Remove unused variables

app/assets/javascripts/discourse/lib/autocomplete.js

@@ -271,7 +271,7 @@ $.fn.autocomplete = function(options) {
   });
 
   return $(this).keydown(function(e) {
-    var c, caretPosition, i, initial, next, nextIsGood, prev, prevIsGood, stopFound, term, total, userToComplete;
+    var c, caretPosition, i, initial, next, prev, prevIsGood, stopFound, term, total, userToComplete;
 
     if(options.allowAny){
       // saves us wiring up a change event as well, keypress is while its pressed
@@ -298,7 +298,6 @@ $.fn.autocomplete = function(options) {
     if ((completeStart === null) && e.which === 8 && options.key) {
       c = Discourse.Utilities.caretPosition(me[0]);
       next = me[0].value[c];
-      nextIsGood = next === void 0 || /\s/.test(next);
       c -= 1;
       initial = c;
       prevIsGood = true;

app/assets/javascripts/discourse/lib/caret_position.js

@@ -71,8 +71,6 @@ $.fn.caretPosition = function(options) {
     "line-height": important("line-height")
   });
 
-  before = void 0;
-  after = void 0;
   pos = options && (options.pos || options.pos === 0) ? options.pos : getCaret(textarea[0]);
   val = textarea.val().replace("\r", "");
   if (options && options.key) {

app/assets/javascripts/discourse/lib/eyeline.js

@@ -21,7 +21,6 @@ Discourse.Eyeline.prototype.update = function() {
       docViewBottom = docViewTop + windowHeight,
       $elements = $(this.selector),
       atBottom = false,
-      foundElement = false,
       bottomOffset = $elements.last().offset(),
       self = this;
 
@@ -29,9 +28,6 @@ Discourse.Eyeline.prototype.update = function() {
     atBottom = (bottomOffset.top <= docViewBottom) && (bottomOffset.top >= docViewTop);
   }
 
-  // Whether we've seen any elements in this search
-  foundElement = false;
-
   return $elements.each(function(i, elem) {
     var $elem = $(elem),
         elemTop = $elem.offset().top,

app/assets/javascripts/discourse/views/actions_history_view.js

@@ -47,6 +47,7 @@ Discourse.ActionsHistoryComponent = Em.Component.extend({
           var key = 'post.actions.people.' + c.get('actionType.name_key');
           if (postUrl) { key = key + "_with_url"; }
 
+          // TODO postUrl might be uninitialized? pick a good default
           buffer.push(" " + I18n.t(key, { icons: iconsHtml, postUrl: postUrl}) + ".");
         }
         renderActionIf('usersCollapsed', 'who-acted', c.get('description'));

app/jobs/scheduled/poll_mailbox.rb

@@ -22,7 +22,7 @@ module Jobs
       begin
         mail_string = mail.pop
         Email::Receiver.new(mail_string).process
-      rescue Email::Receiver::UserNotSufficientTrustLevelError => e
+      rescue Email::Receiver::UserNotSufficientTrustLevelError
         # inform the user about the rejection
         @message = Mail::Message.new(mail_string)
         clientMessage = RejectionMailer.send_trust_level(@message.from, @message.body)