Merge branch 'ce_upstream' into 'master'

CE upstream



See merge request !156

CHANGELOG

@@ -4,6 +4,7 @@ v 8.5.0 (unreleased)
   - Ensure rake tasks that don't need a DB connection can be run without one
   - Add "visibility" flag to GET /projects api endpoint
   - Ignore binary files in code search to prevent Error 500 (Stan Hu)
+  - Render sanitized SVG images (Stan Hu)
   - Upgrade gitlab_git to 7.2.23 to fix commit message mentions in first branch push
   - New UI for pagination
   - Don't prevent sign out when 2FA enforcement is enabled and user hasn't yet
@@ -14,13 +15,21 @@ v 8.5.0 (unreleased)
   - Display 404 error on group not found
   - Track project import failure
   - Fix visibility level text in admin area (Zeger-Jan van de Weg)
+  - Warn admin during OAuth of granting admin rights (Zeger-Jan van de Weg)
   - Update the ExternalIssue regex pattern (Blake Hitchcock)
+  - Optimized performance of finding issues to be closed by a merge request
   - Revert "Add IP check against DNSBLs at account sign-up"
   - Deprecate API "merge_request/:merge_request_id/comments". Use "merge_requests/:merge_request_id/notes" instead
   - Deprecate API "merge_request/:merge_request_id/...". Use "merge_requests/:merge_request_id/..." instead
+  - Mark inline difference between old and new paths when a file is renamed
 
 v 8.4.3
-  - Increase lfs_objects size column to 8-byte integer to allow files larger than 2.1GB
+  - Increase lfs_objects size column to 8-byte integer to allow files larger
+    than 2.1GB
+  - Correctly highlight MR diff when MR has merge conflicts
+  - Fix highlighting in blame view
+  - Update sentry-raven gem to prevent "Not a git repository" console output
+    when running certain commands
 
 v 8.4.2
   - Bump required gitlab-workhorse version to bring in a fix for missing
@@ -31,7 +40,6 @@ v 8.4.2
     improvement when checking if a repository was empty
   - Add instrumentation for Gitlab::Git::Repository instance methods so we can
     track them in Performance Monitoring.
-  - Correctly highlight MR diff when MR has merge conflicts
   - Increase contrast between highlighted code comments and inline diff marker
   - Fix method undefined when using external commit status in builds
   - Fix highlighting in blame view.
@@ -41,6 +49,7 @@ v 8.4.1
     and Nokogiri (1.6.7.2)
   - Fix redirect loop during import
   - Fix diff highlighting for all syntax themes
+  - Delete project and associations in a background worker
 
 v 8.4.0 (unreleased)
   - Hide issues settings when issues are disabled (Hannes Rosenögger)
@@ -90,7 +99,7 @@ v 8.4.0
   - Show 'All' tab by default in the builds page
   - Add Open Graph and Twitter Card data to all pages
   - Fix API project lookups when querying with a namespace with dots (Stan Hu)
-  - Enable forcing Two-Factor authentication sitewide, with optional grace period
+  - Enable forcing Two-factor authentication sitewide, with optional grace period
   - Import GitHub Pull Requests into GitLab
   - Change single user API endpoint to return more detailed data (Michael Potthoff)
   - Update version check images to use SVG

CONTRIBUTING.md

@@ -147,7 +147,7 @@ sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
 sudo gitlab-rake gitlab:env:info)
 
 (For installations from source run and paste the output of:
-sudo -u git -H bundle exec rake gitlab:env:info)
+sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production)
 
 ## Possible fixes
 
@@ -255,6 +255,8 @@ For examples of feedback on merge requests please look at already
 request feel free to mention one of the Merge Marshalls of the [core team][].
 Please ensure that your merge request meets the contribution acceptance criteria.
 
