irc: add modifier "irc_cap_sync_req" (closes #1767)

ChangeLog.adoc

@@ -41,6 +41,7 @@ New features::
   * alias: use lower case for default aliases, rename all aliases to lower case on upgrade (issue #1872)
   * irc: rename "ssl" options to "tls", connect with TLS and port 6697 by default
   * irc: add support of capabilities "batch" and "draft/multiline" (issue #1292, issue #1923)
+  * irc: add modifier "irc_cap_sync_req" (issue #1767)
   * irc: add support of "LINELEN" in message 005 (max message length in bytes) (issue #1927)
   * irc: add command `/rules` (issue #1864)
   * irc: add command `/knock` (issue #7)

doc/en/weechat_plugin_api.en.adoc

@@ -12343,6 +12343,11 @@ List of modifiers used by WeeChat and plugins:
 | New content of messages (number can be different), an empty string discards
   all messages in the batch.
 
+| [[hook_modifier_irc_cap_sync_req]] irc_cap_sync_req | 4.0.0
+| Server name + "," + supported capabilities on server (separated by spaces)
+| Capabilities to request (separated by spaces).
+| New content of capabilities to request (separated by spaces).
+
 | [[hook_modifier_irc_in_xxx]] irc_in_xxx ^(1)^ |
 | Server name
 | Content of message received from IRC server (before charset decoding). +

doc/fr/weechat_plugin_api.fr.adoc

@@ -12606,6 +12606,12 @@ Liste des modificateurs utilisés par WeeChat et les extensions :
 | Nouveau contenu des messages (le nombre peut être différent), une chaîne vide
   annule tous les messages du batch.
 
+| [[hook_modifier_irc_cap_sync_req]] irc_cap_sync_req | 4.0.0
+| Nom de serveur + "," + capacités supportées par le serveur (séparées par
+  des espaces)
+| Capacités à demander (séparées par des espaces).
+| Nouveau contenu des capacités à demander (séparées par des espaces).
+
 | [[hook_modifier_irc_in_xxx]] irc_in_xxx ^(1)^ |
 | Nom de serveur
 | Contenu du message reçu du serveur IRC (avant décodage du jeu de caractères). +

doc/it/weechat_plugin_api.it.adoc

@@ -12885,6 +12885,12 @@ List of modifiers used by WeeChat and plugins:
 | New content of messages (number can be different), an empty string discards
   all messages in the batch.
 
+// TRANSLATION MISSING
+| [[hook_modifier_irc_cap_sync_req]] irc_cap_sync_req | 4.0.0
+| Server name + "," + supported capabilities on server (separated by spaces)
+| Capabilities to request (separated by spaces).
+| New content of capabilities to request (separated by spaces).
+
 // TRANSLATION MISSING
 | [[hook_modifier_irc_in_xxx]] irc_in_xxx ^(1)^ |
 | Nome server

doc/ja/weechat_plugin_api.ja.adoc

@@ -12471,6 +12471,12 @@ WeeChat とプラグインが使う修飾子のリスト:
 | New content of messages (number can be different), an empty string discards
   all messages in the batch.
 
+// TRANSLATION MISSING
+| [[hook_modifier_irc_cap_sync_req]] irc_cap_sync_req | 4.0.0
+| Server name + "," + supported capabilities on server (separated by spaces)
+| Capabilities to request (separated by spaces).
+| New content of capabilities to request (separated by spaces).
+
 // TRANSLATION MISSING
 | [[hook_modifier_irc_in_xxx]] irc_in_xxx ^(1)^ |
 | サーバ名

doc/sr/weechat_plugin_api.sr.adoc

@@ -11938,6 +11938,12 @@ struct t_hook *weechat_hook_modifier (const char *modifier,
 | New content of messages (number can be different), an empty string discards
   all messages in the batch.
 
+// TRANSLATION MISSING
+| [[hook_modifier_irc_cap_sync_req]] irc_cap_sync_req | 4.0.0
+| Server name + "," + supported capabilities on server (separated by spaces)
+| Capabilities to request (separated by spaces).
+| New content of capabilities to request (separated by spaces).
+
 | [[hook_modifier_irc_in_xxx]] irc_in_xxx ^(1)^ |
 | Име сервера
 | Садржај поруке примљене са IRC сервера (пре декодирања скупа карактера). +