spell: allow overriding dictionaries locations

Works for aspell and myspell (hunspell) when using enchant.

src/plugins/spell/spell-command.c

@@ -157,6 +157,9 @@ spell_command_speller_list_dicts (void)
                                NULL);
 #else
     config = new_aspell_config ();
+#ifdef ASPELL_DICT_DIR
+    aspell_config_replace (config, "dict-dir", ASPELL_DICT_DIR);
+#endif
     list = get_aspell_dict_info_list (config);
     elements = aspell_dict_info_list_elements (list);
 

src/plugins/spell/spell-completion.c

@@ -107,6 +107,9 @@ spell_completion_dicts_cb (const void *pointer, void *data,
                                completion);
 #else
     config = new_aspell_config ();
+#ifdef ASPELL_DICT_DIR
+    aspell_config_replace (config, "dict-dir", ASPELL_DICT_DIR);
+#endif
     list = get_aspell_dict_info_list (config);
     elements = aspell_dict_info_list_elements (list);
 

src/plugins/spell/spell-speller.c

@@ -65,6 +65,9 @@ spell_speller_dict_supported (const char *lang)
     rc = 0;
 
     config = new_aspell_config ();
+#ifdef ASPELL_DICT_DIR
+    aspell_config_replace (config, "dict-dir", ASPELL_DICT_DIR);
+#endif
     list = get_aspell_dict_info_list (config);
     elements = aspell_dict_info_list_elements (list);
 
@@ -174,6 +177,9 @@ spell_speller_new (const char *lang)
     /* create a speller instance for the newly created cell */
     config = new_aspell_config ();
     aspell_config_replace (config, "lang", lang);
+#ifdef ASPELL_DICT_DIR
+    aspell_config_replace (config, "dict-dir", ASPELL_DICT_DIR);
+#endif
 #endif /* USE_ENCHANT */
 
     /* apply all options */

src/plugins/spell/spell.c

@@ -1180,6 +1180,9 @@ weechat_plugin_init (struct t_weechat_plugin *plugin, int argc, char *argv[])
     broker = enchant_broker_init ();
     if (!broker)
         return WEECHAT_RC_ERROR;
+#ifdef ENCHANT_MYSPELL_DICT_DIR
+    enchant_broker_set_param(broker, "enchant.myspell.dictionary.path", ENCHANT_MYSPELL_DICT_DIR);
+#endif
 #endif /* USE_ENCHANT */
 
     if (!spell_speller_init ())