core: add values djb2_32 and sum_32 for option weechat.look.nick_color_hash (issue #1394)

25 files changed, 167 insertions, 57 deletions

diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 4c759d615..44d4e34ce 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -31,7 +31,7 @@ New features::
 
 Bug fixes::
 
-  * core: use fixed-width integer for computing nick and hashtable DJB2 key hashes (issue #1394)
+  * core: use fixed-width integer for computing nick and hashtable DJB2 key hashes, add values "djb2_32" and "sum_32" for option weechat.look.nick_color_hash (issue #1394)
   * core: create or update option weechat.notify.xxx when function buffer_set is called with "notify" property (issue #1390)
   * core: fix memory leak in case of error when building content of bar item for display (issue #1384)
   * core: send command line parameter to plugins only if the name starts with the plugin name followed by a colon
diff --git a/ReleaseNotes.adoc b/ReleaseNotes.adoc
index afc42f534..d0be05646 100644
--- a/ReleaseNotes.adoc
+++ b/ReleaseNotes.adoc
@@ -20,6 +20,28 @@ https://weechat.org/files/changelog/ChangeLog-devel.html[ChangeLog]
 [[v2.6]]
 == Version 2.6 (under dev)
 
+[[v2.6_nick_colors]]
+=== Nick colors
+
+The function to compute the colors based on the nick letters has been fixed
+(now the function uses only a 64-bit integer even if the underlying architecture
+is 32-bit).
+
+If you're running WeeChat on a 32-bit architecture and want to keep same colors
+as the previous releases, you can use one of the two new hash values.
+
+If you were using "djb2", you can switch to "djb2_32":
+
+----
+/set weechat.look.nick_color_hash djb2_32
+----
+
+If you were using "sum", you can switch to "sum_32":
+
+----
+/set weechat.look.nick_color_hash sum_32
+----
+
 [[v2.6_python3_default]]
 === Python 3 by default
 
diff --git a/doc/de/autogen/user/weechat_options.adoc b/doc/de/autogen/user/weechat_options.adoc
index 372ec4a62..84bfca609 100644
--- a/doc/de/autogen/user/weechat_options.adoc
+++ b/doc/de/autogen/user/weechat_options.adoc
@@ -921,9 +921,9 @@
 ** Standardwert: `+""+`
 
 * [[option_weechat.look.nick_color_hash]] *weechat.look.nick_color_hash*
-** Beschreibung: pass:none[Gibt an welcher Hash-Algorithmus zur Farbauswahl für Nicks genutzt werden soll: djb2 = Variante des djb2 (Position der Buchstaben innerhalb des Nicks werden berücksichtigt: Anagramme eines Nick erhalten eine andere Farbe), sum = hier ist nur die Anzahl der Buchstaben maßgeblich]
+** Beschreibung: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer]
 ** Typ: integer
-** Werte: djb2, sum
+** Werte: djb2, sum, djb2_32, sum_32
 ** Standardwert: `+djb2+`
 
 * [[option_weechat.look.nick_color_stop_chars]] *weechat.look.nick_color_stop_chars*
diff --git a/doc/en/autogen/user/weechat_options.adoc b/doc/en/autogen/user/weechat_options.adoc
index 644ac5d54..499418035 100644
--- a/doc/en/autogen/user/weechat_options.adoc
+++ b/doc/en/autogen/user/weechat_options.adoc
@@ -921,9 +921,9 @@
 ** default value: `+""+`
 
 * [[option_weechat.look.nick_color_hash]] *weechat.look.nick_color_hash*
-** description: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), sum = sum of letters]
+** description: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer]
 ** type: integer
-** values: djb2, sum
+** values: djb2, sum, djb2_32, sum_32
 ** default value: `+djb2+`
 
 * [[option_weechat.look.nick_color_stop_chars]] *weechat.look.nick_color_stop_chars*
diff --git a/doc/fr/autogen/user/weechat_options.adoc b/doc/fr/autogen/user/weechat_options.adoc
index 85e20e83b..6de8c1b33 100644
--- a/doc/fr/autogen/user/weechat_options.adoc
+++ b/doc/fr/autogen/user/weechat_options.adoc
@@ -921,9 +921,9 @@
 ** valeur par défaut: `+""+`
 
