buflist: add option buflist.look.auto_scroll (issue #332)

26 files changed, 370 insertions, 15 deletions

diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 2c940d393..b62d495ed 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -22,6 +22,7 @@ New features::
 
   * api: allow update of variables "scroll_x" and "scroll_y" in bar_window with function hdata_update
   * api: add functions config_option_get_string() and hdata_compare()
+  * buflist: add option buflist.look.auto_scroll (issue #332)
   * buflist: add keys kbd:[F1]/kbd:[F2], kbd:[Alt+F1]/kbd:[Alt+F2] to scroll the buflist bar
 
 Improvements::
diff --git a/doc/de/autogen/user/buflist_options.adoc b/doc/de/autogen/user/buflist_options.adoc
index 0b6512f6d..ca38a1ebd 100644
--- a/doc/de/autogen/user/buflist_options.adoc
+++ b/doc/de/autogen/user/buflist_options.adoc
@@ -80,6 +80,12 @@
 ** Werte: beliebige Zeichenkette
 ** Standardwert: `+"${color:green}${number}${if:${number_displayed}?.: }"+`
 
+* [[option_buflist.look.auto_scroll]] *buflist.look.auto_scroll*
+** Beschreibung: pass:none[automatically scroll the buflist bar to always see the current buffer (this works only with a bar on the left/right position with a "vertical" filling); this value is the percent number of lines displayed before the current buffer when scrolling (-1 = disable scroll); for example 50 means that after a scroll, the current buffer is at the middle of bar, 0 means on top of bar, 100 means at bottom of bar]
+** Typ: integer
+** Werte: -1 .. 100
+** Standardwert: `+50+`
+
 * [[option_buflist.look.display_conditions]] *buflist.look.display_conditions*
 ** Beschreibung: pass:none[Bedingungen wann ein Buffer dargestellt werden soll (Hinweis: Inhalt ist evaluiert, siehe /help buflist); Beispielsweise werden Server-Buffer versteckt, sofern sie mit dem Core-Buffer zusammengefügt worden sind: "${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!=core.weechat) || ${buffer.active}==1)"]
 ** Typ: Zeichenkette
diff --git a/doc/en/autogen/user/buflist_options.adoc b/doc/en/autogen/user/buflist_options.adoc
index d5591b479..5cc2cefc3 100644
--- a/doc/en/autogen/user/buflist_options.adoc
+++ b/doc/en/autogen/user/buflist_options.adoc
@@ -80,6 +80,12 @@
 ** values: any string
 ** default value: `+"${color:green}${number}${if:${number_displayed}?.: }"+`
 
+* [[option_buflist.look.auto_scroll]] *buflist.look.auto_scroll*
+** description: pass:none[automatically scroll the buflist bar to always see the current buffer (this works only with a bar on the left/right position with a "vertical" filling); this value is the percent number of lines displayed before the current buffer when scrolling (-1 = disable scroll); for example 50 means that after a scroll, the current buffer is at the middle of bar, 0 means on top of bar, 100 means at bottom of bar]
+** type: integer
+** values: -1 .. 100
+** default value: `+50+`
+
 * [[option_buflist.look.display_conditions]] *buflist.look.display_conditions*
 ** description: pass:none[conditions to display a buffer (note: content is evaluated, see /help buflist); for example to hide server buffers if they are merged with core buffer: "${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!=core.weechat) || ${buffer.active}==1)"]
 ** type: string
diff --git a/doc/fr/autogen/user/buflist_options.adoc b/doc/fr/autogen/user/buflist_options.adoc
index 2d2857a85..b518bcd43 100644
--- a/doc/fr/autogen/user/buflist_options.adoc
+++ b/doc/fr/autogen/user/buflist_options.adoc
@@ -80,6 +80,12 @@
 ** valeurs: toute chaîne
 ** valeur par défaut: `+"${color:green}${number}${if:${number_displayed}?.: }"+`
 
