doc/user: add new FIFO syntax (issue #1950)

doc/de/weechat_user.de.adoc

@@ -4690,6 +4690,15 @@ Die Syntax der FIFO Pipe Befehle/Text sieht wie folgt aus:
   *hier Text oder Befehl
 ....
 
+// TRANSLATION MISSING
+Backslashes can be interpreted with this format, where `*` is replaced by `\`,
+allowing for example to send multiline messages:
+
+....
+  plugin.buffer \text or command here
+  \text or command here
+....
+
 einige Beispiele:
 
 * Ändert den eigenen Nick auf dem IRC Server libera in "newnick":
@@ -4704,6 +4713,14 @@ $ echo 'irc.server.libera */nick newnick' >/run/user/1000/weechat/weechat_fifo_1
 $ echo 'irc.libera.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+// TRANSLATION MISSING
+* Send a multiline message on IRC #test channel, if capability "draft/multiline"
+  is enabled on the ergo server:
+
+----
+$ echo 'irc.ergo.#test \hello\n...on two lines!' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 * Schickt eine Nachricht in den aktuellen Buffer:
 
 ----

doc/en/weechat_user.en.adoc

@@ -4597,6 +4597,14 @@ Syntax for the FIFO pipe commands/text is one of following:
   *text or command here
 ....
 
+Backslashes can be interpreted with this format, where `*` is replaced by `\`,
+allowing for example to send multiline messages:
+
+....
+  plugin.buffer \text or command here
+  \text or command here
+....
+
 Some examples:
 
 * Change nick on IRC server libera to "newnick":
@@ -4611,6 +4619,13 @@ $ echo 'irc.server.libera */nick newnick' >/run/user/1000/weechat/weechat_fifo_1
 $ echo 'irc.libera.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+* Send a multiline message on IRC #test channel, if capability "draft/multiline"
+  is enabled on the ergo server:
+
+----
+$ echo 'irc.ergo.#test \hello\n...on two lines!' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 * Send a message on current buffer:
 
 ----

doc/fr/weechat_user.fr.adoc

@@ -4747,6 +4747,14 @@ des suivantes :
   *texte ou commande ici
 ....
 
+Les barres obliques inverses peuvent être interprétées avec ce format, où `*`
+est remplacé par `\`, autorisant par exemple l'envoi de messages multi-lignes :
+
+....
+  plugin.buffer \texte ou commande ici
+  \texte ou commande ici
+....
+
 Quelques exemples :
 
 * Changer le pseudo sur libera en "autrepseudo" :
@@ -4761,6 +4769,13 @@ $ echo 'irc.server.libera */nick autrepseudo' >/run/user/1000/weechat/weechat_fi
 $ echo 'irc.libera.#weechat *bonjour !' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+* Envoyer un message multi-lignes sur le canal IRC #test, si la capacité
+  "draft/multiline" est activée sur le serveur ergo :
+
+----
+$ echo 'irc.ergo.#test \bonjour\n...sur deux lignes !' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 * Envoyer un message sur le tampon courant :
 
 ----

doc/it/weechat_user.it.adoc

@@ -4948,6 +4948,15 @@ La sintassi per i comandi/testo della pipe FIFO è una delle seguenti:
   *testo o comando qui
 ....
 
+// TRANSLATION MISSING
+Backslashes can be interpreted with this format, where `*` is replaced by `\`,
+allowing for example to send multiline messages:
+
+....
+  plugin.buffer \text or command here
+  \text or command here
+....
+
 Alcuni esempi:
 
 // TRANSLATION MISSING
@@ -4964,6 +4973,14 @@ $ echo 'irc.server.libera */nick newnick' >/run/user/1000/weechat/weechat_fifo_1
 $ echo 'irc.libera.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+// TRANSLATION MISSING
+* Send a multiline message on IRC #test channel, if capability "draft/multiline"
+  is enabled on the ergo server:
+
+----
+$ echo 'irc.ergo.#test \hello\n...on two lines!' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 // TRANSLATION MISSING
 * Send a message on current buffer:
 

doc/ja/weechat_user.ja.adoc

@@ -4778,6 +4778,15 @@ FIFO パイプに書き込むコマンド/テキストの文法は以下の例
   *テキストまたはコマンド
 ....
 
+// TRANSLATION MISSING
+Backslashes can be interpreted with this format, where `*` is replaced by `\`,
+allowing for example to send multiline messages:
+
+....
+  plugin.buffer \text or command here
+  \text or command here
+....
+
 例:
 
 * IRC サーバ libera で使うニックネームを "newnick" に変更する:
@@ -4792,6 +4801,14 @@ $ echo 'irc.server.libera */nick newnick' >/run/user/1000/weechat/weechat_fifo_1
 $ echo 'irc.libera.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+// TRANSLATION MISSING
+* Send a multiline message on IRC #test channel, if capability "draft/multiline"
+  is enabled on the ergo server:
+
+----
+$ echo 'irc.ergo.#test \hello\n...on two lines!' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 * 現在のバッファに対してテキストを送信:
 
 ----

doc/pl/weechat_user.pl.adoc

@@ -4658,6 +4658,15 @@ Składnia dla komend/tekstu przekazywanego do kolejki FIFO wygląda następując
   *tekst lub komenda
 ....
 
+// TRANSLATION MISSING
+Backslashes can be interpreted with this format, where `*` is replaced by `\`,
+allowing for example to send multiline messages:
+
+....
+  plugin.buffer \text or command here
+  \text or command here
+....
+
 Kilka przykładów:
 
 * Zmiana nicka na serwerze IRC libera na "newnick":
@@ -4672,6 +4681,14 @@ $ echo 'irc.server.libera */nick newnick' >/run/user/1000/weechat/weechat_fifo_1
 $ echo 'irc.libera.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+// TRANSLATION MISSING
+* Send a multiline message on IRC #test channel, if capability "draft/multiline"
+  is enabled on the ergo server:
+
+----
+$ echo 'irc.ergo.#test \hello\n...on two lines!' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 * Wysłanie wiadomości do obecnego bufora:
 
 ----

doc/sr/weechat_user.sr.adoc

@@ -4340,6 +4340,15 @@ FIFO пајп се налази у WeeChat директоријуму за вр
   *овде иде текст или команда
 ....
 
+// TRANSLATION MISSING
+Backslashes can be interpreted with this format, where `*` is replaced by `\`,
+allowing for example to send multiline messages:
+
+....
+  plugin.buffer \text or command here
+  \text or command here
+....
+
 Неки примери:
 
 * Измена надимка на IRC серверу libera на „newnick”:
@@ -4354,6 +4363,14 @@ $ echo 'irc.server.libera */nick newnick' >/run/user/1000/weechat/weechat_fifo_1
 $ echo 'irc.libera.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
+// TRANSLATION MISSING
+* Send a multiline message on IRC #test channel, if capability "draft/multiline"
+  is enabled on the ergo server:
+
+----
+$ echo 'irc.ergo.#test \hello\n...on two lines!' >/run/user/1000/weechat/weechat_fifo_12345
+----
+
 * Слање поруке у текући бафер:
 
 ----