api: add support of infos with format `${info:name,arguments}` in function string_eval_expression and command /eval

20 files changed, 218 insertions, 152 deletions

diff --git a/ChangeLog b/ChangeLog
index d07e93f29..e37374088 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -27,6 +27,8 @@ http://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 * core: fix truncated prefix when filters are toggled (bug #40204)
 * core: add options to customize default text search in buffers:
   weechat.look.buffer_search_{case_sensitive|force_default|regex|where}
+* api: add support of infos with format `${info:name,arguments}` in function
+  string_eval_expression and command /eval
 * api: add support for C++ plugins
 * api: fix read of arrays in hdata functions hdata_<type> (bug #40354)
 * irc: fix groups in channel nicklist when reconnecting to a server that
diff --git a/doc/de/autogen/user/weechat_commands.txt b/doc/de/autogen/user/weechat_commands.txt
index bc233382f..399af1db5 100644
--- a/doc/de/autogen/user/weechat_commands.txt
+++ b/doc/de/autogen/user/weechat_commands.txt
@@ -217,42 +217,44 @@ infolists: zeigt Information über die Infolists an
 /eval  [-n] <expression>
        [-n] -c <expression1> <operator> <expression2>
 
-        -n: zeigt das Ergebnis lokal an, ohne das dieses in den Buffer gesendet wird (debug Modus)
-        -c: Auswertung als Bedingung: nutzt Operatoren und runde Klammern, Rückgabewert als Boolean-Wert ("0" oder "1")
-expression: Ausdruck welcher verarbeitet werden soll. Variablen im Format ${variable} werden ersetzt (siehe unten)
-  operator: ein logischer oder vergleichender Operand:
-            - logische Operanden:
-                &&  boolean "und"
-                ||  boolean "oder"
-            - vergleichende Operanden:
-                ==  gleich
-                !=  ungleich
-                <=  kleiner oder gleich
-                <   kleiner
-                >=  größer oder gleich
-                >   größer
-                =~  stimmt mit regulärem Ausdruck überein
-                !~  stimmt NICHT mit regulärem Ausdruck überein
-
-Ein Ausdruck gilt als "wahr", sofern das Ergebnis nicht NULL, nicht leer und von "0" abweichend ist.
-Der Vergleich findet zwischen zwei Integer Werten statt, sofern die beiden Ausdrücke gültige Integer-Werte sind.
-Um einen Vergleich zwischen zwei Zeichenketten zu erzwingen, müssen die Ausdrücke in Anführungszeichen gesetzt werden, zum Beispiel:
+        -n: display result without sending it to buffer (debug mode)
+        -c: evaluate as condition: use operators and parentheses, return a boolean value ("0" or "1")
+expression: expression to evaluate, variables with format ${variable} are replaced (see below)
+  operator: a logical or comparison operator:
+            - logical operators:
+                &&  boolean "and"
+                ||  boolean "or"
+            - comparison operators:
+                ==  equal
+                !=  not equal
+                <=  less or equal
+                <   less
+                >=  greater or equal
+                >   greater
+                =~  is matching regex
+                !~  is NOT matching regex
+
+An expression is considered as "true" if it is not NULL, not empty, and different from "0".
+The comparison is made using integers if the two expressions are valid integers.
+To force a string comparison, add double quotes around each expression, for example:
   50 > 100      ==> 0
   "50" > "100"  ==> 1
 
