diff -r 3e2a0ab4d6f8 -r ced704a7da4a pidgin/gtkconv.c
--- a/pidgin/gtkconv.c	Wed Jun 27 17:22:24 2007 +0000
+++ b/pidgin/gtkconv.c	Wed Jun 27 17:24:32 2007 +0000
@@ -347,15 +347,28 @@
 	}
 }
 
-static PurpleCmdRet
-clear_command_cb(PurpleConversation *conv,
-                 const char *cmd, char **args, char **error, void *data)
+static void clear_conversation_scrollback(PurpleConversation *conv)
 {
 	PidginConversation *gtkconv = NULL;
 
 	gtkconv = PIDGIN_CONVERSATION(conv);
 
 	gtk_imhtml_clear(GTK_IMHTML(gtkconv->imhtml));
+}
+
+static PurpleCmdRet
+clear_command_cb(PurpleConversation *conv,
+                 const char *cmd, char **args, char **error, void *data)
+{
+	clear_conversation_scrollback(conv);
+	return PURPLE_CMD_STATUS_OK;
+}
+
+static PurpleCmdRet
+clearall_command_cb(PurpleConversation *conv,
+                 const char *cmd, char **args, char **error, void *data)
+{
+	purple_conversation_foreach(clear_conversation_scrollback);
 	return PURPLE_CMD_STATUS_OK;
 }
 
@@ -528,13 +541,6 @@
 
 	account = purple_conversation_get_account(conv);
 
-	if (!purple_account_is_connected(account))
-		return;
-
-	if ((purple_conversation_get_type(conv) == PURPLE_CONV_TYPE_CHAT) &&
-		purple_conv_chat_has_left(PURPLE_CONV_CHAT(conv)))
-		return;
-
 	if (check_for_and_do_command(conv)) {
 		if (gtkconv->entry_growing) {
 			reset_default_size(gtkconv);
@@ -544,6 +550,13 @@
 		return;
 	}
 
+	if ((purple_conversation_get_type(conv) == PURPLE_CONV_TYPE_CHAT) &&
+		purple_conv_chat_has_left(PURPLE_CONV_CHAT(conv)))
+		return;
+
+	if (!purple_account_is_connected(account))
+		return;
+
 	buf = gtk_imhtml_get_markup(GTK_IMHTML(gtkconv->entry));
 	clean = gtk_imhtml_get_text(GTK_IMHTML(gtkconv->entry), NULL, NULL);
 
@@ -3671,7 +3684,7 @@
 	if (!strcmp(chat->nick, purple_normalize(conv->account, old_name != NULL ? old_name : name)))
 		is_me = TRUE;
 
-	is_buddy = (purple_find_buddy(conv->account, name) != NULL);
+	is_buddy = cb->buddy;
 
 	tmp = g_utf8_casefold(alias, -1);
 	alias_key = g_utf8_collate_key(tmp, -1);
@@ -5563,7 +5576,7 @@
 
 	g_return_if_fail(new_alias != NULL);
 
-	cbuddy = purple_conv_chat_cb_new(new_name, new_alias, flags);
+	cbuddy = purple_conv_chat_cb_find(chat, new_name);
 
 	add_chat_buddy_common(conv, cbuddy, old_name);
 }
@@ -7203,6 +7216,9 @@
 	purple_cmd_register("clear", "", PURPLE_CMD_P_DEFAULT,
 	                  PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_IM, NULL,
 	                  clear_command_cb, _("clear: Clears the conversation scrollback."), NULL);
+	purple_cmd_register("clearall", "", PURPLE_CMD_P_DEFAULT,
+	                  PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_IM, NULL,
+	                  clearall_command_cb, _("clear: Clears all conversation scrollbacks."), NULL);
 	purple_cmd_register("help", "w", PURPLE_CMD_P_DEFAULT,
 	                  PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_IM | PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, NULL,
 	                  help_command_cb, _("help <command>:  Help on a specific command."), NULL);