+When having your code reviewed and when reviewing merge requests please take the [thoughtbot code review guidelines](https://github.com/thoughtbot/guides/tree/master/code-review) into account.
+
 ## Definition of done
 
 If you contribute to GitLab please know that changes involve more than just

Gemfile

@@ -186,6 +186,9 @@ gem "underscore-rails", "~> 1.8.0"
 gem "sanitize", '~> 2.0'
 gem 'babosa', '~> 1.0.2'
 
+# Sanitizes SVG input
+gem "loofah", "~> 2.0.3"
+
 # Protect against bruteforcing
 gem "rack-attack", '~> 4.3.1'
 

Gemfile.lock

@@ -982,6 +982,7 @@ DEPENDENCIES
   jquery-ui-rails (~> 5.0.0)
   kaminari (~> 0.16.3)
   letter_opener (~> 1.1.2)
+  loofah (~> 2.0.3)
   mail_room (~> 0.6.1)
   method_source (~> 0.8)
   minitest (~> 5.7.0)

app/assets/javascripts/behaviors/autosize.js.coffee

+#= require jquery.ba-resize
 #= require autosize
 
 $ ->
-  autosize($('.js-autosize'))
+  $fields = $('.js-autosize')
+
+  $fields.on 'autosize:resized', ->
+    $field = $(@)
+    $field.data('height', $field.outerHeight())
+
+  $fields.on 'resize.autosize', ->
+    $field = $(@)
+
+    if $field.data('height') != $field.outerHeight()
+      $field.data('height', $field.outerHeight())
+      autosize.destroy($field)
+      $field.css('max-height', window.outerHeight)
+
+  autosize($fields)
+  autosize.update($fields)
+
+  $fields.css('resize', 'vertical')

app/assets/stylesheets/framework/files.scss

@@ -36,6 +36,20 @@
       }
     }
 
+    .filename {
+      &.old {
+        span.idiff {
+          background-color: #f8cbcb;
+        }
+      }
+
+      &.new {
+        span.idiff {
+          background-color: #a6f3a6;
+        }
+      }
+    }
+
     .left-options {
       margin-top: -3px;
     }
@@ -158,3 +172,15 @@
     }
   }
 }
+
+span.idiff {
+  &.left {
+    border-top-left-radius: 2px;
+    border-bottom-left-radius: 2px;
+  }
+
+  &.right {
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+  }
+}

app/assets/stylesheets/framework/markdown_area.scss

@@ -83,7 +83,7 @@
   background: #FFF;
   border: 1px solid #ddd;
   min-height: 140px;
-  max-height: 430px;
+  max-height: 500px;
   padding: 5px;
   box-shadow: none;
   width: 100%;

app/assets/stylesheets/pages/note_form.scss

@@ -147,7 +147,7 @@
 .edit_note {
   .markdown-area {
     min-height: 140px;
-    max-height: 430px;
+    max-height: 500px;
   }
   .note-form-actions {
     background: transparent;

app/controllers/projects_controller.rb

@@ -94,6 +94,10 @@ class ProjectsController < ApplicationController
       return
     end
 
+    if @project.pending_delete?
+      flash[:alert] = "Project queued for delete."
+    end
+
     respond_to do |format|
       format.html do
         if @project.repository_exists?
@@ -121,8 +125,8 @@ class ProjectsController < ApplicationController
   def destroy
     return access_denied! unless can?(current_user, :remove_project, @project)
 
-    ::Projects::DestroyService.new(@project, current_user, {}).execute
-    flash[:alert] = "Project '#{@project.name}' was deleted."
+    ::Projects::DestroyService.new(@project, current_user, {}).pending_delete!
+    flash[:alert] = "Project '#{@project.name}' will be deleted."
 
     redirect_to dashboard_projects_path
   rescue Projects::DestroyService::DestroyError => ex

app/helpers/blob_helper.rb

@@ -126,4 +126,16 @@ module BlobHelper
       blob.size
     end
   end
+
+  def blob_svg?(blob)
+    blob.language && blob.language.name == 'SVG'
+  end
+
+  # SVGs can contain malicious JavaScript; only include whitelisted
+  # elements and attributes. Note that this whitelist is by no means complete
+  # and may omit some elements.
+  def sanitize_svg(blob)
+    blob.data = Loofah.scrub_fragment(blob.data, :strip).to_xml
+    blob
+  end
 end

