core: do not automatically add a space when completing "nick:" at the beginning of command line

The space can be added in option weechat.completion.nick_completer
(this is now the default value of the option):

  /set weechat.completion.nick_completer ": "

ChangeLog.adoc

@@ -20,6 +20,7 @@ https://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 
 New features::
 
+  * core: do not automatically add a space when completing "nick:" at the beginning of command line (the space can be added in option weechat.completion.nick_completer)
   * core: add default keys kbd:[Ctrl+F11]/kbd:[Ctrl+F12] to scroll up/down one page in nicklist (same action as kbd:[F11]/kbd:[F12])
   * core: add command line option "-t" (or "--temp-dir") to create a temporary WeeChat home (deleted on exit)
   * api: add functions string_base_encode and string_base_decode, remove functions string_encode_base64 and string_decode_base64

ReleaseNotes.adoc

@@ -20,6 +20,20 @@ https://weechat.org/files/changelog/ChangeLog-devel.html[ChangeLog]
 [[v2.4]]
 == Version 2.4 (under dev)
 
+[[v2.4_nick_completer]]
+=== Nick completer
+
+A space is not added automatically any more when you complete a nick at the
+beginning of command line (expected result is: "nick: ").
+
+The default value of option weechat.completion.nick_completer has been changed
+to add the space by default, so you may have to run this command if you want
+the space to be added automatically:
+
+----
+/set weechat.completion.nick_completer ": "
+----
+
 [[v2.4_api_base64_functions]]
 === Base64 API functions
 

doc/de/autogen/user/weechat_options.adoc

@@ -420,7 +420,7 @@
 ** Beschreibung: pass:none[fügt eine Zeichenkette hinter die Nick-Vervollständigung ein (sofern ein Nickname das erste Wort in der Kommandozeile ist)]
 ** Typ: Zeichenkette
 ** Werte: beliebige Zeichenkette
-** Standardwert: `+":"+`
+** Standardwert: `+": "+`
 
 * [[option_weechat.completion.nick_first_only]] *weechat.completion.nick_first_only*
 ** Beschreibung: pass:none[es wird ausschließlich mit dem ersten, passendem Nick-Namen vervollständigt]

doc/en/autogen/user/weechat_options.adoc

@@ -420,7 +420,7 @@
 ** description: pass:none[string inserted after nick completion (when nick is first word on command line)]
 ** type: string
 ** values: any string
-** default value: `+":"+`
+** default value: `+": "+`
 
 * [[option_weechat.completion.nick_first_only]] *weechat.completion.nick_first_only*
 ** description: pass:none[complete only with first nick found]

doc/fr/autogen/user/weechat_options.adoc

@@ -420,7 +420,7 @@
 ** description: pass:none[chaîne insérée après la complétion du pseudo (quand le pseudo est le premier mot sur la ligne de commande)]
 ** type: chaîne
 ** valeurs: toute chaîne
-** valeur par défaut: `+":"+`
+** valeur par défaut: `+": "+`
 
 * [[option_weechat.completion.nick_first_only]] *weechat.completion.nick_first_only*
 ** description: pass:none[compléter seulement avec le premier pseudo trouvé]

doc/it/autogen/user/weechat_options.adoc

@@ -420,7 +420,7 @@
 ** descrizione: pass:none[stringa inserita dopo il completamento del nick (quando il nick è la prima parola sulla riga di comando)]
 ** tipo: stringa
 ** valori: qualsiasi stringa
-** valore predefinito: `+":"+`
+** valore predefinito: `+": "+`
 
 * [[option_weechat.completion.nick_first_only]] *weechat.completion.nick_first_only*
 ** descrizione: pass:none[completa solo con il primo nick trovato]

doc/ja/autogen/user/weechat_options.adoc

@@ -420,7 +420,7 @@
 ** 説明: pass:none[ニックネーム補完の後に追加する文字列 (ニックネームがコマンドラインの最初にある場合)]
 ** タイプ: 文字列
 ** 値: 未制約文字列
-** デフォルト値: `+":"+`
+** デフォルト値: `+": "+`
 
 * [[option_weechat.completion.nick_first_only]] *weechat.completion.nick_first_only*
 ** 説明: pass:none[最初に見つかったニックネームだけを補完]

doc/pl/autogen/user/weechat_options.adoc

@@ -420,7 +420,7 @@
 ** opis: pass:none[ciąg wstawiany  po dopełnionym nicku (kiedy nick jest pierwszym słowem w linii poleceń)]
 ** typ: ciąg
 ** wartości: dowolny ciąg
-** domyślna wartość: `+":"+`
+** domyślna wartość: `+": "+`
 
 * [[option_weechat.completion.nick_first_only]] *weechat.completion.nick_first_only*
 ** opis: pass:none[dopełniaj tylko pierwszym znalezionym nickiem]

src/core/wee-config.c

@@ -4175,7 +4175,7 @@ config_weechat_init_options ()
         "nick_completer", "string",
         N_("string inserted after nick completion (when nick is first word on "
            "command line)"),
-        NULL, 0, 0, ":", NULL, 0,
+        NULL, 0, 0, ": ", NULL, 0,
         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
     config_completion_nick_first_only = config_file_new_option (
         weechat_config_file, ptr_section,

src/gui/gui-completion.c

@@ -431,6 +431,7 @@ gui_completion_list_add (struct t_gui_completion *completion, const char *word,
                           CONFIG_STRING(config_completion_nick_completer));
                 completion_word->word = strdup (buffer);
                 arraylist_insert (completion->list, index, completion_word);
+                completion->add_space = 0;
             }
             else
             {