+* [[option_buflist.look.auto_scroll]] *buflist.look.auto_scroll*
+** description: pass:none[faire défiler automatiquement la barre buflist pour toujours voir le tampon courant (cela fonctionne seulement avec une barre en position gauche/droite avec un remplissage "vertical") ; cette valeur est un pourcentage de lignes affichées avant le tampon courant lors du défilement (-1 = désactiver le défilement) ; par exemple 50 signifie qu'après un défilement, le tampon courant est au milieu de la barre, 0 signifie en haut de la barre et 100 signifie en bas de la barre]
+** type: entier
+** valeurs: -1 .. 100
+** valeur par défaut: `+50+`
+
 * [[option_buflist.look.display_conditions]] *buflist.look.display_conditions*
 ** description: pass:none[conditions pour afficher un tampon (note : le contenu est évalué, voir /help buflist) ; par exemple pour cacher les tampons de serveurs s'ils sont fusionnés avec le tampon "core" : "${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!=core.weechat) || ${buffer.active}==1)"]
 ** type: chaîne
diff --git a/doc/it/autogen/user/buflist_options.adoc b/doc/it/autogen/user/buflist_options.adoc
index c6a4351d7..bedc45859 100644
--- a/doc/it/autogen/user/buflist_options.adoc
+++ b/doc/it/autogen/user/buflist_options.adoc
@@ -80,6 +80,12 @@
 ** valori: qualsiasi stringa
 ** valore predefinito: `+"${color:green}${number}${if:${number_displayed}?.: }"+`
 
+* [[option_buflist.look.auto_scroll]] *buflist.look.auto_scroll*
+** descrizione: pass:none[automatically scroll the buflist bar to always see the current buffer (this works only with a bar on the left/right position with a "vertical" filling); this value is the percent number of lines displayed before the current buffer when scrolling (-1 = disable scroll); for example 50 means that after a scroll, the current buffer is at the middle of bar, 0 means on top of bar, 100 means at bottom of bar]
+** tipo: intero
+** valori: -1 .. 100
+** valore predefinito: `+50+`
+
 * [[option_buflist.look.display_conditions]] *buflist.look.display_conditions*
 ** descrizione: pass:none[conditions to display a buffer (note: content is evaluated, see /help buflist); for example to hide server buffers if they are merged with core buffer: "${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!=core.weechat) || ${buffer.active}==1)"]
 ** tipo: stringa
diff --git a/doc/ja/autogen/user/buflist_options.adoc b/doc/ja/autogen/user/buflist_options.adoc
index a534c926d..a27a5e93e 100644
--- a/doc/ja/autogen/user/buflist_options.adoc
+++ b/doc/ja/autogen/user/buflist_options.adoc
@@ -80,6 +80,12 @@
 ** 値: 未制約文字列
 ** デフォルト値: `+"${color:green}${number}${if:${number_displayed}?.: }"+`
 
+* [[option_buflist.look.auto_scroll]] *buflist.look.auto_scroll*
+** 説明: pass:none[automatically scroll the buflist bar to always see the current buffer (this works only with a bar on the left/right position with a "vertical" filling); this value is the percent number of lines displayed before the current buffer when scrolling (-1 = disable scroll); for example 50 means that after a scroll, the current buffer is at the middle of bar, 0 means on top of bar, 100 means at bottom of bar]
+** タイプ: 整数
+** 値: -1 .. 100
+** デフォルト値: `+50+`
+
 * [[option_buflist.look.display_conditions]] *buflist.look.display_conditions*
 ** 説明: pass:none[バッファの表示条件 (注意: 値は評価されます、/help eval を参照してください); サーババッファがコアバッファにマージされている場合にサーババッファを隠す例: "${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!=core.weechat) || ${buffer.active}==1)"]
 ** タイプ: 文字列
diff --git a/doc/pl/autogen/user/buflist_options.adoc b/doc/pl/autogen/user/buflist_options.adoc
index 0ff785cfd..4731437bb 100644
--- a/doc/pl/autogen/user/buflist_options.adoc
+++ b/doc/pl/autogen/user/buflist_options.adoc
@@ -80,6 +80,12 @@
 ** wartości: dowolny ciąg
 ** domyślna wartość: `+"${color:green}${number}${if:${number_displayed}?.: }"+`
 
