From 95c2cb1c5b6b53f95b8b6b3bdcddfd6233bf078a Mon Sep 17 00:00:00 2001
From: Sebastien Helleu <flashcode@flashtux.org>
Date: Mon, 11 Jan 2010 14:45:08 +0100
Subject: Allow callback for modifier "weechat_print" to return empty value, in
 order to remove a printed message

---
 src/gui/gui-chat.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/src/gui/gui-chat.c b/src/gui/gui-chat.c
index 4bdba4478..6aec77ecc 100644
--- a/src/gui/gui-chat.c
+++ b/src/gui/gui-chat.c
@@ -495,13 +495,23 @@ gui_chat_printf_date_tags (struct t_gui_buffer *buffer, time_t date,
                                               "weechat_print",
                                               modifier_data,
                                               pos);
-                /* no changes in new message */
-                if (new_msg && (strcmp (message, new_msg) == 0))
+                free (modifier_data);
+                if (new_msg)
                 {
-                    free (new_msg);
-                    new_msg = NULL;
+                    if (!new_msg[0])
+                    {
+                        /* modifier returned empty message, then we'll not
+                           print anything */
+                        free (new_msg);
+                        return;
+                    }
+                    if (strcmp (message, new_msg) == 0)
+                    {
+                        /* no changes in new message */
+                        free (new_msg);
+                        new_msg = NULL;
+                    }
                 }
-                free (modifier_data);
             }
         }
         
-- 
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