this fixes #1128

platform/chromium/vapi-background.js

@@ -319,9 +319,6 @@ vAPI.tabs.open = function(details) {
 
 vAPI.tabs.replace = function(tabId, url) {
     var targetURL = url;
-    if ( typeof targetURL !== 'string' || targetURL === '' ) {
-        return;
-    }
 
     // extension pages
     if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
@@ -340,7 +337,6 @@ vAPI.tabs.replace = function(tabId, url) {
         if ( chrome.runtime.lastError ) {
             return;
         }
-        
     });
 };
 

platform/safari/vapi-background.js

@@ -377,6 +377,24 @@
 
     /******************************************************************************/
 
+    // Replace the URL of a tab. Noop if the tab does not exist.
+
+    vAPI.tabs.replace = function(tabId, url) {
+        var targetURL = url;
+
+        // extension pages
+        if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
+            targetURL = vAPI.getURL(targetURL);
+        }
+
+        var tab = this.stack[tabId];
+        if ( tab ) {
+            tab.url = targetURL;
+        }
+    };
+
+    /******************************************************************************/
+
     vAPI.tabs.remove = function(tabIds) {
         if(tabIds instanceof SafariBrowserTab) {
             tabIds = this.getTabId(tabIds);

src/js/document-blocked.js

@@ -96,6 +96,8 @@ if ( window.history.length > 1 ) {
 uDom('#proceedTemporary').attr('href', details.url).on('click', proceedTemporary);
 uDom('#proceedPermanent').attr('href', details.url).on('click', proceedPermanent);
 
+/******************************************************************************/
+
 })();
 
 /******************************************************************************/

src/js/static-net-filtering.js

@@ -96,8 +96,8 @@ var reURLPostHostnameAnchors = /[\/?#]/;
 
 var pageHostnameRegister = '';
 var requestHostnameRegister = '';
-var filterRegister = null;
+//var filterRegister = null;
-var categoryRegister = '';
+//var categoryRegister = '';
 
 /******************************************************************************/
 

src/js/traffic.js

@@ -219,6 +219,11 @@ var onBeforeRootFrameRequest = function(details) {
     // Filtering
     if ( result === '' && µb.getNetFilteringSwitch(requestURL) ) {
         result = µb.staticNetFilteringEngine.matchString(context);
+        // https://github.com/gorhill/uBlock/issues/1128
+        // Do not block if the match begins after the hostname.
+        if ( result !== '' ) {
+            result = toBlockDocResult(requestURL, requestHostname, result);
+        }
     }
 
     // Log
@@ -246,6 +251,60 @@ var onBeforeRootFrameRequest = function(details) {
 
 /******************************************************************************/
 
+var toBlockDocResult = function(url, hostname, result) {
+    if ( result.charAt(1) !== 'b' ) {
+        return '';
+    }
+
+    // Quick test: if the result starts with `|` or `||`, then this means the
+    // match is before the path part of the URL for sure.
+    // Examples: sb:|http:// sb:||example.com^
+    if ( result.charAt(3) === '|' ) {
+        return result;
+    }
+
+    // Make a regex out of the result
+    var reText = result.slice(3);
+    var pos = reText.indexOf('$');
+    if ( pos > 0 ) {
+        reText = reText.slice(0, pos);
+    }
+
+    // Matches whole URL
+    if ( reText === '*' ) {
+        return result;
+    }
+
+    // We are going to have to take the long way to find out
+    if ( reText.charAt(0) === '/' && reText.slice(-1) === '/' ) {
+        reText = reText.slice(1, -1);
+    } else {
+        reText = reText
+            .replace(/\./g, '\\.')
+            .replace(/\?/g, '\\?')
+            .replace(/^\|\|/, '')
+            .replace(/\^/g, '.')
+            .replace(/^\|/g, '^')
+            .replace(/\|$/g, '$')
+            .replace(/\*/g, '.*');
+    }
+
+    var re = new RegExp(reText, 'gi');
+    var matches = re.exec(url);
+    if ( matches === null ) {
+        return '';
+    }
+
+    // verify that the match starts before the path
+    if ( matches.index < url.indexOf(hostname) + hostname.length ) {
+        return result;
+    }
+
+    return '';
+};
+
+/******************************************************************************/
+
 // Intercept and filter behind-the-scene requests.
 
 var onBeforeBehindTheSceneRequest = function(details) {