+* [[option_buflist.look.auto_scroll]] *buflist.look.auto_scroll*
+** opis: pass:none[automatically scroll the buflist bar to always see the current buffer (this works only with a bar on the left/right position with a "vertical" filling); this value is the percent number of lines displayed before the current buffer when scrolling (-1 = disable scroll); for example 50 means that after a scroll, the current buffer is at the middle of bar, 0 means on top of bar, 100 means at bottom of bar]
+** typ: liczba
+** wartości: -1 .. 100
+** domyślna wartość: `+50+`
+
 * [[option_buflist.look.display_conditions]] *buflist.look.display_conditions*
 ** opis: pass:none[warunki do wyświetlenia buforu (uwaga: zawartość jest przetwarzana, zobacz /help buflist); na przykład w celu ukrycia buforów serwerów, kiedy są połączone z głównym buforem: "${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!=core.weechat) || ${buffer.active}==1)"]
 ** typ: ciąg
diff --git a/po/cs.po b/po/cs.po
index f5e4e52f1..7302ee576 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-05-13 22:06+0200\n"
 "Last-Translator: Ondřej Súkup <mimi.vx@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -4978,6 +4978,15 @@ msgid "%s: %d signals hooked"
 msgstr "    napojené signály:"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/de.po b/po/de.po
index fa52748ba..3598eaf0b 100644
--- a/po/de.po
+++ b/po/de.po
@@ -19,7 +19,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-06-02 20:00+0200\n"
 "Last-Translator: Nils Görs <weechatter@arcor.de>\n"
 "Language-Team: German <kde-i18n-de@kde.org>\n"
@@ -5926,6 +5926,15 @@ msgid "%s: %d signals hooked"
 msgstr "%s: %d Signale hooked"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/es.po b/po/es.po
index b5132b8a2..567cafedc 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-01-06 22:01+0100\n"
 "Last-Translator: Elián Hanisch <lambdae2@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -5192,6 +5192,15 @@ msgid "%s: %d signals hooked"
 msgstr "    señales enganchadas:"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/fr.po b/po/fr.po
index a79cd38ab..4dc0e5b00 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: 2017-06-05 14:55+0200\n"
-"PO-Revision-Date: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
+"PO-Revision-Date: 2017-06-08 06:45+0200\n"
 "Last-Translator: Sébastien Helleu <flashcode@flashtux.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
 "Language: fr\n"
@@ -5799,6 +5799,22 @@ msgid "%s: %d signals hooked"
 msgstr "%s: %d signaux accrochés"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+"faire défiler automatiquement la barre buflist pour toujours voir le tampon "
+"courant (cela fonctionne seulement avec une barre en position gauche/droite "
+"avec un remplissage \"vertical\") ; cette valeur est un pourcentage de "
+"lignes affichées avant le tampon courant lors du défilement (-1 = désactiver "
+"le défilement) ; par exemple 50 signifie qu'après un défilement, le tampon "
+"courant est au milieu de la barre, 0 signifie en haut de la barre et 100 "
+"signifie en bas de la barre"
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/hu.po b/po/hu.po
index 97fe86444..0612c85d9 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-01-06 22:03+0100\n"
 "Last-Translator: Andras Voroskoi <voroskoi@frugalware.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -4516,6 +4516,15 @@ msgid "%s: %d signals hooked"
 msgstr "     üzenetkezelők:\n"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/it.po b/po/it.po
index 88effd5d9..125745363 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-01-06 22:04+0100\n"
 "Last-Translator: Esteban I. Ruiz Moreno <exio4.com@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -5330,6 +5330,15 @@ msgid "%s: %d signals hooked"
 msgstr "    hook sui segnali:"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/ja.po b/po/ja.po
index 875fbc3eb..f31f027a4 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-06-03 09:00+0900\n"
 "Last-Translator: AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>\n"
 "Language-Team: Japanese <https://github.com/l/weechat/tree/master/"
@@ -5526,6 +5526,15 @@ msgid "%s: %d signals hooked"
 msgstr "%s: %d 個のシグナルがフックされました"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/pl.po b/po/pl.po
index f561ab283..cc07a16c5 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-04-08 14:49+0200\n"
 "Last-Translator: Krzysztof Korościk <soltys@soltys.info>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -5654,6 +5654,15 @@ msgid "%s: %d signals hooked"
 msgstr "%s: %d powiązanych sygnałów"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/pt.po b/po/pt.po
index 0d9a42dad..d56e1d7bf 100644
--- a/po/pt.po
+++ b/po/pt.po
@@ -20,7 +20,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-04-08 14:50+0200\n"
 "Last-Translator: Vasco Almeida <vascomalmeida@sapo.pt>\n"
 "Language-Team: Portuguese <>\n"
@@ -5586,6 +5586,15 @@ msgid "%s: %d signals hooked"
 msgstr "    sinais ligados:"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/pt_BR.po b/po/pt_BR.po
index 3ac5fb772..242640278 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2016-09-03 08:24+0200\n"
 "Last-Translator: Eduardo Elias <camponez@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -5132,6 +5132,15 @@ msgid "%s: %d signals hooked"
 msgstr "    sinais relacionados:"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/ru.po b/po/ru.po
index de7f56404..621da81ab 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-01-06 22:06+0100\n"
 "Last-Translator: Aleksey V Zapparov AKA ixti <ixti@member.fsf.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -4554,6 +4554,15 @@ msgid "%s: %d signals hooked"
 msgstr "     обработчики сообщений:\n"
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/tr.po b/po/tr.po
index b4dea0def..21a3612be 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: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2017-01-06 22:07+0100\n"
 "Last-Translator: Hasan Kiran <sunder67@hotmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -4119,6 +4119,15 @@ msgid "%s: %d signals hooked"
 msgstr ""
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/po/weechat.pot b/po/weechat.pot
index 377ec8046..8b7e40071 100644
--- a/po/weechat.pot
+++ b/po/weechat.pot
@@ -21,7 +21,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2017-06-05 14:55+0200\n"
+"POT-Creation-Date: 2017-06-08 06:42+0200\n"
 "PO-Revision-Date: 2014-08-16 10:27+0200\n"
 "Last-Translator: Sébastien Helleu <flashcode@flashtux.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -4104,6 +4104,15 @@ msgid "%s: %d signals hooked"
 msgstr ""
 
