this fixes #747

assets/checksums.txt

@@ -6,7 +6,7 @@
 5baa90e2da7cd6a73edff2010557ee57 assets/ublock/redirect.txt
 890e6b30c6a4cfd2ac5aa1bbe36d30fe assets/ublock/experimental.txt
 40acd039d46d8e9dea7f63fd257d93bd assets/ublock/resources.txt
-0a586f61b5bea73447c1bc1d46791c4c assets/ublock/filter-lists.json
+9426bdf06d69f8d7493306ed135f6819 assets/ublock/filter-lists.json
 50573388b525ede1a920cd4b4ee7fbf0 assets/thirdparties/easylist-downloads.adblockplus.org/easyprivacy.txt
 61cc16cf02e034370f0f47bc17c46551 assets/thirdparties/easylist-downloads.adblockplus.org/easylist.txt
 7f0443f3dcc9abfd47cfbc95ce824ddb assets/thirdparties/mirror1.malwaredomains.com/files/README.md

assets/ublock/filter-lists.json

@@ -3,12 +3,14 @@
 		"off": true,
 		"title": "ISL: Icelandic ABP List",
 		"group": "regions",
+		"lang": "is",
 		"supportURL": "http://adblock.gardar.net/"
 	},
 	"https://adblock.dk/block.csv": {
 		"off": true,
 		"title": "DNK: Schacks Adblock Plus liste",
 		"group": "regions",
+		"lang": "da",
 		"supportURL": "https://henrik.schack.dk/adblock/"
 	},
 	"https://dl.dropboxusercontent.com/u/1289327/abpxfiles/filtri.txt": {
@@ -21,6 +23,7 @@
 		"off": true,
 		"title": "RUS: RU AdList (Дополнительная региональная подписка)",
 		"group": "regions",
+		"lang": "ru",
 		"supportURL": "https://forums.lanik.us/viewforum.php?f=102"
 	},
 	"https://easylist-downloads.adblockplus.org/bitblock.txt": {
@@ -45,24 +48,28 @@
 		"off": true,
 		"title": "CHN: EasyList China (中文)",
 		"group": "regions",
+		"lang": "zh",
 		"supportURL": "http://abpchina.org/forum/forum.php"
 	},
 	"https://easylist-downloads.adblockplus.org/easylistdutch.txt": {
 		"off": true,
 		"title": "NLD: EasyList Dutch",
 		"group": "regions",
+		"lang": "nl",
 		"supportURL": "https://forums.lanik.us/viewforum.php?f=100"
 	},
 	"https://easylist-downloads.adblockplus.org/easylistgermany.txt": {
 		"off": true,
 		"title": "DEU: EasyList Germany",
 		"group": "regions",
+		"lang": "de",
 		"supportURL": "https://forums.lanik.us/viewforum.php?f=90"
 	},
 	"https://easylist-downloads.adblockplus.org/easylistitaly.txt": {
 		"off": true,
 		"title": "ITA: EasyList Italy",
 		"group": "regions",
+		"lang": "it",
 		"supportURL": "https://forums.lanik.us/viewforum.php?f=96"
 	},
 	"easylist-downloads.adblockplus.org/easyprivacy.txt": {
@@ -87,12 +94,14 @@
 		"off": true,
 		"title": "FRA: EasyList Liste FR",
 		"group": "regions",
+		"lang": "fr",
 		"supportURL": "https://forums.lanik.us/viewforum.php?f=91"
 	},
 	"https://notabug.org/latvian-list/adblock-latvian/raw/master/lists/latvian-list.txt": {
 		"off": true,
 		"title": "LVA: Latvian List",
 		"group": "regions",
+		"lang": "lv",
 		"supportURL": "https://notabug.org/latvian-list/adblock-latvian"
 	},
 	"http://hosts-file.net/.%5Cad_servers.txt": {
@@ -105,6 +114,7 @@
 		"off": true,
 		"title": "EST: Eesti saitidele kohandatud filter",
 		"group": "regions",
+		"lang": "et",
 		"supportURL": "http://adblock.ee/"
 	},
 	"https://s3.amazonaws.com/lists.disconnect.me/simple_malvertising.txt": {
@@ -126,6 +136,7 @@
 		"off": true,
 		"title": "POL: polskie filtry do Adblocka i uBlocka",
 		"group": "regions",
+		"lang": "pl",
 		"supportURL": "http://www.certyficate.it/adblock-ublock-polish-filters/"
 	},
 	"https://easylist-downloads.adblockplus.org/antiadblockfilters.txt": {
@@ -138,24 +149,28 @@
 		"off": true,
 		"title": "FIN: Finnish Addition to Easylist",
 		"group": "regions",
+		"lang": "fi",
 		"supportURL": "http://www.juvander.fi/AdblockFinland"
 	},
 	"https://raw.githubusercontent.com/gfmaster/adblock-korea-contrib/master/filter.txt": {