app/helpers/diff_helper.rb

 module DiffHelper
+  def mark_inline_diffs(old_line, new_line)
+    old_diffs, new_diffs = Gitlab::Diff::InlineDiff.new(old_line, new_line).inline_diffs
+
+    marked_old_line = Gitlab::Diff::InlineDiffMarker.new(old_line).mark(old_diffs)
+    marked_new_line = Gitlab::Diff::InlineDiffMarker.new(new_line).mark(new_diffs)
+
+    [marked_old_line, marked_new_line]
+  end
+
   def diff_view
     params[:view] == 'parallel' ? 'parallel' : 'inline'
   end
@@ -55,7 +64,7 @@ module DiffHelper
     if line.blank?
       "  ".html_safe
     else
-      line.html_safe
+      line
     end
   end
 

app/models/broadcast_message.rb

@@ -26,8 +26,10 @@ class BroadcastMessage < ActiveRecord::Base
   default_value_for :font,  '#FFFFFF'
 
   def self.current
+    Rails.cache.fetch("broadcast_message_current", expires_in: 1.minute) do
       where("ends_at > :now AND starts_at <= :now", now: Time.zone.now).last
     end
+  end
 
   def active?
     started? && !ended?

app/models/commit.rb

@@ -68,18 +68,18 @@ class Commit
 
   # Pattern used to extract commit references from text
   #
-  # The SHA can be between 6 and 40 hex characters.
+  # The SHA can be between 7 and 40 hex characters.
   #
   # This pattern supports cross-project references.
   def self.reference_pattern
     %r{
       (?:#{Project.reference_pattern}#{reference_prefix})?
-      (?<commit>\h{6,40})
+      (?<commit>\h{7,40})
     }x
   end
 
   def self.link_reference_pattern
-    super("commit", /(?<commit>\h{6,40})/)
+    super("commit", /(?<commit>\h{7,40})/)
   end
 
   def to_reference(from_project = nil)

app/models/commit_range.rb

@@ -32,8 +32,8 @@ class CommitRange
   PATTERN = /#{REF_PATTERN}\.{2,3}#{REF_PATTERN}/
 
   # In text references, the beginning and ending refs can only be SHAs
-  # between 6 and 40 hex characters.
-  STRICT_PATTERN = /\h{6,40}\.{2,3}\h{6,40}/
+  # between 7 and 40 hex characters.
+  STRICT_PATTERN = /\h{7,40}\.{2,3}\h{7,40}/
 
   def self.reference_prefix
     '@'

app/models/merge_request.rb

@@ -350,10 +350,10 @@ class MergeRequest < ActiveRecord::Base
   # Return the set of issues that will be closed if this merge request is accepted.
   def closes_issues(current_user = self.author)
     if target_branch == project.default_branch
-      issues = commits.flat_map { |c| c.closes_issues(current_user) }
-      issues.push(*Gitlab::ClosingIssueExtractor.new(project, current_user).
-                  closed_by_message(description))
-      issues.uniq(&:id)
+      messages = commits.map(&:safe_message) << description
+
+      Gitlab::ClosingIssueExtractor.new(project, current_user).
+        closed_by_message(messages.join("\n"))
     else
       []
     end

app/models/project.rb

@@ -36,6 +36,7 @@
 #  build_coverage_regex   :string
 #  build_allow_git_fetch  :boolean          default(TRUE), not null
 #  build_timeout          :integer          default(3600), not null
+#  pending_delete         :boolean
 #
 
 require 'carrierwave/orm/activerecord'

app/services/delete_user_service.rb

@@ -13,7 +13,7 @@ class DeleteUserService
       user.personal_projects.each do |project|
         # Skip repository removal because we remove directory with namespace
         # that contain all this repositories
-        ::Projects::DestroyService.new(project, current_user, skip_repo: true).execute
+        ::Projects::DestroyService.new(project, current_user, skip_repo: true).pending_delete!
       end
 
       user.destroy

app/services/destroy_group_service.rb

@@ -9,7 +9,7 @@ class DestroyGroupService
     @group.projects.each do |project|
       # Skip repository removal because we remove directory with namespace
       # that contain all this repositories
-      ::Projects::DestroyService.new(project, current_user, skip_repo: true).execute
+      ::Projects::DestroyService.new(project, current_user, skip_repo: true).pending_delete!
     end
 