 msgid ""
+"automatically scroll the buflist bar to always see the current buffer (this "
+"works only with a bar on the left/right position with a \"vertical\" "
+"filling); this value is the percent number of lines displayed before the "
+"current buffer when scrolling (-1 = disable scroll); for example 50 means "
+"that after a scroll, the current buffer is at the middle of bar, 0 means on "
+"top of bar, 100 means at bottom of bar"
+msgstr ""
+
+msgid ""
 "conditions to display a buffer (note: content is evaluated, see /help "
 "buflist); for example to hide server buffers if they are merged with core "
 "buffer: \"${buffer.hidden}==0 && ((${type}!=server && ${buffer.full_name}!"
diff --git a/src/plugins/buflist/buflist-bar-item.c b/src/plugins/buflist/buflist-bar-item.c
index 232d1fdf0..2612259be 100644
--- a/src/plugins/buflist/buflist-bar-item.c
+++ b/src/plugins/buflist/buflist-bar-item.c
@@ -36,6 +36,8 @@ struct t_hashtable *buflist_hashtable_options = NULL;
 struct t_hashtable *buflist_hashtable_options_conditions = NULL;
 struct t_arraylist *buflist_list_buffers = NULL;
 
+int old_line_number_current_buffer = -1;
+
 
 /*
  * Updates buflist bar item if buflist is enabled.
@@ -49,6 +51,159 @@ buflist_bar_item_update ()
 }
 