-Einige Variablen werden im Ausdruck, mittels der Formatierung ${Variable}, ersetzt. Mögliche Variablen sind, nach Reihenfolge ihrer Priorität:
-  1. eine Farbe (Format: color:xxx)
-  2. der Name einer Option (Format: file.section.option)
-  3. der Name einer lokalen Variablen eines Buffer
-  4. ein hdata Name/Variable (der Wert wird automatisch als Zeichenkette konvertiert), Standardmäßig wird für "window" und "buffer" das aktuelle Fenster/Buffer verwendet.
-Das Format für hdata kann wie folgt lauten:
-  hdata.var1.var2...: startet mit hdata (der Pointer muss bekannt sein) und fragt eine Variable nach der anderen ab (weitere hdata können folgen)
-  hdata[list].var1.var2...: startet hdata mittels einer Liste, zum Beispiel:
-    ${buffer[gui_buffers].full_name}: der vollständige Name des ersten Buffers, in der verknüpften Liste aller Buffer
-    ${plugin[weechat_plugins].name}: Name der ersten Erweiterung, in der verknüpften Liste aller Erweiterungen
-Die vorhandenen Namen für hdata und Variablen sind in der "Anleitung für API Erweiterung", Bereich "weechat_hdata_get". beschrieben
-
-Beispiele:
+Some variables are replaced in expression, using the format ${variable}, variable can be, by order of priority :
+  1. a color (format: "color:xxx")
+  2. an info (format: "info:name,arguments", arguments are optional)
+  3. an option (format: "file.section.option")
+  4. a local variable in buffer
+  5. a hdata name/variable (the value is automatically converted to string), by default "window" and "buffer" point to current window/buffer.
+Format for hdata can be one of following:
+  hdata.var1.var2...: start with a hdata (pointer must be known), and ask variables one after one (other hdata can be followed)
+  hdata[list].var1.var2...: start with a hdata using a list, for example:
+    ${buffer[gui_buffers].full_name}: full name of first buffer in linked list of buffers
+    ${plugin[weechat_plugins].name}: name of first plugin in linked list of plugins
+For name of hdata and variables, please look at "Plugin API reference", function "weechat_hdata_get".
+
+Examples:
+  /eval -n ${info:version}                 ==> 0.4.3
   /eval -n ${weechat.look.scroll_amount}   ==> 3
   /eval -n ${window}                       ==> 0x2549aa0
   /eval -n ${window.buffer}                ==> 0x2549320
diff --git a/doc/en/autogen/user/weechat_commands.txt b/doc/en/autogen/user/weechat_commands.txt
index ab2040949..e2eb66896 100644
--- a/doc/en/autogen/user/weechat_commands.txt
+++ b/doc/en/autogen/user/weechat_commands.txt
@@ -241,10 +241,11 @@ To force a string comparison, add double quotes around each expression, for exam
   "50" > "100"  ==> 1
 
 Some variables are replaced in expression, using the format ${variable}, variable can be, by order of priority :
-  1. a color (format: color:xxx)
-  2. an option (format: file.section.option)
-  3. a local variable in buffer
-  4. a hdata name/variable (the value is automatically converted to string), by default "window" and "buffer" point to current window/buffer.
+  1. a color (format: "color:xxx")
+  2. an info (format: "info:name,arguments", arguments are optional)
+  3. an option (format: "file.section.option")
+  4. a local variable in buffer
+  5. a hdata name/variable (the value is automatically converted to string), by default "window" and "buffer" point to current window/buffer.
 Format for hdata can be one of following:
   hdata.var1.var2...: start with a hdata (pointer must be known), and ask variables one after one (other hdata can be followed)
   hdata[list].var1.var2...: start with a hdata using a list, for example:
@@ -253,6 +254,7 @@ Format for hdata can be one of following:
 For name of hdata and variables, please look at "Plugin API reference", function "weechat_hdata_get".
 
