irc: store lag in channel and private buffers (local variable "lag"),…

… in addition to the server buffer

ChangeLog.adoc

@@ -44,6 +44,7 @@ New features::
   * api: add support of specifier `%!` for timestamp in function util_strftimeval
   * api: add support of base64url in encode/decode functions
   * fset: add option `-import` in command `/fset`
+  * irc: store lag in channel and private buffers (local variable "lag"), in addition to the server buffer
   * irc: allow range in commands `/unban` and `/unquiet` (issue #2113)
   * irc: rename option irc.color.item_channel_modes to weechat.color.status_modes
   * irc: add option `-all` in command `/allchan`, do not execute command on parted channels by default (issue #2085)

src/plugins/irc/irc-server.c

@@ -1268,20 +1268,37 @@ irc_server_set_clienttagdeny (struct t_irc_server *server,
 void
 irc_server_set_lag (struct t_irc_server *server)
 {
+    struct t_irc_channel *ptr_channel;
     char str_lag[32];
 
+    str_lag[0] = '\0';
+
     if (server->lag >= weechat_config_integer (irc_config_network_lag_min_show))
     {
         snprintf (str_lag, sizeof (str_lag),
                   ((server->lag_check_time.tv_sec == 0) || (server->lag < 1000)) ?
                   "%.3f" : "%.0f",
                   ((float)(server->lag)) / 1000);
-        weechat_buffer_set (server->buffer, "localvar_set_lag", str_lag);
+
     }
+
+    if (str_lag[0])
+        weechat_buffer_set (server->buffer, "localvar_set_lag", str_lag);
     else
-    {
         weechat_buffer_set (server->buffer, "localvar_del_lag", "");
+
+    for (ptr_channel = server->channels; ptr_channel;
+         ptr_channel = ptr_channel->next_channel)
+    {
+        if (ptr_channel->buffer)
+        {
+            if (str_lag[0])
+                weechat_buffer_set (ptr_channel->buffer, "localvar_set_lag", str_lag);
+            else
+                weechat_buffer_set (ptr_channel->buffer, "localvar_del_lag", "");
+        }
     }
+
     weechat_hook_signal_send ("irc_server_lag_changed",
                               WEECHAT_HOOK_SIGNAL_STRING,
                               server->name);