 * [[option_weechat.look.nick_color_hash]] *weechat.look.nick_color_hash*
-** description: pass:none[algorithme de hash utilisé pour trouver la couleur du pseudo : djb2 = variante de djb2 (la position des lettres compte : les anagrammes d'un pseudo ont une couleur différente), sum = somme des lettres]
+** description: pass:none[algorithme de hash utilisé pour trouver la couleur du pseudo : djb2 = variante de djb2 (la position des lettres compte : les anagrammes d'un pseudo ont une couleur différente), sum = somme des lettres, djb2_32 = variante de djb2 en utilisant un entier sur 32 bits au lieu de 64 bits, sum_32 = somme des lettres en utilisant un entier sur 32 bits au lieu de 64 bits]
 ** type: entier
-** valeurs: djb2, sum
+** valeurs: djb2, sum, djb2_32, sum_32
 ** valeur par défaut: `+djb2+`
 
 * [[option_weechat.look.nick_color_stop_chars]] *weechat.look.nick_color_stop_chars*
diff --git a/doc/it/autogen/user/weechat_options.adoc b/doc/it/autogen/user/weechat_options.adoc
index 386e486ca..a1878b9b2 100644
--- a/doc/it/autogen/user/weechat_options.adoc
+++ b/doc/it/autogen/user/weechat_options.adoc
@@ -921,9 +921,9 @@
 ** valore predefinito: `+""+`
 
 * [[option_weechat.look.nick_color_hash]] *weechat.look.nick_color_hash*
-** descrizione: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), sum = sum of letters]
+** descrizione: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer]
 ** tipo: intero
-** valori: djb2, sum
+** valori: djb2, sum, djb2_32, sum_32
 ** valore predefinito: `+djb2+`
 
 * [[option_weechat.look.nick_color_stop_chars]] *weechat.look.nick_color_stop_chars*
diff --git a/doc/ja/autogen/user/weechat_options.adoc b/doc/ja/autogen/user/weechat_options.adoc
index 62f519dee..5075e4d35 100644
--- a/doc/ja/autogen/user/weechat_options.adoc
+++ b/doc/ja/autogen/user/weechat_options.adoc
@@ -921,9 +921,9 @@
 ** デフォルト値: `+""+`
 
 * [[option_weechat.look.nick_color_hash]] *weechat.look.nick_color_hash*
-** 説明: pass:none[ニックネームに対する色を見つけるハッシュアルゴリズム: djb2 = djb2 (文字の位置が重要: ニックネームに同じ色が使われにくくなる) の亜種、sum = 文字の総和]
+** 説明: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer]
 ** タイプ: 整数
-** 値: djb2, sum
+** 値: djb2, sum, djb2_32, sum_32
 ** デフォルト値: `+djb2+`
 
 * [[option_weechat.look.nick_color_stop_chars]] *weechat.look.nick_color_stop_chars*
diff --git a/doc/pl/autogen/user/weechat_options.adoc b/doc/pl/autogen/user/weechat_options.adoc
index 38ff119f2..4e7373e70 100644
--- a/doc/pl/autogen/user/weechat_options.adoc
+++ b/doc/pl/autogen/user/weechat_options.adoc
@@ -921,9 +921,9 @@
 ** domyślna wartość: `+""+`
 
 * [[option_weechat.look.nick_color_hash]] *weechat.look.nick_color_hash*
-** opis: pass:none[algorytm haszujący używany do znalezienia koloru dla nicka: djb2 = odmiana djb2 (pozycja liter ma znaczenie: anagramy nicka mają różne kolory), sum = suma liter]
+** opis: pass:none[hash algorithm used to find the color for a nick: djb2 = variant of djb2 (position of letters matters: anagrams of a nick have different color), djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer]
 ** typ: liczba
-** wartości: djb2, sum
+** wartości: djb2, sum, djb2_32, sum_32
 ** domyślna wartość: `+djb2+`
 
 * [[option_weechat.look.nick_color_stop_chars]] *weechat.look.nick_color_stop_chars*
diff --git a/po/cs.po b/po/cs.po
index 8963ffeb3..69d304b3d 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:31+0200\n"
 "Last-Translator: Ondřej Súkup <mimi.vx@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -3431,8 +3431,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 #, fuzzy
diff --git a/po/de.po b/po/de.po
index 9568a090a..e595192d3 100644
--- a/po/de.po
+++ b/po/de.po
@@ -24,7 +24,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-08-10 16:57+0200\n"
 "Last-Translator: Nils Görs <weechatter@arcor.de>\n"
 "Language-Team: German <kde-i18n-de@kde.org>\n"
@@ -4148,10 +4148,12 @@ msgstr ""
 "möglich die Nicks, für diese Einstellung, ausschließlich in Kleinschrift "
 "aufzuführen"
 
