fifo: add PID in default FIFO pipe filename (issue #1285)

This is to prevent two WeeChat using the same runtime directory to use the same
FIFO pipe.

doc/de/weechat_user.de.adoc

@@ -2801,7 +2801,7 @@ ist diese Option aktiviert).
 
 // TRANSLATION MISSING
 The FIFO pipe is located in WeeChat runtime directory and is called
-_weechat_fifo_ by default.
+_weechat_fifo_12345_ by default (where _12345_ is the WeeChat process id).
 
 Die Syntax der FIFO Pipe Befehle/Text sieht wie folgt aus:
 
@@ -2815,26 +2815,26 @@ einige Beispiele:
 * Ändert den eigenen Nick auf dem IRC Server freenode in "newnick":
 
 ----
-$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Schickt eine Nachrich in den IRC #weechat Channel:
 
 ----
-$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Schickt eine Nachricht in den aktuellen Buffer:
 
 ----
-$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Sendet zwei Befehle um alle Python-Skripten zu entfernen und dann neu zu laden (die beiden Befehle müssen
   mit "\n" getrennt werden):
 
 ----
-$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo
+$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 [[fifo_commands]]

doc/en/weechat_user.en.adoc

@@ -2741,7 +2741,7 @@ You can remote control WeeChat, by sending commands or text to a FIFO pipe (if
 option "fifo.file.enabled" is enabled, it is by default).
 
 The FIFO pipe is located in WeeChat runtime directory and is called
-_weechat_fifo_ by default.
+_weechat_fifo_12345_ by default (where _12345_ is the WeeChat process id).
 
 Syntax for the FIFO pipe commands/text is one of following:
 
@@ -2755,26 +2755,26 @@ Some examples:
 * Change nick on IRC server freenode to "newnick":
 
 ----
-$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Send a message on IRC #weechat channel:
 
 ----
-$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Send a message on current buffer:
 
 ----
-$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Send two commands to unload/reload Python scripts (you have to separate them
   with "\n"):
 
 ----
-$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo
+$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 [[fifo_commands]]

doc/fr/weechat_user.fr.adoc

@@ -2837,8 +2837,8 @@ Vous pouvez contrôler WeeChat à distance, en envoyant des commandes ou du
 texte dans un tube FIFO (si l'option _fifo.file.enabled_ est activée,
 elle l'est par défaut).
 
-Le tube FIFO est dans le répertoire WeeChat "runtime" et s'appelle _weechat_fifo_
-par défaut.
+Le tube FIFO est dans le répertoire WeeChat "runtime" et s'appelle
+_weechat_fifo_12345_ par défaut (où _12345_ est le process id de WeeChat).
 
 La syntaxe pour envoyer des commandes ou du texte dans le tube FIFO est une
 des suivantes :
@@ -2853,26 +2853,26 @@ Quelques exemples :
 * Changer le pseudo sur freenode en "autrepseudo" :
 
 ----
-$ echo 'irc.server.freenode */nick autrepseudo' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.server.freenode */nick autrepseudo' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Envoyer un message sur le canal IRC #weechat :
 
 ----
-$ echo 'irc.freenode.#weechat *bonjour !' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.freenode.#weechat *bonjour !' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Envoyer un message sur le tampon courant :
 
 ----
-$ echo '*bonjour !' >/run/user/1000/weechat/weechat_fifo
+$ echo '*bonjour !' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Envoyer deux commandes pour décharger/recharger les scripts Python (vous devez
   les séparer par "\n") :
 
 ----
-$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo
+$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 [[fifo_commands]]

doc/it/weechat_user.it.adoc

@@ -2946,7 +2946,7 @@ pipe FIFO (se l'opzione "fifo.file.enabled" è abilitata, e lo è per default).
 
 // TRANSLATION MISSING
 The FIFO pipe is located in WeeChat runtime directory and is called
-_weechat_fifo_ by default.
+_weechat_fifo_12345_ by default (where _12345_ is the WeeChat process id).
 
