (next-line 1)
   (beginning-of-line)
   (let ((beg (point)))
-	  (if (re-search-forward notmuch-show-header-end-regexp nil t)
+    (re-search-forward notmuch-show-body-end-regexp)
-	      (progn
+    (if (not unread)
 	(overlay-put (make-overlay beg (match-beginning 0))
-			     'invisible 'notmuch-show-header)
+		     'invisible 'notmuch-show-body-read))
-		(overlay-put (make-overlay (match-beginning 0) (+ (match-end 0) 1))
+;      (notmuch-show-markup-citations-region beg point)
-			     'invisible 'notmuch-show-marker)))))
+    ))
+
+(defun notmuch-show-markup-header ()
+  (re-search-forward notmuch-show-header-begin-regexp)
+  (next-line 2)
+  (beginning-of-line)
+  (let ((beg (point)))
+    (re-search-forward notmuch-show-header-end-regexp)
+    (overlay-put (make-overlay beg (match-beginning 0))
+		 'invisible 'notmuch-show-header)))
+
+(defun notmuch-show-markup-message ()
+  (if (re-search-forward notmuch-show-message-begin-regexp nil t)
+      (progn
+	(let ((unread (looking-at ".*unread$")))
+	  (notmuch-show-markup-header)
+	  (notmuch-show-markup-body unread)))
     (goto-char (point-max))))
 
-(defun notmuch-show-markup-headers ()
+(defun notmuch-show-hide-markers ()
   (save-excursion
     (goto-char (point-min))
     (while (not (eobp))
-      (notmuch-show-markup-this-header))))
+      (if (re-search-forward notmuch-show-marker-regexp nil t)
+	  (progn
+	    (overlay-put (make-overlay (match-beginning 0) (+ (match-end 0) 1))
+			 'invisible 'notmuch-show-marker))
+	(goto-char (point-max))))))
+
+(defun notmuch-show-markup-messages ()
+  (save-excursion
+    (goto-char (point-min))
+    (while (not (eobp))
+      (notmuch-show-markup-message)))
+  (notmuch-show-hide-markers))
 
 (defun notmuch-show-toggle-headers-visible ()
   "Toggle visibility of header fields"
   (interactive)
   (if notmuch-show-headers-visible
-      (progn
       (add-to-invisibility-spec 'notmuch-show-header)
-	(set 'notmuch-show-headers-visible nil)
+    (remove-from-invisibility-spec 'notmuch-show-header))
+  (set 'notmuch-show-headers-visible (not notmuch-show-headers-visible))
   ; Need to force the redisplay for some reason
   (force-window-update)
   (redisplay t))
-    (remove-from-invisibility-spec 'notmuch-show-header)
+
-    (set 'notmuch-show-headers-visible t)
+(defun notmuch-show-toggle-body-read-visible ()
+  "Toggle visibility of message bodies of read messages"
+  (interactive)
+  (if notmuch-show-body-read-visible
+      (add-to-invisibility-spec 'notmuch-show-body-read)
+    (remove-from-invisibility-spec 'notmuch-show-body-read))
+  (set 'notmuch-show-body-read-visible (not notmuch-show-body-read-visible))
+  ; Need to force the redisplay for some reason
   (force-window-update)
-    (redisplay t)))
+  (redisplay t))
 
 ;;;###autoload
 (defun notmuch-show-mode ()
@@ -115,6 +151,8 @@
   (kill-all-local-variables)
   (set (make-local-variable 'notmuch-show-headers-visible) t)
   (notmuch-show-toggle-headers-visible)
+  (set (make-local-variable 'notmuch-show-body-read-visible) t)
+  (notmuch-show-toggle-body-read-visible)
   (add-to-invisibility-spec 'notmuch-show-marker)
   (use-local-map notmuch-show-mode-map)
   (setq major-mode 'notmuch-show-mode
@@ -136,7 +174,7 @@
       (goto-char (point-min))
       (save-excursion
 	(call-process "notmuch" nil t nil "show" thread-id)
-	(notmuch-show-markup-headers)
+	(notmuch-show-markup-messages)
 	)
       )))