     @group.destroy

app/services/projects/destroy_service.rb

@@ -6,6 +6,12 @@ module Projects
 
     DELETED_FLAG = '+deleted'
 
+    def pending_delete!
+      project.update_attribute(:pending_delete, true)
+
+      ProjectDestroyWorker.perform_in(1.minute, project.id, current_user.id, params)
+    end
+
     def execute
       return false unless can?(current_user, :remove_project, project)
 

app/views/admin/application_settings/_form.html.haml

@@ -105,14 +105,14 @@
             = f.check_box :signin_enabled
             Sign-in enabled
     .form-group
-      = f.label :two_factor_authentication, 'Two-Factor authentication', class: 'control-label col-sm-2'
+      = f.label :two_factor_authentication, 'Two-factor authentication', class: 'control-label col-sm-2'
       .col-sm-10
         .checkbox
           = f.label :require_two_factor_authentication do
             = f.check_box :require_two_factor_authentication
-            Require all users to setup Two-Factor authentication
+            Require all users to setup Two-factor authentication
     .form-group
-      = f.label :two_factor_authentication, 'Two-Factor grace period (hours)', class: 'control-label col-sm-2'
+      = f.label :two_factor_authentication, 'Two-factor grace period (hours)', class: 'control-label col-sm-2'
       .col-sm-10
         = f.number_field :two_factor_grace_period, min: 0, class: 'form-control', placeholder: '0'
         .help-block Amount of time (in hours) that users are allowed to skip forced configuration of two-factor authentication

app/views/doorkeeper/authorizations/new.html.haml

@@ -4,6 +4,15 @@
     Authorize
     %strong.text-info= @pre_auth.client.name
     to use your account?
+
+  - if current_user.admin?
+    .text-warning.prepend-top-20
+      %p
+        = icon("exclamation-triangle fw")
+        You are an admin, which means granting access to
+        %strong #{@pre_auth.client.name}
+        will allow them to interact with GitLab as an admin as well. Proceed with caution.
+
   - if @pre_auth.scopes
     #oauth-permissions
       %p This application will be able to:

app/views/profiles/two_factor_auths/new.html.haml

 - page_title 'Two-factor Authentication', 'Account'
 
-%h2.page-title Two-Factor Authentication (2FA)
+%h2.page-title Two-factor Authentication (2FA)
 %p
   Download the Google Authenticator application from App Store for iOS or Google
   Play for Android and scan this code.

app/views/projects/blob/_blob.html.haml

@@ -35,6 +35,9 @@
     - if blob.lfs_pointer?
       = render "download", blob: blob
     - elsif blob.text?
+      - if blob_svg?(blob)
+        = render "image", blob: sanitize_svg(blob)
+      - else
         = render "text", blob: blob
     - elsif blob.image?
       = render "image", blob: blob

app/views/projects/diffs/_file.html.haml

@@ -7,16 +7,20 @@
           = submodule_link(blob, @commit.id, project.repository)
     - else
       = blob_icon blob.mode, blob.name
+
       = link_to "#diff-#{i}" do
+        - if diff_file.renamed_file
+          - old_path, new_path = mark_inline_diffs(diff_file.old_path, diff_file.new_path)
+          %strong.filename.old
+            = old_path
+          →
+          %strong.filename.new
+            = new_path
+        - else
           %strong
             = diff_file.new_path
-
           - if diff_file.deleted_file
             deleted
-      - elsif diff_file.renamed_file
-        renamed from
-        %strong
-          = diff_file.old_path
 