 		"off": true,
 		"title": "KOR: Korean Adblock List",
 		"group": "regions",
+		"lang": "ko",
 		"supportURL": "https://github.com/gfmaster/adblock-korea-contrib"
 	},
 	"https://raw.githubusercontent.com/heradhis/indonesianadblockrules/master/subscriptions/abpindo.txt": {
 		"off": true,
 		"title": "IDN: ABPindo",
 		"group": "regions",
+		"lang": "id",
 		"supportURL": "https://github.com/heradhis/indonesianadblockrules"
 	},
 	"https://raw.githubusercontent.com/k2jp/abp-japanese-filters/master/abpjf.txt": {
 		"off": true,
 		"title": "JPN: ABP Japanese filters (日本用フィルタ)",
 		"group": "regions",
+		"lang": "ja",
 		"supportURL": "https://github.com/k2jp/abp-japanese-filters"
 	},
 	"https://raw.githubusercontent.com/liamja/Prebake/master/obtrusive.txt": {
@@ -168,12 +183,14 @@
 		"off": true,
 		"title": "KOR: YousList",
 		"group": "regions",
+		"lang": "ko",
 		"supportURL": "https://github.com/yous/YousList"
 	},
 	"https://easylist-downloads.adblockplus.org/Liste_AR.txt": {
 		"off": true,
 		"title": "ara: Liste AR",
 		"group": "regions",
+		"lang": "ar",
 		"supportURL": "https://forums.lanik.us/viewforum.php?f=98"
 	},
 	"https://liste-ar-adblock.googlecode.com/hg/Liste_AR.txt": {
@@ -186,6 +203,7 @@
 		"off": true,
 		"title": "LTU: Adblock Plus Lithuania",
 		"group": "regions",
+		"lang": "lt",
 		"supportURL": "http://margevicius.lt/easylist_lithuania/"
 	},
 	"http://malwaredomains.lehigh.edu/files/immortal_domains.txt": {
@@ -210,6 +228,7 @@
 		"off": true,
 		"title": "ISR: EasyList Hebrew",
 		"group": "regions",
+		"lang": "he",
 		"supportURL": "https://github.com/AdBlockPlusIsrael/EasyListHebrew"
 	},
 	"https://raw.githubusercontent.com/cjx82630/cjxlist/master/cjxlist.txt": {
@@ -229,12 +248,14 @@
 		"off": true,
 		"title": "HUN: hufilter",
 		"group": "regions",
+		"lang": "hu",
 		"supportURL": "https://github.com/szpeter80/hufilter"
 	},
 	"https://raw.githubusercontent.com/tomasko126/easylistczechandslovak/master/filters.txt": {
 		"off": true,
 		"title": "CZE, SVK: EasyList Czech and Slovak",
 		"group": "regions",
+		"lang": "cs",
 		"supportURL": "https://github.com/tomasko126/easylistczechandslovak"
 	},
 	"http://someonewhocares.org/hosts/hosts": {
@@ -253,6 +274,7 @@
 		"off": true,
 		"title": "BGR: Bulgarian Adblock list",
 		"group": "regions",
+		"lang": "bg",
 		"supportURL": "http://stanev.org/abp/"
 	},
 	"http://winhelp2002.mvps.org/hosts.txt": {
@@ -283,6 +305,7 @@
 		"off": true,
 		"title": "SWE: Fanboy's Swedish",
 		"group": "regions",
+		"lang": "sv",
 		"supportURL": "https://forums.lanik.us/"
 	},
 	"https://www.fanboy.co.nz/r/fanboy-ultimate.txt": {
@@ -295,12 +318,14 @@
 		"off": true,
 		"title": "TUR: Adguard Turkish Filter",
 		"group": "regions",
+		"lang": "tr",
 		"supportURL": "http://forum.adguard.com/forumdisplay.php?51-Filter-Rules"
 	},
 	"https://www.fanboy.co.nz/fanboy-vietnam.txt": {
 		"off": true,
 		"title": "VIE: Fanboy's Vietnamese",
 		"group": "regions",
+		"lang": "vi",
 		"supportURL": "https://forums.lanik.us/"
 	},
 	"www.malwaredomainlist.com/hostslist/hosts.txt": {
@@ -312,12 +337,14 @@
 		"off": true,
 		"title": "GRC: Greek AdBlock Filter",
 		"group": "regions",
+		"lang": "el",
 		"supportURL": "https://github.com/kargig/greek-adblockplus-filter"
 	},
 	"https://raw.githubusercontent.com/betterwebleon/slovenian-list/master/filters.txt": {
 		"off": true,
 		"title": "SVN: Slovenian List",
 		"group": "regions",
+		"lang": "sl",
 		"supportURL": "https://github.com/betterwebleon/slovenian-list"
 	}
 }