 Examples:
+  /eval -n ${info:version}                 ==> 0.4.3
   /eval -n ${weechat.look.scroll_amount}   ==> 3
   /eval -n ${window}                       ==> 0x2549aa0
   /eval -n ${window.buffer}                ==> 0x2549320
diff --git a/doc/fr/autogen/user/weechat_commands.txt b/doc/fr/autogen/user/weechat_commands.txt
index aa96dcd27..565848580 100644
--- a/doc/fr/autogen/user/weechat_commands.txt
+++ b/doc/fr/autogen/user/weechat_commands.txt
@@ -241,10 +241,11 @@ Pour forcer une comparaison de chaînes, ajoutez des guillemets autour de chaque
   "50" > "100"  ==> 1
 
 Des variables sont remplacées dans l'expression, en utilisant le format ${variable}, la variable pouvant être, par ordre de priorité :
-  1. une couleur (format: color:xxx)
-  2. une option (format: fichier.section.option)
-  3. une variable locale du tampon
-  4. un hdata/variable (la valeur est automatiquement convertie en chaîne), par défaut "window" et "buffer" pointent vers la fenêtre et le tampon courants.
+  1. une couleur (format: "color:xxx")
+  2. une info (format: "info:nom,paramètres", les paramètres sont optionnels)
+  3. une option (format: "fichier.section.option")
+  4. une variable locale du tampon
+  5. un hdata/variable (la valeur est automatiquement convertie en chaîne), par défaut "window" et "buffer" pointent vers la fenêtre et le tampon courants.
 Le format du hdata peut être le suivant :
   hdata.var1.var2...: démarrer avec un hdata (le pointeur doit être connu), et demander les variables l'une après l'autre (d'autres hdata peuvent être suivis)
   hdata[list].var1.var2...: démarrer avec un hdata en utilisant une liste, par exemple :
@@ -253,6 +254,7 @@ Le format du hdata peut être le suivant :
 Pour le nom du hdata et des variables, voir la "Référence API extension", fonction "weechat_hdata_get".
 
 Exemples:
+  /eval -n ${info:version}                 ==> 0.4.3
   /eval -n ${weechat.look.scroll_amount}   ==> 3
   /eval -n ${window}                       ==> 0x2549aa0
   /eval -n ${window.buffer}                ==> 0x2549320
diff --git a/doc/it/autogen/user/weechat_commands.txt b/doc/it/autogen/user/weechat_commands.txt
index 2ab3fb70a..c4f89bbb2 100644
--- a/doc/it/autogen/user/weechat_commands.txt
+++ b/doc/it/autogen/user/weechat_commands.txt
@@ -241,10 +241,11 @@ To force a string comparison, add double quotes around each expression, for exam
   "50" > "100"  ==> 1
 
 Some variables are replaced in expression, using the format ${variable}, variable can be, by order of priority :
-  1. a color (format: color:xxx)
-  2. an option (format: file.section.option)
-  3. a local variable in buffer
-  4. a hdata name/variable (the value is automatically converted to string), by default "window" and "buffer" point to current window/buffer.
+  1. a color (format: "color:xxx")
+  2. an info (format: "info:name,arguments", arguments are optional)
+  3. an option (format: "file.section.option")
+  4. a local variable in buffer
+  5. a hdata name/variable (the value is automatically converted to string), by default "window" and "buffer" point to current window/buffer.
 Format for hdata can be one of following:
   hdata.var1.var2...: start with a hdata (pointer must be known), and ask variables one after one (other hdata can be followed)
   hdata[list].var1.var2...: start with a hdata using a list, for example:
@@ -253,6 +254,7 @@ Format for hdata can be one of following:
 For name of hdata and variables, please look at "Plugin API reference", function "weechat_hdata_get".
 
 Examples:
+  /eval -n ${info:version}                 ==> 0.4.3
   /eval -n ${weechat.look.scroll_amount}   ==> 3
   /eval -n ${window}                       ==> 0x2549aa0
   /eval -n ${window.buffer}                ==> 0x2549320
diff --git a/doc/ja/autogen/user/weechat_commands.txt b/doc/ja/autogen/user/weechat_commands.txt
index a5174ff2d..665b26754 100644
--- a/doc/ja/autogen/user/weechat_commands.txt
+++ b/doc/ja/autogen/user/weechat_commands.txt
@@ -217,42 +217,44 @@ infolists: infolist に関する情報を表示
 /eval  [-n] <expression>
        [-n] -c <expression1> <operator> <expression2>
 