       - if diff_file.mode_changed?
         %small

app/workers/project_destroy_worker.rb

+class ProjectDestroyWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: :default
+
+  def perform(project_id, user_id, params)
+    begin
+      project = Project.find(project_id)
+    rescue ActiveRecord::RecordNotFound
+      return
+    end
+
+    user = User.find(user_id)
+
+    ::Projects::DestroyService.new(project, user, params).execute
+  end
+end

config/routes.rb

@@ -532,7 +532,7 @@ Rails.application.routes.draw do
         end
 
         resource  :avatar, only: [:show, :destroy]
-        resources :commit, only: [:show], constraints: { id: /[[:alnum:]]{6,40}/ } do
+        resources :commit, only: [:show], constraints: { id: /\h{7,40}/ } do
           member do
             get :branches
             get :builds

db/migrate/20160122185421_add_pending_delete_to_project.rb

+class AddPendingDeleteToProject < ActiveRecord::Migration
+  def change
+    add_column :projects, :pending_delete, :boolean, default: false
+  end
+end

db/schema.rb

@@ -789,6 +789,7 @@ ActiveRecord::Schema.define(version: 20160129075828) do
     t.boolean  "build_allow_git_fetch",            default: true,     null: false
     t.integer  "build_timeout",                    default: 3600,     null: false
     t.boolean  "mirror_trigger_builds",            default: false,    null: false
+    t.boolean  "pending_delete",                   default: false
   end
 
   add_index "projects", ["builds_enabled", "shared_runners_enabled"], name: "index_projects_on_builds_enabled_and_shared_runners_enabled", using: :btree

doc/api/builds.md

@@ -18,7 +18,7 @@ GET /projects/:id/builds
 ### Example of request
 
 ```
-curl -H "PRIVATE_TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds"
+curl -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds"
 ```
 
 ### Example of response
@@ -123,7 +123,7 @@ GET /projects/:id/repository/commits/:sha/builds
 ### Example of request
 
 ```
-curl -H "PRIVATE_TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/repository/commits/0ff3ae198f8601a285adcf5c0fff204ee6fba5fd/builds"
+curl -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/repository/commits/0ff3ae198f8601a285adcf5c0fff204ee6fba5fd/builds"
 ```
 
 ### Example of response
@@ -213,7 +213,7 @@ GET /projects/:id/builds/:build_id
 ### Example of request
 
 ```
-curl -H "PRIVATE_TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds/8"
+curl -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds/8"
 ```
 
 ### Example of response
@@ -277,7 +277,7 @@ POST /projects/:id/builds/:build_id/cancel
 ### Example of request
 
 ```
-curl -X POST -H "PRIVATE_TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds/1/cancel"
+curl -X POST -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds/1/cancel"
 ```
 
 ### Example of response
@@ -327,7 +327,7 @@ POST /projects/:id/builds/:build_id/retry
 ### Example of request
 
 ```
-curl -X POST -H "PRIVATE_TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds/1/retry"
+curl -X POST -H "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/1/builds/1/retry"
 ```
 
 ### Example of response

doc/security/README.md

@@ -7,4 +7,4 @@
 - [Reset your root password](reset_root_password.md)
 - [User File Uploads](user_file_uploads.md)
 - [How we manage the CRIME vulnerability](crime_vulnerability.md)
-- [Enforce Two-Factor authentication](two_factor_authentication.md)
+- [Enforce Two-factor authentication](two_factor_authentication.md)

doc/workflow/gitlab_flow.md

@@ -152,9 +152,10 @@ The name of this branch should start with the issue number, for example '15-requ
 
 When you are done or want to discuss the code you open a merge request.
 This is an online place to discuss the change and review the code.
-Creating a branch is a manual action since you do not always want to merge a new branch you push, it could be a long-running environment or release branch.
-If you create the merge request but do not assign it to anyone it is a 'work-in-process' merge request.
+Opening a merge request is a manual action since you do not always want to merge a new branch you push, it could be a long-running environment or release branch.
+If you open the merge request but do not assign it to anyone it is a 'Work In Progress' merge request.
 These are used to discuss the proposed implementation but are not ready for inclusion in the master branch yet.
+_Pro tip:_ Start the title of the merge request with `[WIP]` or `WIP:` to prevent it from being merged before it's ready.
 