 /*
+ * Checks if the bar can be scrolled, the bar must have:
+ * - a position "left" or "right"
+ * - a filling "vertical"
+ * - "buflist" as first item.
+ *
+ * Returns:
+ *   1: bar can be scrolled
+ *   0: bar must not be scrolled
+ */
+
+int
+buflist_bar_item_bar_can_scroll (struct t_gui_bar *bar)
+{
+    const char *ptr_bar_name, *ptr_bar_position, *ptr_bar_filling;
+    int items_count, *items_subcount;
+    char ***items_name, str_option[1024];
+
+    ptr_bar_name = weechat_hdata_string (buflist_hdata_bar, bar, "name");
+    if (!ptr_bar_name)
+        return 0;
+
+    /* check that bar option "position" is "left" or "right" */
+    snprintf (str_option, sizeof (str_option),
+              "weechat.bar.%s.position",
+              ptr_bar_name);
+    ptr_bar_position = weechat_config_string (weechat_config_get (str_option));
+    if (!ptr_bar_position
+        || ((strcmp (ptr_bar_position, "left") != 0)
+            && (strcmp (ptr_bar_position, "right") != 0)))
+    {
+        return 0;
+    }
+
+    /* check that bar option "filling_left_right" is "vertical" */
+    snprintf (str_option, sizeof (str_option),
+              "weechat.bar.%s.filling_left_right",
+              ptr_bar_name);
+    ptr_bar_filling = weechat_config_string (weechat_config_get (str_option));
+    if (!ptr_bar_filling || (strcmp (ptr_bar_filling, "vertical") != 0))
+    {
+        return 0;
+    }
+
+    /* check that "buflist" is the first item in bar */
+    items_count = weechat_hdata_integer (buflist_hdata_bar, bar,
+                                         "items_count");
+    if (items_count <= 0)
+        return 0;
+    items_subcount = weechat_hdata_pointer (buflist_hdata_bar, bar,
+                                            "items_subcount");
+    if (!items_subcount || (items_subcount[0] <= 0))
+        return 0;
+    items_name = weechat_hdata_pointer (buflist_hdata_bar, bar, "items_name");
+    if (!items_name || (strcmp (items_name[0][0], BUFLIST_BAR_ITEM_NAME) != 0))
+        return 0;
+
+    /* OK, bar can be scrolled! */
+    return 1;
+}
+
+/*
+ * Auto-scrolls a bar window displaying buflist item.
+ */
+
+void
+buflist_bar_item_auto_scroll_bar_window (struct t_gui_bar_window *bar_window,
+                                         int line_number)
+{
+    int height, scroll_y, new_scroll_y, auto_scroll;
+    char str_scroll[64];
+    struct t_hashtable *hashtable;
+
+    if (!bar_window || (line_number < 0))
+        return;
+
+    height = weechat_hdata_integer (buflist_hdata_bar_window, bar_window,
+                                    "height");
+    scroll_y = weechat_hdata_integer (buflist_hdata_bar_window, bar_window,
+                                      "scroll_y");
+
+    /* no scroll needed if the line_number is already displayed */
+    if ((line_number >= scroll_y) && (line_number < scroll_y + height))
+        return;
+
+    hashtable = weechat_hashtable_new (8,
+                                       WEECHAT_HASHTABLE_STRING,
+                                       WEECHAT_HASHTABLE_STRING,
+                                       NULL, NULL);
+    if (hashtable)
+    {
+        auto_scroll = weechat_config_integer (buflist_config_look_auto_scroll);
+        new_scroll_y = line_number - (((height - 1) * auto_scroll) / 100);
+        if (new_scroll_y < 0)
+            new_scroll_y = 0;
+        snprintf (str_scroll, sizeof (str_scroll),
+                  "%d", new_scroll_y);
+        weechat_hashtable_set (hashtable, "scroll_y", str_scroll);
+        weechat_hdata_update (buflist_hdata_bar_window, bar_window, hashtable);
+        weechat_hashtable_free (hashtable);
+    }
+}
+
+/*
+ * Auto-scrolls all bars with buflist item as first item.
+ */
+
+void
+buflist_bar_item_auto_scroll (int line_number)
+{
+    struct t_gui_bar *ptr_bar;
+    struct t_gui_bar_window *ptr_bar_window;
+    struct t_gui_window *ptr_window;
+
+    if (line_number < 0)
+        return;
+
+    /* auto-scroll in root bars */
+    ptr_bar = weechat_hdata_get_list (buflist_hdata_bar, "gui_bars");
+    while (ptr_bar)
+    {
+        ptr_bar_window = weechat_hdata_pointer (buflist_hdata_bar, ptr_bar,
+                                                "bar_window");
+        if (ptr_bar_window && buflist_bar_item_bar_can_scroll (ptr_bar))
+        {
+            buflist_bar_item_auto_scroll_bar_window (ptr_bar_window,
+                                                     line_number);
+        }
+        ptr_bar = weechat_hdata_move (buflist_hdata_bar, ptr_bar, 1);
+    }
+
+    /* auto-scroll in window bars */
+    ptr_window = weechat_hdata_get_list (buflist_hdata_window, "gui_windows");
+    while (ptr_window)
+    {
+        ptr_bar_window = weechat_hdata_pointer (buflist_hdata_window,
+                                                ptr_window, "bar_windows");
+        while (ptr_bar_window)
+        {
+            ptr_bar = weechat_hdata_pointer (buflist_hdata_bar_window,
+                                             ptr_bar_window, "bar");
+            if (buflist_bar_item_bar_can_scroll (ptr_bar))
+            {
+                buflist_bar_item_auto_scroll_bar_window (ptr_bar_window,
+                                                         line_number);
+            }
+            ptr_bar_window = weechat_hdata_move (buflist_hdata_bar_window,
+                                                 ptr_bar_window, 1);
+        }
+        ptr_window = weechat_hdata_move (buflist_hdata_window, ptr_window, 1);
+    }
+}
+
+/*
  * Returns content of bar item "buffer_plugin": bar item with buffer plugin.
  */
 