-        -n: 結果をバッファに送信せずに表示 (デバッグモード)
-        -c: 条件として評価: 演算子と括弧をを使い、ブール値 ("0" または "1") を返します
-expression: 評価する式、フォーマット、${variable} 型のフォーマットの変数は置換されます (以下を参照)
-  operator: 論理演算子や比較演算子:
-            - 論理演算子:
-                &&  ブール演算の "and"
-                ||  ブール演算の "or"
-            - 比較演算子:
-                ==  等しい
-                !=  等しくない
-                <=  以下
-                <   より少ない
-                >=  以上
-                >   より大きい
-                =~  正規表現にマッチ
-                !~  正規表現にマッチしない
-
-式が NULL でない場合、空でない場合、"0" でない場合、式は "真" と評価されます。
-両方の式が有効な整数である場合、比較は整数を使って行われます。
-文字列比較を強制するには、それぞれの式をダブルクォートで囲みます、例えば:
+        -n: display result without sending it to buffer (debug mode)
+        -c: evaluate as condition: use operators and parentheses, return a boolean value ("0" or "1")
+expression: expression to evaluate, variables with format ${variable} are replaced (see below)
+  operator: a logical or comparison operator:
+            - logical operators:
+                &&  boolean "and"
+                ||  boolean "or"
+            - comparison operators:
+                ==  equal
+                !=  not equal
+                <=  less or equal
+                <   less
+                >=  greater or equal
+                >   greater
+                =~  is matching regex
+                !~  is NOT matching regex
+
+An expression is considered as "true" if it is not NULL, not empty, and different from "0".
+The comparison is made using integers if the two expressions are valid integers.
+To force a string comparison, add double quotes around each expression, for example:
   50 > 100      ==> 0
   "50" > "100"  ==> 1
 
-式中の ${variable} 型のフォーマットの変数は置換さます。変数は以下の優先順位に従います。
-  1. 色の名前 (フォーマット: color:xxx)
-  2. オプションの名前 (file.section.option)
-  3. バッファのローカル変数の名前
-  4. hdata の名前/変数 (値は自動的に文字列に変換されます)、デフォルトでは "window" と "buffer" は現在のウィンドウ/バッファを指します。
-hdata のフォーマットは以下の 1 つです:
-  hdata.var1.var2...: hdata (ポインタは既知) で始まり、1 個ずつ変数を続ける (他の hdata を続けることも可能)
-  hdata(list).var1.var2...: リストを使って hdata を始める、例:
-    ${buffer[gui_buffers].full_name}: バッファリストにリンクされた最初のバッファのフルネーム
-    ${plugin[weechat_plugins].name}: プラグインリストにリンクされた最初のプラグインの名前
-hdata と変数の名前については、"プラグイン API リファレンス" の "weechat_hdata_get" 関数を参照してください。
+Some variables are replaced in expression, using the format ${variable}, variable can be, by order of priority :
+  1. a color (format: "color:xxx")
+  2. an info (format: "info:name,arguments", arguments are optional)
+  3. an option (format: "file.section.option")
+  4. a local variable in buffer
+  5. a hdata name/variable (the value is automatically converted to string), by default "window" and "buffer" point to current window/buffer.
+Format for hdata can be one of following:
+  hdata.var1.var2...: start with a hdata (pointer must be known), and ask variables one after one (other hdata can be followed)
+  hdata[list].var1.var2...: start with a hdata using a list, for example:
+    ${buffer[gui_buffers].full_name}: full name of first buffer in linked list of buffers
+    ${plugin[weechat_plugins].name}: name of first plugin in linked list of plugins
+For name of hdata and variables, please look at "Plugin API reference", function "weechat_hdata_get".
 