 La sintassi per i comandi/testo della pipe FIFO è una delle seguenti:
 
@@ -2961,28 +2961,28 @@ Alcuni esempi:
 * Change nick on IRC server freenode to "newnick":
 
 ----
-$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 // TRANSLATION MISSING
 * Send a message on IRC #weechat channel:
 
 ----
-$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 // TRANSLATION MISSING
 * Send a message on current buffer:
 
 ----
-$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Inviare due comandi per scaricare/caricare gli script Python (è necessario
   separarli con "\n"):
 
 ----
-$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo
+$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 [[fifo_commands]]

doc/ja/weechat_user.ja.adoc

@@ -2816,7 +2816,7 @@ include::includes/autogen_user_options.ja.adoc[tag=exec_options]
 
 // TRANSLATION MISSING
 The FIFO pipe is located in WeeChat runtime directory and is called
-_weechat_fifo_ by default.
+_weechat_fifo_12345_ by default (where _12345_ is the WeeChat process id).
 
 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の一つです:
 
@@ -2830,26 +2830,26 @@ 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
 * IRC サーバ freenode で使うニックネームを "newnick" に変更する:
 
 ----
-$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * IRC チャンネル #weechat に対してテキストを送信:
 
 ----
-$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.freenode.#weechat *hello!' >/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:
 
 ----
-$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Python スクリプトのアンロードとロードを行う 2 つのコマンドを送信
   (複数のコマンドは "\n" で分割してください):
 
 ----
-$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo
+$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 [[fifo_commands]]

doc/pl/weechat_user.pl.adoc

@@ -2775,7 +2775,7 @@ włączona).
 
 // TRANSLATION MISSING
 The FIFO pipe is located in WeeChat runtime directory and is called
-_weechat_fifo_ by default.
+_weechat_fifo_12345_ by default (where _12345_ is the WeeChat process id).
 
 Składnia dla komend/tekstu przekazywanego do kolejki FIFO wygląda następująco:
 
@@ -2789,26 +2789,26 @@ Kilka przykładów:
 * Zmiana nicka na serwerze IRC freenode na "newnick":
 
 ----
-$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.server.freenode */nick newnick' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Wysłanie wiadomości na kanał IRC #weechat:
 
 ----
-$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo 'irc.freenode.#weechat *hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Wysłanie wiadomości do obecnego bufora:
 
 ----
-$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo
+$ echo '*hello!' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 * Wysłanie dwóch komend do wyładowania/przeładowania skryptów Python (należy
   oddzielić je za pomocą "\n"):
 
 ----
-$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo
+$ printf '%b' '*/python unload\n*/python autoload\n' >/run/user/1000/weechat/weechat_fifo_12345
 ----
 
 [[fifo_commands]]

src/plugins/fifo/fifo-command.c

@@ -102,8 +102,9 @@ fifo_command_init ()
            "\n"
            "FIFO pipe is used as remote control of WeeChat: you can send "
            "commands or text to the FIFO pipe from your shell.\n"
-           "By default the FIFO pipe is called weechat_fifo and saved in the "
-           "WeeChat runtime directory (see /debug dirs).\n"
+           "By default the FIFO pipe is called weechat_fifo_xxx (where xxx is "
+           "the WeeChat process id) and saved in the WeeChat runtime directory "
+           "(see /debug dirs).\n"
            "\n"
            "The expected format is one of:\n"
            "  plugin.buffer *text or command here\n"
@@ -111,7 +112,7 @@ fifo_command_init ()
            "\n"
            "For example to change your freenode nick:\n"
            "  echo 'irc.server.freenode */nick newnick' "
-           ">/run/user/1000/weechat/weechat_fifo\n"
+           ">/run/user/1000/weechat/weechat_fifo_12345\n"
            "\n"
            "Please read the user's guide for more info and examples.\n"
            "\n"

src/plugins/fifo/fifo-config.c

@@ -122,7 +122,7 @@ fifo_config_init ()
            "WeeChat PID can be used in path with ${info:pid} "
            "(path is evaluated, see function string_eval_path_home in "
            "plugin API reference)"),
-        NULL, 0, 0, "${weechat_runtime_dir}/weechat_fifo", NULL, 0,
+        NULL, 0, 0, "${weechat_runtime_dir}/weechat_fifo_${info:pid}", NULL, 0,
         NULL, NULL, NULL,
         fifo_config_change_file_path, NULL, NULL,
         NULL, NULL, NULL);