 When the author thinks the code is ready the merge request is assigned to reviewer.
 The reviewer presses the merge button when they think the code is ready for inclusion in the master branch.
@@ -185,7 +186,7 @@ If you have an issue that spans across multiple repositories, the best thing is
 
 ![Vim screen showing the rebase view](rebase.png)
 
-With git you can use an interactive rebase (rebase -i) to squash multiple commits into one and reorder them.
+With git you can use an interactive rebase (`rebase -i`) to squash multiple commits into one and reorder them.
 This functionality is useful if you made a couple of commits for small changes during development and want to replace them with a single commit or if you want to make the order more logical.
 However you should never rebase commits you have pushed to a remote server.
 Somebody can have referred to the commits or cherry-picked them.

features/project/source/browse_files.feature

@@ -320,3 +320,13 @@ Feature: Project Source Browse Files
     Then I should see download link and object size
     And I should not see lfs pointer details
     And I should see buttons for allowed commands
+
+  @javascript
+  Scenario: I preview an SVG file
+    Given I click on "Upload file" link in repo
+    And I upload a new SVG file
+    And I fill the upload file commit message
+    And I fill the new branch name
+    And I click on "Upload file"
+    Given I visit the SVG file
+    Then I can see the new rendered SVG image

features/steps/project/source/browse_files.rb

@@ -351,6 +351,19 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
     expect(page).to have_content "You're not allowed to make changes to this project directly. A fork of this project has been created that you can make changes in, so you can submit a merge request."
   end
 
+  # SVG files
+  step 'I upload a new SVG file' do
+    drop_in_dropzone test_svg_file
+  end
+
+  step 'I visit the SVG file' do
+    visit namespace_project_blob_path(@project.namespace, @project, 'new_branch_name/logo_sample.svg')
+  end
+
+  step 'I can see the new rendered SVG image' do
+    expect(find('.file-content')).to have_css('img')
+  end
+
   private
 
   def set_new_content
@@ -410,4 +423,8 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
   def test_image_file
     File.join(Rails.root, 'spec', 'fixtures', 'banana_sample.gif')
   end
+
+  def test_svg_file
+    File.join(Rails.root, 'spec', 'fixtures', 'logo_sample.svg')
+  end
 end

lib/api/projects.rb

@@ -246,7 +246,7 @@ module API
       #   DELETE /projects/:id
       delete ":id" do
         authorize! :remove_project, user_project
-        ::Projects::DestroyService.new(user_project, current_user, {}).execute
+        ::Projects::DestroyService.new(user_project, current_user, {}).pending_delete!
       end
 
       # Mark this project as forked from another

lib/gitlab/diff/highlight.rb

@@ -21,13 +21,13 @@ module Gitlab
           # ignore highlighting for "match" lines
           next diff_line if diff_line.type == 'match' || diff_line.type == 'nonewline'
 
-          rich_line = highlight_line(diff_line, i)
+          rich_line = highlight_line(diff_line) || diff_line.text
 
           if line_inline_diffs = inline_diffs[i]
             rich_line = InlineDiffMarker.new(diff_line.text, rich_line).mark(line_inline_diffs)
           end
 
-          diff_line.text = rich_line.html_safe
+          diff_line.text = rich_line
 
           diff_line
         end
@@ -35,8 +35,8 @@ module Gitlab
 
       private
 
-      def highlight_line(diff_line, index)
-        return html_escape(diff_line.text) unless diff_file && diff_file.diff_refs
+      def highlight_line(diff_line)
+        return unless diff_file && diff_file.diff_refs
 
         line_prefix = diff_line.text.match(/\A(.)/) ? $1 : ' '
 