@@ -79,7 +234,7 @@ buflist_bar_item_buflist_cb (const void *pointer, void *data,
     const char *ptr_lag;
     int num_buffers, is_channel, is_private;
     int i, j, length_max_number, current_buffer, number, prev_number, priority;
-    int rc, count;
+    int rc, count, line_number, line_number_current_buffer;
 
     /* make C compiler happy */
     (void) pointer;
@@ -93,6 +248,8 @@ buflist_bar_item_buflist_cb (const void *pointer, void *data,
         return NULL;
 
     prev_number = -1;
+    line_number = 0;
+    line_number_current_buffer = 0;
 
     buflist = weechat_string_dyn_alloc (256);
 
@@ -171,6 +328,8 @@ buflist_bar_item_buflist_cb (const void *pointer, void *data,
         weechat_hashtable_set (buflist_hashtable_extra_vars,
                                "current_buffer",
                                (current_buffer) ? "1" : "0");
+        if (current_buffer)
+            line_number_current_buffer = line_number;
 
         /* buffer number */
         number = weechat_hdata_integer (buflist_hdata_buffer,
@@ -349,6 +508,8 @@ buflist_bar_item_buflist_cb (const void *pointer, void *data,
         free (line);
         if (!rc)
             goto error;
+
+        line_number++;
     }
 
     str_buflist = *buflist;
@@ -362,6 +523,13 @@ end:
     weechat_string_dyn_free (buflist, 0);
     weechat_arraylist_free (buffers);
 
+    if ((line_number_current_buffer != old_line_number_current_buffer)
+        && (weechat_config_integer (buflist_config_look_auto_scroll) >= 0))
+    {
+        buflist_bar_item_auto_scroll (line_number_current_buffer);
+    }
+    old_line_number_current_buffer = line_number_current_buffer;
+
     return str_buflist;
 }
 
diff --git a/src/plugins/buflist/buflist-config.c b/src/plugins/buflist/buflist-config.c
index b24044e87..0c3df353d 100644
--- a/src/plugins/buflist/buflist-config.c
+++ b/src/plugins/buflist/buflist-config.c
@@ -32,6 +32,7 @@ struct t_config_file *buflist_config_file = NULL;
 
 /* buflist config, look section */
 
+struct t_config_option *buflist_config_look_auto_scroll;
 struct t_config_option *buflist_config_look_display_conditions;
 struct t_config_option *buflist_config_look_enabled;
 struct t_config_option *buflist_config_look_mouse_jump_visited_buffer;
@@ -336,6 +337,20 @@ buflist_config_init ()
         return 0;
     }
 