-例:
+Examples:
+  /eval -n ${info:version}                 ==> 0.4.3
   /eval -n ${weechat.look.scroll_amount}   ==> 3
   /eval -n ${window}                       ==> 0x2549aa0
   /eval -n ${window.buffer}                ==> 0x2549320
diff --git a/po/cs.po b/po/cs.po
index 255a29a69..b4610f197 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Jiri Golembiovsky <golemj@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1312,10 +1312,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1329,6 +1330,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/de.po b/po/de.po
index 5a8a43f03..ff70cadef 100644
--- a/po/de.po
+++ b/po/de.po
@@ -22,7 +22,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat 0.4.3-dev\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Nils Görs <weechatter@arcor.de>\n"
 "Language-Team: German <weechatter@arcor.de>\n"
@@ -1331,6 +1331,7 @@ msgstr "wertet eine Expression aus und zeigt das Resultat im Buffer an"
 msgid "[-n] <expression> || [-n] -c <expression1> <operator> <expression2>"
 msgstr "[-n] <expression> || [-n] -c <expression1> <operator> <expression2>"
 
+#, fuzzy
 msgid ""
 "        -n: display result without sending it to buffer (debug mode)\n"
 "        -c: evaluate as condition: use operators and parentheses, return a "
@@ -1362,10 +1363,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1379,6 +1381,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/es.po b/po/es.po
index 270427525..2080ca07b 100644
--- a/po/es.po
+++ b/po/es.po
@@ -22,7 +22,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Elián Hanisch <lambdae2@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1349,10 +1349,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1366,6 +1367,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/fr.po b/po/fr.po
index 81f28e8f6..94c60e639 100644
--- a/po/fr.po
+++ b/po/fr.po
@@ -21,8 +21,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
-"PO-Revision-Date: 2013-11-09 13:08+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
+"PO-Revision-Date: 2013-11-09 15:21+0100\n"
 "Last-Translator: Sebastien Helleu <flashcode@flashtux.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
 "Language: fr\n"
@@ -1341,10 +1341,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1358,6 +1359,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
@@ -1402,10 +1404,12 @@ msgstr ""
 "\n"
 "Des variables sont remplacées dans l'expression, en utilisant le format "
 "${variable}, la variable pouvant être, par ordre de priorité :\n"
-"  1. une couleur (format: color:xxx)\n"
-"  2. une option (format: fichier.section.option)\n"
-"  3. une variable locale du tampon\n"
-"  4. un hdata/variable (la valeur est automatiquement convertie en chaîne), "
+"  1. une couleur (format: \"color:xxx\")\n"
+"  2. une info (format: \"info:nom,paramètres\", les paramètres sont "
+"optionnels)\n"
+"  3. une option (format: \"fichier.section.option\")\n"
+"  4. une variable locale du tampon\n"
+"  5. un hdata/variable (la valeur est automatiquement convertie en chaîne), "
 "par défaut \"window\" et \"buffer\" pointent vers la fenêtre et le tampon "
 "courants.\n"
 "Le format du hdata peut être le suivant :\n"
@@ -1422,6 +1426,7 @@ msgstr ""
 "fonction \"weechat_hdata_get\".\n"
 "\n"
 "Exemples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/hu.po b/po/hu.po
index 4a0ccea4a..cabb375d4 100644
--- a/po/hu.po
+++ b/po/hu.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Andras Voroskoi <voroskoi@frugalware.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1241,10 +1241,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1258,6 +1259,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/it.po b/po/it.po
index e4ea3e7a9..593872911 100644
--- a/po/it.po
+++ b/po/it.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Esteban I. Ruiz Moreno <exio4.com@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1324,10 +1324,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1341,6 +1342,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/ja.po b/po/ja.po
index f166a70f5..2bf1d8400 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>\n"
 "Language-Team: Japanese <https://github.com/l/WeeChat>\n"
@@ -1279,6 +1279,7 @@ msgstr "式を評価して結果をバッファに送信"
 msgid "[-n] <expression> || [-n] -c <expression1> <operator> <expression2>"
 msgstr "[-n] <expression> || [-n] -c <expression1> <operator> <expression2>"
 
