irc: update autojoin option with redirected channels when autojoin_dynamic is enabled (closes #1898)

ChangeLog.adoc

@@ -55,6 +55,7 @@ Bug fixes::
   * buflist: do not display keys added in default context on first load
   * fset: remove scroll to top of fset buffer when options are added or removed (issue #1892)
   * irc: fix join of channels in "autojoin" server option on first connection to server if auto reconnection is performed (issue #1873)
+  * irc: update autojoin option with redirected channels when autojoin_dynamic is enabled (issue #1898)
   * irc: fix target buffer for commands 432/433 (erroneous nickname/nickname already in use) when the nickname looks like a channel
   * spell: check buffer pointer received in info "spell_dict"
   * typing: fix crash when pointer buffer is not received in callback for signal "input_text_changed" (issue #1869)

src/plugins/irc/irc-join.h

@@ -47,6 +47,13 @@ extern char *irc_join_remove_channel (struct t_irc_server *server,
                                       const char *channel_name);
 extern void irc_join_remove_channel_from_autojoin (struct t_irc_server *server,
                                                    const char *channel_name);
+extern char *irc_join_rename_channel (struct t_irc_server *server,
+                                      const char *join,
+                                      const char *channel_name,
+                                      const char *new_channel_name);
+extern void irc_join_rename_channel_in_autojoin (struct t_irc_server *server,
+                                                 const char *channel_name,
+                                                 const char *new_channel_name);
 extern void irc_join_save_channels_to_autojoin (struct t_irc_server *server);
 extern char *irc_join_sort_channels (struct t_irc_server *server,
                                      const char *join);

src/plugins/irc/irc-protocol.c

@@ -48,6 +48,7 @@
 #include "irc-config.h"
 #include "irc-ctcp.h"
 #include "irc-ignore.h"
+#include "irc-join.h"
 #include "irc-message.h"
 #include "irc-mode.h"
 #include "irc-modelist.h"
@@ -6789,6 +6790,12 @@ IRC_PROTOCOL_CALLBACK(470)
                                                  WEECHAT_HOOK_SIGNAL_POINTER,
                                                  ptr_buffer);
             }
+            if (IRC_SERVER_OPTION_BOOLEAN(server,
+                                          IRC_SERVER_OPTION_AUTOJOIN_DYNAMIC))
+            {
+                irc_join_rename_channel_in_autojoin (server, params[1],
+                                                     params[2]);
+            }
         }
 
         old_channel_lower = weechat_string_tolower (params[1]);