+#, fuzzy
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 "Gibt an welcher Hash-Algorithmus zur Farbauswahl für Nicks genutzt werden "
 "soll: djb2 = Variante des djb2 (Position der Buchstaben innerhalb des Nicks "
diff --git a/po/es.po b/po/es.po
index 5d28bef9f..a48b76342 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:31+0200\n"
 "Last-Translator: Elián Hanisch <lambdae2@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -3585,8 +3585,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 #, fuzzy
diff --git a/po/fr.po b/po/fr.po
index 996bbb07e..5bbad4897 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: 2019-07-29 09:38+0200\n"
-"PO-Revision-Date: 2019-07-29 22:48+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
+"PO-Revision-Date: 2019-08-20 20:17+0200\n"
 "Last-Translator: Sébastien Helleu <flashcode@flashtux.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
 "Language: fr\n"
@@ -4033,12 +4033,16 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 "algorithme de hash utilisé pour trouver la couleur du pseudo : djb2 = "
 "variante de djb2 (la position des lettres compte : les anagrammes d'un "
-"pseudo ont une couleur différente), sum = somme des lettres"
+"pseudo ont une couleur différente), sum = somme des lettres, djb2_32 = "
+"variante de djb2 en utilisant un entier sur 32 bits au lieu de 64 bits, "
+"sum_32 = somme des lettres en utilisant un entier sur 32 bits au lieu de 64 "
+"bits"
 
 msgid ""
 "chars used to stop in nick when computing color with letters of nick (at "
diff --git a/po/hu.po b/po/hu.po
index 4ba81caa5..04db5a806 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:31+0200\n"
 "Last-Translator: Andras Voroskoi <voroskoi@frugalware.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -2999,8 +2999,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 msgid ""
diff --git a/po/it.po b/po/it.po
index a981fbdda..c62ce534d 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:31+0200\n"
 "Last-Translator: Esteban I. Ruiz Moreno <exio4.com@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -3677,8 +3677,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 #, fuzzy
diff --git a/po/ja.po b/po/ja.po
index 52de34857..ee2681c1a 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-06-22 08:40+0200\n"
 "Last-Translator: AYANOKOUZI, Ryuunosuke <i38w7i3@yahoo.co.jp>\n"
 "Language-Team: Japanese <https://github.com/l/weechat/tree/master/"
@@ -3889,10 +3889,12 @@ msgstr ""
 "われます。このため、このオプションのニックネーム部分を小文字だけで書く事もで"
 "きます"
 
+#, fuzzy
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 "ニックネームに対する色を見つけるハッシュアルゴリズム: djb2 = djb2 (文字の位置"
 "が重要: ニックネームに同じ色が使われにくくなる) の亜種、sum = 文字の総和"
diff --git a/po/pl.po b/po/pl.po
index bd63f1f87..15115104e 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -22,7 +22,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: WeeChat\n"
 "Report-Msgid-Bugs-To: flashcode@flashtux.org\n"
-"POT-Creation-Date: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-06-22 08:40+0200\n"
 "Last-Translator: Krzysztof Korościk <soltys@soltys.info>\n"
 "Language-Team: Polish <kde-i18n-doc@kde.org>\n"
@@ -3966,10 +3966,12 @@ msgstr ""
 "dopasowania porównania dokładnego, następnie z małych liter, jest więc "
 "możliwe używanie tylko małych liter w tej opcji"
 
+#, fuzzy
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 "algorytm haszujący używany do znalezienia koloru dla nicka: djb2 = odmiana "
 "djb2 (pozycja liter ma znaczenie: anagramy nicka mają różne kolory), sum = "
diff --git a/po/pt.po b/po/pt.po
index ea3cc0eb1..dd4ad2f99 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:32+0200\n"
 "Last-Translator: Vasco Almeida <vascomalmeida@sapo.pt>\n"
 "Language-Team: Portuguese <>\n"
@@ -3906,10 +3906,12 @@ msgstr ""
 "cor2\"); procura-se pelo nick exato e pelo nick em minúsculas, por isso pode "
 "indicá-los só em minúsculas nesta opção"
 