+#, fuzzy
 msgid ""
 "        -n: display result without sending it to buffer (debug mode)\n"
 "        -c: evaluate as condition: use operators and parentheses, return a "
@@ -1310,10 +1311,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1327,6 +1329,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/pl.po b/po/pl.po
index 30c77859b..77ddaca9e 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Krzysztof Korościk <soltys@szluug.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1311,6 +1311,7 @@ msgstr "przetwarza wyrażenie i wysyła wynik do buforu"
 msgid "[-n] <expression> || [-n] -c <expression1> <operator> <expression2>"
 msgstr "[-n] <wyrażenie> || [-n] -c <wyrażenie1> <operator> <wyrażenie2>"
 
+#, fuzzy
 msgid ""
 "        -n: display result without sending it to buffer (debug mode)\n"
 "        -c: evaluate as condition: use operators and parentheses, return a "
@@ -1342,10 +1343,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1359,6 +1361,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/pt_BR.po b/po/pt_BR.po
index 380dfe68c..070ffb8f7 100644
--- a/po/pt_BR.po
+++ b/po/pt_BR.po
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Sergio Durigan Junior <sergiosdj@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1364,10 +1364,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1381,6 +1382,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/ru.po b/po/ru.po
index 6a0273cf6..d7732d03d 100644
--- a/po/ru.po
+++ b/po/ru.po
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:18+0100\n"
 "Last-Translator: Aleksey V Zapparov AKA ixti <ixti@member.fsf.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1263,10 +1263,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1280,6 +1281,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/tr.po b/po/tr.po
index 6a2985613..cb8211e81 100644
--- a/po/tr.po
+++ b/po/tr.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-11-09 10:13+0100\n"
 "Last-Translator: Hasan Kiran <sunder67@hotmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1105,10 +1105,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1122,6 +1123,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/po/weechat.pot b/po/weechat.pot
index cb53825c7..8e204174c 100644
--- a/po/weechat.pot
+++ b/po/weechat.pot
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat 0.4.1-dev\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2013-11-09 12:20+0100\n"
+"POT-Creation-Date: 2013-11-09 15:21+0100\n"
 "PO-Revision-Date: 2013-02-14 18:20+0100\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -1111,10 +1111,11 @@ msgid ""
 "\n"
 "Some variables are replaced in expression, using the format ${variable}, "
 "variable can be, by order of priority :\n"
-"  1. a color (format: color:xxx)\n"
-"  2. an option (format: file.section.option)\n"
-"  3. a local variable in buffer\n"
-"  4. a hdata name/variable (the value is automatically converted to string), "
+"  1. a color (format: \"color:xxx\")\n"
+"  2. an info (format: \"info:name,arguments\", arguments are optional)\n"
+"  3. an option (format: \"file.section.option\")\n"
+"  4. a local variable in buffer\n"
+"  5. a hdata name/variable (the value is automatically converted to string), "
 "by default \"window\" and \"buffer\" point to current window/buffer.\n"
 "Format for hdata can be one of following:\n"
 "  hdata.var1.var2...: start with a hdata (pointer must be known), and ask "
@@ -1128,6 +1129,7 @@ msgid ""
 "function \"weechat_hdata_get\".\n"
 "\n"
 "Examples:\n"
+"  /eval -n ${info:version}                 ==> 0.4.3\n"
 "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
 "  /eval -n ${window}                       ==> 0x2549aa0\n"
 "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/src/core/wee-command.c b/src/core/wee-command.c
index 159ae457c..c58b60219 100644
--- a/src/core/wee-command.c
+++ b/src/core/wee-command.c
@@ -6410,11 +6410,14 @@ command_init ()
                      "  50 > 100      ==> 0\n"
                      "  \"50\" > \"100\"  ==> 1\n\n"
                      "Some variables are replaced in expression, using the "
-                     "format ${variable}, variable can be, by order of priority :\n"
-                     "  1. a color (format: color:xxx)\n"
-                     "  2. an option (format: file.section.option)\n"
-                     "  3. a local variable in buffer\n"
-                     "  4. a hdata name/variable (the value is automatically "
+                     "format ${variable}, variable can be, by order of "
+                     "priority :\n"
+                     "  1. a color (format: \"color:xxx\")\n"
+                     "  2. an info (format: \"info:name,arguments\", arguments "
+                     "are optional)\n"
+                     "  3. an option (format: \"file.section.option\")\n"
+                     "  4. a local variable in buffer\n"
+                     "  5. a hdata name/variable (the value is automatically "
                      "converted to string), by default \"window\" and \"buffer\" "
                      "point to current window/buffer.\n"
                      "Format for hdata can be one of following:\n"
@@ -6430,6 +6433,7 @@ command_init ()
                      "For name of hdata and variables, please look at \"Plugin "
                      "API reference\", function \"weechat_hdata_get\".\n\n"
                      "Examples:\n"
+                     "  /eval -n ${info:version}                 ==> 0.4.3\n"
                      "  /eval -n ${weechat.look.scroll_amount}   ==> 3\n"
                      "  /eval -n ${window}                       ==> 0x2549aa0\n"
                      "  /eval -n ${window.buffer}                ==> 0x2549320\n"
diff --git a/src/core/wee-eval.c b/src/core/wee-eval.c
index db1ae083c..074cd50b2 100644
--- a/src/core/wee-eval.c
+++ b/src/core/wee-eval.c
@@ -235,8 +235,8 @@ eval_replace_vars_cb (void *data, const char *text)
     struct t_config_option *ptr_option;
     struct t_gui_buffer *ptr_buffer;
     char str_value[64], *value, *pos, *pos1, *pos2, *hdata_name, *list_name;
-    char *tmp;
-    const char *ptr_value;
+    char *tmp, *info_name;
+    const char *ptr_value, *ptr_arguments;
     struct t_hdata *hdata;
     void *pointer;
 
