doc: add more info about line, print and modifier functions for new lines (plugin API reference)

doc/en/weechat_plugin_api.en.adoc

@@ -9114,13 +9114,20 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 _WeeChat ≥ 2.3._
 
-Hook a line printed in a buffer.
+Hook a line to be printed in a buffer.
 
 When a line is printed in a buffer, hooks are called in this order:
 
-* <<_hook_line,hook line>> (this hook)
-* <<_hook_modifier,hook modifier>>: <<hook_modifier_weechat_print,weechat_print>>
-* <<_hook_print,hook print>>
+* <<_hook_line,hook line>> (this hook): it can change the buffer, prefix,
+  message, tags, notify level, … (see below)
+* <<_hook_modifier,hook modifier>> "<<hook_modifier_weechat_print,weechat_print>>":
+  it can change the prefix and message on a buffer with formatted content
+* <<_hook_print,hook print>>: called when the line has been added in a buffer
+  with formatted content (nothing can be changed directly with this hook).
+
+[NOTE]
+The "line" hook is the only one among these three hooks that can work on
+buffers with free content.
 
 Prototype:
 
@@ -9379,7 +9386,11 @@ hook = weechat.hook_line("", "", "irc_join", "my_line_cb", "")
 
 _Updated in 0.4.3, 1.0, 1.5._
 
-Hook a message printed.
+Hook a message printed. It is called when a line has been added in a buffer
+with formatted content.
+
+Fore more information on the hooks called when a line is printed, see
+<<_hook_line,hook_line>>.
 
 Prototype:
 
@@ -11036,7 +11047,9 @@ List of modifiers used by WeeChat and plugins:
 | [[hook_modifier_weechat_print]] weechat_print |
   plugin + ";" + buffer_name + ";" + tags |
   Message printed. |
-  New message printed.
+  New message printed. +
+  Fore more information on the hooks called when a line is printed, see
+  <<_hook_line,hook_line>>.
 |===
 
 [NOTE]

doc/fr/weechat_plugin_api.fr.adoc

@@ -9290,14 +9290,22 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 _WeeChat ≥ 2.3._
 
-Intercepter une ligne affichée dans un tampon.
+Intercepter une ligne sur le point d'être affichée dans un tampon.
 
 Lorsqu'une ligne est affichée dans un tampon, les "hooks" suivants sont
 appelés dans cet ordre :
 
-* <<_hook_line,hook line>> (ce "hook")
-* <<_hook_modifier,hook modifier>>: <<hook_modifier_weechat_print,weechat_print>>
-* <<_hook_print,hook print>>
+* <<_hook_line,hook line>> (ce "hook") : il peut changer le tampon, préfixe,
+  message, étiquettes, niveau de notification, … (voir ci-dessous)
+* <<_hook_modifier,hook modifier>> "<<hook_modifier_weechat_print,weechat_print>>" :
+  il peut changer le préfixe et le message sur un tampon avec contenu formaté
+* <<_hook_print,hook print>> : appelé quand une ligne a été ajoutée dans un
+  tampon avec contenu formaté (rien ne peut être changé directement avec ce
+  "hook").
+
+[NOTE]
+The "line" hook is the only one among these three hooks that can work on
+buffers with free content.
 
 Prototype :
 
@@ -9566,7 +9574,11 @@ hook = weechat.hook_line("", "", "irc_join", "my_line_cb", "")
 
 _Mis à jour dans la 0.4.3, 1.0, 1.5._
 
-Intercepter un message affiché.
+Intercepter un message affiché. Il est appelée quand une ligne a été ajoutée
+dans un tampon avec contenu formaté.
+
+Pour plus d'informations sur les "hooks" appelés lorsqu'une ligne est affichée,
+voir <<_hook_line,hook_line>>.
 
 Prototype :
 
@@ -11272,7 +11284,9 @@ Liste des modificateurs utilisés par WeeChat et les extensions :
 | [[hook_modifier_weechat_print]] weechat_print |
   extension + ";" + nom_tampon + ";" + étiquettes |
   Message affiché. |
-  Nouveau message affiché.
+  Nouveau message affiché. +
+  Pour plus d'informations sur les "hooks" appelés lorsqu'une ligne est affichée,
+  voir <<_hook_line,hook_line>>.
 |===
 
 [NOTE]

doc/it/weechat_plugin_api.it.adoc

@@ -9406,13 +9406,20 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 
 _WeeChat ≥ 2.3._
 
-Hook a line printed in a buffer.
+Hook a line to be printed in a buffer.
 
