diff --git a/4chan_x.user.js b/4chan_x.user.js
index 926ecb6ab..eee0f3da3 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -753,7 +753,7 @@
                 return 5;
             }
           })();
-          table = $.x("following::br[@clear][1]/preceding::table[" + num + "]", a);
+          table = $.x("following::br[@clear]/preceding::table[" + num + "]", a);
           while ((prev = table.previousSibling) && (prev.nodeName === 'TABLE')) {
             $.rm(prev);
           }
@@ -1604,7 +1604,7 @@
       $('iframe[name=iframe]').src = 'about:blank';
       fileCount = $('#files', qr.el).childElementCount;
       tc = data.textContent;
-      if (tc !== "Post successful!" && !/uploaded!$/.test(tc)) {
+      if (!/successful!|uploaded!$/.test(tc)) {
         if (tc === void 0) {
           data.textContent = "Connection error with sys.4chan.org.";
         }
@@ -1682,7 +1682,7 @@
       text = ">>" + id + "\n";
       selection = window.getSelection();
       if (s = selection.toString()) {
-        selectionID = (_ref = $.x('ancestor::blockquote/preceding-sibling::input', selection.anchorNode)) != null ? _ref.name : void 0;
+        selectionID = (_ref = $.x('ancestor-or-self::blockquote/preceding-sibling::input', selection.anchorNode)) != null ? _ref.name : void 0;
         if (selectionID === id) {
           s = s.replace(/\n/g, '\n>');
           text += ">" + s + "\n";
@@ -2423,8 +2423,7 @@
         _ref = $$('.quotelink', root);
         for (_i = 0, _len = _ref.length; _i < _len; _i++) {
           quote = _ref[_i];
-          if (!(qid = quote.hash.slice(1))) continue;
-          quotes[qid] = quote;
+          if (qid = quote.hash.slice(1)) quotes[qid] = quote;
         }
         id = $('input', root).name;
         a = $.el('a', {
@@ -3157,10 +3156,10 @@
       if (conf['Quick Reply']) qr.init();
       if (conf['Thread Watcher']) watcher.init();
       if (conf['Keybinds']) keybinds.init();
+      if (conf['Reply Navigation'] || conf['Index Navigation']) nav.init();
       if (g.REPLY) {
         if (conf['Thread Updater']) updater.init();
         if (conf['Thread Stats']) threadStats.init();
-        if (conf['Reply Navigation']) nav.init();
         if (conf['Post in Title']) titlePost.init();
         if (conf['Unread Count']) unread.init();
         if (conf['Quick Reply'] && conf['Persistent QR'] && canPost) {
@@ -3171,7 +3170,6 @@
         if (conf['Thread Hiding']) threadHiding.init();
         if (conf['Thread Expansion']) expandThread.init();
         if (conf['Comment Expansion']) expandComment.init();
-        if (conf['Index Navigation']) nav.init();
       }
       nodes = $$('.op, a + table');
       _ref = g.callbacks;
diff --git a/changelog b/changelog
index ea7330a4a..3266202d4 100644
--- a/changelog
+++ b/changelog
@@ -1,4 +1,6 @@
 master
+- mayhem
+  fix selection to quote when selecting started from the end of a line on Firefox
 
 2.23.4
 - mayhem
diff --git a/script.coffee b/script.coffee
index 9f268a90c..c35757fd6 100644
--- a/script.coffee
+++ b/script.coffee
@@ -538,7 +538,7 @@ expandThread =
           when 'b' then 3
           when 't' then 1
           else 5
-        table = $.x "following::br[@clear][1]/preceding::table[#{num}]", a
+        table = $.x "following::br[@clear]/preceding::table[#{num}]", a
         while (prev = table.previousSibling) and (prev.nodeName is 'TABLE')
           $.rm prev
         for backlink in $$ '.op a.backlink'
@@ -1246,7 +1246,7 @@ qr =
     fileCount = $('#files', qr.el).childElementCount
 
     tc = data.textContent
-    if tc isnt "Post successful!" and not /uploaded!$/.test tc # error message
+    unless /successful!|uploaded!$/.test tc # error message, not a successful post
       if tc is undefined
         data.textContent = "Connection error with sys.4chan.org."
       $.extend $('#error', qr.el), data
@@ -1321,7 +1321,7 @@ qr =
 
     selection = window.getSelection()
     if s = selection.toString()
-      selectionID = $.x('ancestor::blockquote/preceding-sibling::input', selection.anchorNode)?.name
+      selectionID = $.x('ancestor-or-self::blockquote/preceding-sibling::input', selection.anchorNode)?.name
       if selectionID is id
         s = s.replace /\n/g, '\n>'
         text += ">#{s}\n"
@@ -1927,9 +1927,9 @@ quoteBacklink =
       quotes = {}
       for quote in $$ '.quotelink', root
         #don't process >>>/b/
-        continue unless qid = quote.hash[1..]
-        #duplicate quotes get overwritten
-        quotes[qid] = quote
+        if qid = quote.hash[1..]
+          #duplicate quotes get overwritten
+          quotes[qid] = quote
       # op or reply
       id = $('input', root).name
       a = $.el 'a',
@@ -2009,7 +2009,7 @@ quoteInline =
 
     body = $.el 'body',
       innerHTML: req.responseText
-    if id == threadID #OP
+    if id is threadID #OP
       op = threading.op $('body > form', body).firstChild
       html = op.innerHTML
     else
@@ -2074,7 +2074,7 @@ quotePreview =
 
     body = $.el 'body',
       innerHTML: req.responseText
-    if id == threadID #OP
+    if id is threadID #OP
       op = threading.op $('body > form', body).firstChild
       html = op.innerHTML
     else
@@ -2509,6 +2509,9 @@ Main =
     if conf['Keybinds']
       keybinds.init()
 
+    if conf['Reply Navigation'] or conf['Index Navigation']
+      nav.init()
+
     if g.REPLY
       if conf['Thread Updater']
         updater.init()
@@ -2516,9 +2519,6 @@ Main =
       if conf['Thread Stats']
         threadStats.init()
 
-      if conf['Reply Navigation']
-        nav.init()
-
       if conf['Post in Title']
         titlePost.init()
 
@@ -2540,9 +2540,6 @@ Main =
       if conf['Comment Expansion']
         expandComment.init()
 
-      if conf['Index Navigation']
-        nav.init()
-
 
     nodes = $$ '.op, a + table'
     for callback in g.callbacks