@@ -258,7 +258,27 @@ eval_replace_vars_cb (void *data, const char *text)
         return strdup ((ptr_value) ? ptr_value : "");
     }
 
-    /* 3. look for name of option: if found, return this value */
+    /* 3. look for an info */
+    if (strncmp (text, "info:", 5) == 0)
+    {
+        ptr_value = NULL;
+        ptr_arguments = strchr (text + 5, ',');
+        if (ptr_arguments)
+        {
+            info_name = string_strndup (text + 5, ptr_arguments - text - 5);
+            ptr_arguments++;
+        }
+        else
+            info_name = strdup (text + 5);
+        if (info_name)
+        {
+            ptr_value = hook_info_get (NULL, info_name, ptr_arguments);
+            free (info_name);
+        }
+        return strdup ((ptr_value) ? ptr_value : "");
+    }
+
+    /* 4. look for name of option: if found, return this value */
     if (strncmp (text, "sec.data.", 9) == 0)
     {
         ptr_value = hashtable_get (secure_hashtable_data, text + 9);
@@ -289,7 +309,7 @@ eval_replace_vars_cb (void *data, const char *text)
         }
     }
 
-    /* 4. look for local variable in buffer */
+    /* 5. look for local variable in buffer */
     ptr_buffer = hashtable_get (pointers, "buffer");
     if (ptr_buffer)
     {
@@ -298,7 +318,7 @@ eval_replace_vars_cb (void *data, const char *text)
             return strdup (ptr_value);
     }
 
-    /* 5. look for hdata */
+    /* 6. look for hdata */
     value = NULL;
     hdata_name = NULL;
     list_name = NULL;