 When a line is printed in a buffer, hooks are called in this order:
 
-* <<_hook_line,hook line>> (this hook)
-* <<_hook_modifier,hook modifier>>: <<hook_modifier_weechat_print,weechat_print>>
-* <<_hook_print,hook print>>
+* <<_hook_line,hook line>> (this hook): it can change the buffer, prefix,
+  message, tags, notify level, … (see below)
+* <<_hook_modifier,hook modifier>> "<<hook_modifier_weechat_print,weechat_print>>":
+  it can change the prefix and message on a buffer with formatted content
+* <<_hook_print,hook print>>: called when the line has been added in a buffer
+  with formatted content (nothing can be changed directly with this hook).
+
+[NOTE]
+The "line" hook is the only one among these three hooks that can work on
+buffers with free content.
 
 Prototipo:
 
@@ -9672,7 +9679,13 @@ hook = weechat.hook_line("", "", "irc_join", "my_line_cb", "")
 // TRANSLATION MISSING
 _Updated in 0.4.3, 1.0, 1.5._
 
-Hook su un messaggio stampato.
+// TRANSLATION MISSING
+Hook su un messaggio stampato. It is called when a line has been added in
+a buffer with formatted content.
+
+// TRANSLATION MISSING
+Fore more information on the hooks called when a line is printed, see
+<<_hook_line,hook_line>>.
 
 Prototipo:
 
@@ -11472,10 +11485,13 @@ List of modifiers used by WeeChat and plugins:
   Contenuto della riga di comando inviata al buffer (testo o comando). |
   Nuovo contenuto della riga di comando inviata al buffer.
 
+// TRANSLATION MISSING
 | [[hook_modifier_weechat_print]] weechat_print |
   plugin + ";" + buffer_name + ";" + tags |
   Messaggio stampato. |
-  Nuovo messaggio stampato.
+  Nuovo messaggio stampato. +
+  Fore more information on the hooks called when a line is printed, see
+  <<_hook_line,hook_line>>.
 |===
 
 [NOTE]

doc/ja/weechat_plugin_api.ja.adoc

@@ -9075,14 +9075,21 @@ hook = weechat.hook_connect("", "my.server.org", 1234, 1, 0, "",
 _WeeChat ≥ 2.3._
 
 // TRANSLATION MISSING
-Hook a line printed in a buffer.
+Hook a line to be printed in a buffer.
 
 // TRANSLATION MISSING
 When a line is printed in a buffer, hooks are called in this order:
 
-* <<_hook_line,hook line>> (this hook)
-* <<_hook_modifier,hook modifier>>: <<hook_modifier_weechat_print,weechat_print>>
-* <<_hook_print,hook print>>
+* <<_hook_line,hook line>> (this hook): it can change the buffer, prefix,
+  message, tags, notify level, … (see below)
+* <<_hook_modifier,hook modifier>> "<<hook_modifier_weechat_print,weechat_print>>":
+  it can change the prefix and message on a buffer with formatted content
+* <<_hook_print,hook print>>: called when the line has been added in a buffer
+  with formatted content (nothing can be changed directly with this hook).
+
+[NOTE]
+The "line" hook is the only one among these three hooks that can work on
+buffers with free content.
 
 プロトタイプ:
 
@@ -9349,7 +9356,13 @@ hook = weechat.hook_line("", "", "irc_join", "my_line_cb", "")
 
 _WeeChat バージョン 0.4.3、1.0、1.5 で更新。_
 
-メッセージの表示をフックする。
+// TRANSLATION MISSING
+メッセージの表示をフックする。 It is called when a line has been added in
+a buffer with formatted content.
+
+// TRANSLATION MISSING
+Fore more information on the hooks called when a line is printed, see
+<<_hook_line,hook_line>>.
 
 プロトタイプ:
 
@@ -11003,10 +11016,13 @@ WeeChat とプラグインが使う修飾子のリスト:
   バッファに送信するコマンドラインの内容 (テキストまたはコマンド) |
   バッファに送信するコマンドラインの新しい内容
 
+// TRANSLATION MISSING
 | [[hook_modifier_weechat_print]] weechat_print |
   plugin + ";" + buffer_name + ";" + tags |
   表示されたメッセージ |
-  表示される新しいメッセージ
+  表示される新しいメッセージ +
+  Fore more information on the hooks called when a line is printed, see
+  <<_hook_line,hook_line>>.
 |===
 
 [NOTE]