+#, fuzzy
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 "algoritmo de hash usado para encontra a cor para um nick: djb2 = variante de "
 "djb2 (a posição das letras importa: anagramas de um nick tem cores "
diff --git a/po/pt_BR.po b/po/pt_BR.po
index 0471fde26..0b28f0efd 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:32+0200\n"
 "Last-Translator: Eduardo Elias <camponez@gmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -3600,8 +3600,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 #, fuzzy
diff --git a/po/ru.po b/po/ru.po
index e9bcd46a3..d578cd6f8 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:32+0200\n"
 "Last-Translator: Aleksey V Zapparov AKA ixti <ixti@member.fsf.org>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -3031,8 +3031,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 msgid ""
diff --git a/po/tr.po b/po/tr.po
index 27548d785..43642bd39 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+0200\n"
 "PO-Revision-Date: 2019-05-13 21:32+0200\n"
 "Last-Translator: Hasan Kiran <sunder67@hotmail.com>\n"
 "Language-Team: weechat-dev <weechat-dev@nongnu.org>\n"
@@ -2736,8 +2736,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 msgid ""
diff --git a/po/weechat.pot b/po/weechat.pot
index 03038c16e..adb832659 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: 2019-07-29 09:38+0200\n"
+"POT-Creation-Date: 2019-08-20 16:13+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"
@@ -2731,8 +2731,9 @@ msgstr ""
 
 msgid ""
 "hash algorithm used to find the color for a nick: djb2 = variant of djb2 "
-"(position of letters matters: anagrams of a nick have different color), sum "
-"= sum of letters"
+"(position of letters matters: anagrams of a nick have different color), "
+"djb2_32 = variant of djb2 using 32-bit instead of 64-bit integer, sum = sum "
+"of letters, sum_32 = sum of letters using 32-bit instead of 64-bit integer"
 msgstr ""
 
 msgid ""
diff --git a/src/core/wee-config.c b/src/core/wee-config.c
index d09ed7773..cfde1bdb3 100644
--- a/src/core/wee-config.c
+++ b/src/core/wee-config.c
@@ -3240,8 +3240,10 @@ config_weechat_init_options ()
         "nick_color_hash", "integer",
         N_("hash algorithm used to find the color for a nick: djb2 = variant "
            "of djb2 (position of letters matters: anagrams of a nick have "
-           "different color), sum = sum of letters"),
-        "djb2|sum", 0, 0, "djb2", NULL, 0,
+           "different color), djb2_32 = variant of djb2 using 32-bit instead "
+           "of 64-bit integer, sum = sum of letters, sum_32 = sum of letters "
+           "using 32-bit instead of 64-bit integer"),
+        "djb2|sum|djb2_32|sum_32", 0, 0, "djb2", NULL, 0,
         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
     config_look_nick_color_stop_chars = config_file_new_option (
         weechat_config_file, ptr_section,
diff --git a/src/core/wee-config.h b/src/core/wee-config.h
index d3fc51694..8cf1a61bf 100644
--- a/src/core/wee-config.h
+++ b/src/core/wee-config.h
@@ -58,6 +58,8 @@ enum t_config_look_nick_color_hash
 {
     CONFIG_LOOK_NICK_COLOR_HASH_DJB2 = 0,
     CONFIG_LOOK_NICK_COLOR_HASH_SUM,
+    CONFIG_LOOK_NICK_COLOR_HASH_DJB2_32,
+    CONFIG_LOOK_NICK_COLOR_HASH_SUM_32,
 };
 
 enum t_config_look_prefix_align
diff --git a/src/gui/gui-nick.c b/src/gui/gui-nick.c
index e2685dc5e..9a575cb2a 100644
--- a/src/gui/gui-nick.c
+++ b/src/gui/gui-nick.c
@@ -47,6 +47,7 @@ int
 gui_nick_hash_color (const char *nickname)
 {
     uint64_t color;
+    uint32_t color_32;
     const char *ptr_nick;
 
     if (!nickname || !nickname[0])
@@ -81,6 +82,27 @@ gui_nick_hash_color (const char *nickname)
                 ptr_nick = utf8_next_char (ptr_nick);
             }
             break;
+        case CONFIG_LOOK_NICK_COLOR_HASH_DJB2_32:
+            /* variant of djb2 hash (using 32-bit integer) */
+            color_32 = 5381;
+            while (ptr_nick && ptr_nick[0])
+            {
+                color_32 ^= (color_32 << 5) + (color_32 >> 2)
+                    + utf8_char_int (ptr_nick);
+                ptr_nick = utf8_next_char (ptr_nick);
+            }
+            color = color_32;
+            break;
+        case CONFIG_LOOK_NICK_COLOR_HASH_SUM_32:
+            /* sum of letters (using 32-bit integer) */
+            color_32 = 0;
+            while (ptr_nick && ptr_nick[0])
+            {
+                color_32 += utf8_char_int (ptr_nick);
+                ptr_nick = utf8_next_char (ptr_nick);
+            }
+            color = color_32;
+            break;
     }
 