@@ -49,11 +49,11 @@ module Gitlab
 
         # Only update text if line is found. This will prevent
         # issues with submodules given the line only exists in diff content.
-        rich_line ? line_prefix + rich_line : html_escape(diff_line.text)
+        "#{line_prefix}#{rich_line}".html_safe if rich_line
       end
 
       def inline_diffs
-        @inline_diffs ||= InlineDiff.new(@raw_lines).inline_diffs
+        @inline_diffs ||= InlineDiff.for_lines(@raw_lines)
       end
 
       def old_lines
@@ -72,11 +72,6 @@ module Gitlab
 
         [ref.project.repository, ref.id, path]
       end
-
-      def html_escape(str)
-        replacements = { '&' => '&amp;', '>' => '&gt;', '<' => '&lt;', '"' => '&quot;', "'" => '&#39;' }
-        str.gsub(/[&"'><]/, replacements)
-      end
     end
   end
 end

lib/gitlab/diff/inline_diff.rb

 module Gitlab
   module Diff
     class InlineDiff
-      attr_accessor :lines
+      attr_accessor :old_line, :new_line, :offset
 
-      def initialize(lines)
-        @lines = lines
-      end
+      def self.for_lines(lines)
+        local_edit_indexes = self.find_local_edits(lines)
 
-      def inline_diffs
         inline_diffs = []
 
         local_edit_indexes.each do |index|
           old_index = index
           new_index = index + 1
-          old_line = @lines[old_index]
-          new_line = @lines[new_index]
+          old_line = lines[old_index]
+          new_line = lines[new_index]
+
+          old_diffs, new_diffs = new(old_line, new_line, offset: 1).inline_diffs
+
+          inline_diffs[old_index] = old_diffs
+          inline_diffs[new_index] = new_diffs
+        end
+
+        inline_diffs
+      end
+
+      def initialize(old_line, new_line, offset: 0)
+        @old_line = old_line[offset..-1]
+        @new_line = new_line[offset..-1]
+        @offset = offset
+      end
 
+      def inline_diffs
         # Skip inline diff if empty line was replaced with content
-          next if old_line[1..-1] == ""
+        return if old_line == ""
 
-          # Add one, because this is based on the prefixless version
-          lcp = longest_common_prefix(old_line[1..-1], new_line[1..-1]) + 1
+        lcp = longest_common_prefix(old_line, new_line)
         lcs = longest_common_suffix(old_line[lcp..-1], new_line[lcp..-1])
 
-          old_diff_range = lcp..(old_line.length - lcs - 1)
-          new_diff_range = lcp..(new_line.length - lcs - 1)
+        lcp += offset
+        old_length = old_line.length + offset
+        new_length = new_line.length + offset
 
-          inline_diffs[old_index] = [old_diff_range] if old_diff_range.begin <= old_diff_range.end
-          inline_diffs[new_index] = [new_diff_range] if new_diff_range.begin <= new_diff_range.end
-        end
+        old_diff_range = lcp..(old_length - lcs - 1)
+        new_diff_range = lcp..(new_length - lcs - 1)
 
-        inline_diffs
+        old_diffs = [old_diff_range] if old_diff_range.begin <= old_diff_range.end
+        new_diffs = [new_diff_range] if new_diff_range.begin <= new_diff_range.end
+
+        [old_diffs, new_diffs]
       end
 
       private
 
-      # Find runs of single line edits
-      def local_edit_indexes
-        line_prefixes = @lines.map { |line| line.match(/\A([+-])/) ? $1 : ' ' }
+      def self.find_local_edits(lines)
+        line_prefixes = lines.map { |line| line.match(/\A([+-])/) ? $1 : ' ' }
         joined_line_prefixes = " #{line_prefixes.join} "
 
         offset = 0

lib/gitlab/diff/inline_diff_marker.rb

@@ -5,10 +5,12 @@ module Gitlab
 
       def initialize(raw_line, rich_line = raw_line)
         @raw_line = raw_line
-        @rich_line = rich_line
+        @rich_line = ERB::Util.html_escape(rich_line)
       end
 
       def mark(line_inline_diffs)
+        return rich_line unless line_inline_diffs
+
         marker_ranges = []
         line_inline_diffs.each do |inline_diff_range|
           # Map the inline-diff range based on the raw line to character positions in the rich line
@@ -19,11 +21,15 @@ module Gitlab
 
         offset = 0
         # Mark each range
-        marker_ranges.each do |range|
-          offset = insert_around_range(rich_line, range, "<span class='idiff'>", "</span>", offset)
+        marker_ranges.each_with_index do |range, i|
+          class_names = ["idiff"]
+          class_names << "left"   if i == 0
+          class_names << "right"  if i == marker_ranges.length - 1
+
+          offset = insert_around_range(rich_line, range, "<span class='#{class_names.join(" ")}'>", "</span>", offset)
         end
 