+    buflist_config_look_auto_scroll = weechat_config_new_option (
+        buflist_config_file, ptr_section,
+        "auto_scroll", "integer",
+        N_("automatically scroll the buflist bar to always see the current "
+           "buffer (this works only with a bar on the left/right position "
+           "with a \"vertical\" filling); this value is the percent number "
+           "of lines displayed before the current buffer when scrolling "
+           "(-1 = disable scroll); for example 50 means that after a scroll, "
+           "the current buffer is at the middle of bar, 0 means on top of "
+           "bar, 100 means at bottom of bar"),
+        NULL, -1, 100, "50", NULL, 0,
+        NULL, NULL, NULL,
+        NULL, NULL, NULL,
+        NULL, NULL, NULL);
     buflist_config_look_display_conditions = weechat_config_new_option (
         buflist_config_file, ptr_section,
         "display_conditions", "string",
diff --git a/src/plugins/buflist/buflist-config.h b/src/plugins/buflist/buflist-config.h
index e62cb36c9..263dff9f2 100644
--- a/src/plugins/buflist/buflist-config.h
+++ b/src/plugins/buflist/buflist-config.h
@@ -32,6 +32,7 @@
 
 extern struct t_config_file *buflist_config_file;
 
+extern struct t_config_option *buflist_config_look_auto_scroll;
 extern struct t_config_option *buflist_config_look_display_conditions;
 extern struct t_config_option *buflist_config_look_enabled;
 extern struct t_config_option *buflist_config_look_mouse_jump_visited_buffer;
diff --git a/src/plugins/buflist/buflist.c b/src/plugins/buflist/buflist.c
index 5e87e205c..97d33387c 100644
--- a/src/plugins/buflist/buflist.c
+++ b/src/plugins/buflist/buflist.c
@@ -40,8 +40,11 @@ WEECHAT_PLUGIN_PRIORITY(8000);
 
 struct t_weechat_plugin *weechat_buflist_plugin = NULL;
 
+struct t_hdata *buflist_hdata_window = NULL;
 struct t_hdata *buflist_hdata_buffer = NULL;
 struct t_hdata *buflist_hdata_hotlist = NULL;
+struct t_hdata *buflist_hdata_bar = NULL;
+struct t_hdata *buflist_hdata_bar_window = NULL;
 
 
 /*
@@ -403,8 +406,11 @@ weechat_plugin_init (struct t_weechat_plugin *plugin, int argc, char *argv[])
 
     weechat_plugin = plugin;
 
+    buflist_hdata_window = weechat_hdata_get ("window");
     buflist_hdata_buffer = weechat_hdata_get ("buffer");
     buflist_hdata_hotlist = weechat_hdata_get ("hotlist");
+    buflist_hdata_bar = weechat_hdata_get ("bar");
+    buflist_hdata_bar_window = weechat_hdata_get ("bar_window");
 
     if (!buflist_config_init ())
         return WEECHAT_RC_ERROR;
diff --git a/src/plugins/buflist/buflist.h b/src/plugins/buflist/buflist.h
index 7574f678d..91e3062e3 100644
--- a/src/plugins/buflist/buflist.h
+++ b/src/plugins/buflist/buflist.h
@@ -27,8 +27,11 @@
 
 extern struct t_weechat_plugin *weechat_buflist_plugin;
 
+extern struct t_hdata *buflist_hdata_window;
 extern struct t_hdata *buflist_hdata_buffer;
 extern struct t_hdata *buflist_hdata_hotlist;
+extern struct t_hdata *buflist_hdata_bar;
+extern struct t_hdata *buflist_hdata_bar_window;
 
 extern void buflist_add_bar ();
 extern void buflist_buffer_get_irc_pointers(struct t_gui_buffer *buffer,
diff --git a/src/plugins/weechat-plugin.h b/src/plugins/weechat-plugin.h
index d45dd7344..a78db2cd6 100644
--- a/src/plugins/weechat-plugin.h
+++ b/src/plugins/weechat-plugin.h
@@ -42,6 +42,7 @@ struct t_gui_window;
 struct t_gui_buffer;
 struct t_gui_bar;
 struct t_gui_bar_item;
+struct t_gui_bar_window;
 struct t_gui_completion;
 struct t_gui_nick;
 struct t_gui_nick_group;