     return (color % config_num_nick_colors);
diff --git a/tests/unit/gui/test-gui-nick.cpp b/tests/unit/gui/test-gui-nick.cpp
index 198fecd61..fbf8cf425 100644
--- a/tests/unit/gui/test-gui-nick.cpp
+++ b/tests/unit/gui/test-gui-nick.cpp
@@ -58,22 +58,64 @@ TEST(GuiNick, NickHashColor)
 {
     config_file_option_set (config_color_chat_nick_colors, NICK_COLORS, 0);
 
-    config_file_option_set (config_look_nick_color_hash, "dbj2", 0);
+    /* test hash: djb2 */
+    config_file_option_set (config_look_nick_color_hash, "djb2", 0);
+
+    LONGS_EQUAL(0, gui_nick_hash_color (NULL));
+    LONGS_EQUAL(0, gui_nick_hash_color (""));
 
     LONGS_EQUAL(71, gui_nick_hash_color ("a"));
     LONGS_EQUAL(108, gui_nick_hash_color ("abc"));
     LONGS_EQUAL(146, gui_nick_hash_color ("abcdef"));
     LONGS_EQUAL(73, gui_nick_hash_color ("abcdefghi"));
     LONGS_EQUAL(170, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"));
+    LONGS_EQUAL(124, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"
+                                          "abcdefghijklmnopqrstuvwxyz"));
     LONGS_EQUAL(94, gui_nick_hash_color ("zzzzzz"));
 
+    /* test hash: sum */
     config_file_option_set (config_look_nick_color_hash, "sum", 0);
 
+    LONGS_EQUAL(0, gui_nick_hash_color (NULL));
+    LONGS_EQUAL(0, gui_nick_hash_color (""));
+
+    LONGS_EQUAL(97, gui_nick_hash_color ("a"));
+    LONGS_EQUAL(38, gui_nick_hash_color ("abc"));
+    LONGS_EQUAL(85, gui_nick_hash_color ("abcdef"));
+    LONGS_EQUAL(141, gui_nick_hash_color ("abcdefghi"));
+    LONGS_EQUAL(31, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"));
+    LONGS_EQUAL(62, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"
+                                         "abcdefghijklmnopqrstuvwxyz"));
+    LONGS_EQUAL(220, gui_nick_hash_color ("zzzzzz"));
+
+    /* test hash: djb2_32 */
+    config_file_option_set (config_look_nick_color_hash, "djb2_32", 0);
+
+    LONGS_EQUAL(0, gui_nick_hash_color (NULL));
+    LONGS_EQUAL(0, gui_nick_hash_color (""));
+
+    LONGS_EQUAL(71, gui_nick_hash_color ("a"));
+    LONGS_EQUAL(108, gui_nick_hash_color ("abc"));
+    LONGS_EQUAL(146, gui_nick_hash_color ("abcdef"));
+    LONGS_EQUAL(73, gui_nick_hash_color ("abcdefghi"));
+    LONGS_EQUAL(209, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"));
+    LONGS_EQUAL(116, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"
+                                          "abcdefghijklmnopqrstuvwxyz"));
+    LONGS_EQUAL(94, gui_nick_hash_color ("zzzzzz"));
+
+    /* test hash: sum_32 */
+    config_file_option_set (config_look_nick_color_hash, "sum_32", 0);
+
+    LONGS_EQUAL(0, gui_nick_hash_color (NULL));
+    LONGS_EQUAL(0, gui_nick_hash_color (""));
+
     LONGS_EQUAL(97, gui_nick_hash_color ("a"));
     LONGS_EQUAL(38, gui_nick_hash_color ("abc"));
     LONGS_EQUAL(85, gui_nick_hash_color ("abcdef"));
     LONGS_EQUAL(141, gui_nick_hash_color ("abcdefghi"));
     LONGS_EQUAL(31, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"));
+    LONGS_EQUAL(62, gui_nick_hash_color ("abcdefghijklmnopqrstuvwxyz"
+                                         "abcdefghijklmnopqrstuvwxyz"));
     LONGS_EQUAL(220, gui_nick_hash_color ("zzzzzz"));
 
     config_file_option_reset (config_color_chat_nick_colors, 0);