src/js/background.js

@@ -47,6 +47,8 @@ var defaultExternalLists = [
 /******************************************************************************/
 
 return {
+    firstInstall: false,
+
     userSettings: {
         advancedUserEnabled: false,
         autoUpdate: true,

src/js/start.js

@@ -76,6 +76,8 @@ var onAllReady = function() {
     //quickProfiler.stop(0);
 
     vAPI.onLoadAllCompleted();
+
+    µb.firstInstall = false;
 };
 
 /******************************************************************************/
@@ -208,6 +210,9 @@ var onSystemSettingsReady = function(fetched) {
 /******************************************************************************/
 
 var onFirstFetchReady = function(fetched) {
+    // https://github.com/gorhill/uBlock/issues/747
+    µb.firstInstall = fetched.version === '0.0.0.0';
+
     // Order is important -- do not change:
     onSystemSettingsReady(fetched);
     fromFetch(µb.localSettings, fetched);
@@ -250,8 +255,6 @@ var fromFetch = function(to, fetched) {
 
 /******************************************************************************/
 
-return function() {
-
 var onAdminSettingsRestored = function() {
     // Forbid remote fetching of assets
     µb.assets.remoteFetchBarrier += 1;
@@ -278,6 +281,9 @@ return function() {
     vAPI.storage.get(fetchableProps, onFirstFetchReady);
 };
 
+/******************************************************************************/
+
+return function() {
     // https://github.com/gorhill/uBlock/issues/531
     µb.restoreAdminSettings(onAdminSettingsRestored);
 };

src/js/storage.js

@@ -269,6 +269,12 @@
                 availableEntry.title = storedEntry.title;
             }
         }
+
+        // https://github.com/gorhill/uBlock/issues/747
+        if ( µb.firstInstall ) {
+            µb.autoSelectFilterLists(availableLists);
+        }
+
         callback(availableLists);
     };
 
@@ -338,6 +344,25 @@
 
 /******************************************************************************/
 
+µBlock.autoSelectFilterLists = function(lists) {
+    var lang = self.navigator.language.slice(0, 2),
+        list;
+    for ( var path in lists ) {
+        if ( lists.hasOwnProperty(path) === false ) {
+            continue;
+        }
+        list = lists[path];
+        if ( list.off !== true ) {
+            continue;
+        }
+        if ( list.lang === lang ) {
+            list.off = false;
+        }
+    }
+};
+
+/******************************************************************************/
+
 µBlock.createShortUniqueId = function(path) {
     var md5 = YaMD5.hashStr(path);
     return md5.slice(0, 4) + md5.slice(-4);
@@ -347,7 +372,15 @@
 
 /******************************************************************************/
 
+// This is used to be re-entrancy resistant.
+µBlock.loadingFilterLists = false;
+
 µBlock.loadFilterLists = function(callback) {
+    // Callers are expected to check this first.
+    if ( this.loadingFilterLists ) {
+        return;
+    }
+    this.loadingFilterLists = true;
 
     //quickProfiler.start('µBlock.loadFilterLists()');
 
@@ -377,6 +410,7 @@
         callback();
 
         µb.selfieManager.create();
+        µb.loadingFilterLists = false;
     };
 
     var applyCompiledFilters = function(path, compiled) {
@@ -425,8 +459,7 @@
         }
         filterlistsCount = toLoad.length;
         if ( filterlistsCount === 0 ) {
-            onDone();
+            return onDone();
-            return;
         }
 
         var i = toLoad.length;
@@ -644,6 +677,8 @@
     var µb = this;
 
     // We are just reloading the filter lists: we do not want assets to update.
+    // TODO: probably not needed anymore, since filter lists are now always
+    // loaded without update => see `µb.assets.remoteFetchBarrier`.
     this.assets.autoUpdate = false;
 
     var onFiltersReady = function() {