-        rich_line
+        rich_line.html_safe
       end
 
       private

spec/fixtures/logo_sample.svg

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg width="210px" height="210px" viewBox="0 0 210 210" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns">
+    <!-- Generator: Sketch 3.3.2 (12043) - http://www.bohemiancoding.com/sketch -->
+    <title>Slice 1</title>
+    <desc>Created with Sketch.</desc>
+    <script>alert('FAIL')</script>
+    <defs></defs>
+    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
+        <g id="logo" sketch:type="MSLayerGroup" transform="translate(0.000000, 10.000000)">
+            <g id="Page-1" sketch:type="MSShapeGroup">
+                <g id="Fill-1-+-Group-24">
+                    <g id="Group-24">
+                        <g id="Group">
+                            <path d="M105.0614,193.655 L105.0614,193.655 L143.7014,74.734 L66.4214,74.734 L105.0614,193.655 L105.0614,193.655 Z" id="Fill-4" fill="#E24329" class="tanuki-shape"></path>
+                            <path d="M105.0614,193.6548 L66.4214,74.7338 L12.2684,74.7338 L105.0614,193.6548 L105.0614,193.6548 Z" id="Fill-8" fill="#FC6D26" class="tanuki-shape"></path>
+                            <path d="M12.2685,74.7341 L12.2685,74.7341 L0.5265,110.8731 C-0.5445,114.1691 0.6285,117.7801 3.4325,119.8171 L105.0615,193.6551 L12.2685,74.7341 L12.2685,74.7341 Z" id="Fill-12" fill="#FCA326" class="tanuki-shape"></path>
+                            <path d="M12.2685,74.7342 L66.4215,74.7342 L43.1485,3.1092 C41.9515,-0.5768 36.7375,-0.5758 35.5405,3.1092 L12.2685,74.7342 L12.2685,74.7342 Z" id="Fill-16" fill="#E24329" class="tanuki-shape"></path>
+                            <path d="M105.0614,193.6548 L143.7014,74.7338 L197.8544,74.7338 L105.0614,193.6548 L105.0614,193.6548 Z" id="Fill-18" fill="#FC6D26" class="tanuki-shape"></path>
+                            <path d="M197.8544,74.7341 L197.8544,74.7341 L209.5964,110.8731 C210.6674,114.1691 209.4944,117.7801 206.6904,119.8171 L105.0614,193.6551 L197.8544,74.7341 L197.8544,74.7341 Z" id="Fill-20" fill="#FCA326" class="tanuki-shape"></path>
+                            <path d="M197.8544,74.7342 L143.7014,74.7342 L166.9744,3.1092 C168.1714,-0.5768 173.3854,-0.5758 174.5824,3.1092 L197.8544,74.7342 L197.8544,74.7342 Z" id="Fill-22" fill="#E24329" class="tanuki-shape"></path>
+                        </g>
+                    </g>
+                </g>
+            </g>
+        </g>
+    </g>
+</svg>

spec/fixtures/parallel_diff_result.yml

@@ -55,7 +55,7 @@
     :type: new
     :number: 9
     :text: |
-      +<span id="LC9" class="line">      <span class="k">raise</span> <span class="no"><span class='idiff'>RuntimeError</span></span><span class="p"><span class='idiff'>,</span></span><span class='idiff'> </span><span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>
+      +<span id="LC9" class="line">      <span class="k">raise</span> <span class="no"><span class='idiff left'>RuntimeError</span></span><span class="p"><span class='idiff'>,</span></span><span class='idiff right'> </span><span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>
     :line_code: 2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_9
 - :left:
     :type:

spec/helpers/diff_helper_spec.rb

@@ -104,8 +104,7 @@ describe DiffHelper do
     end
   end
 
-  describe 'diff_line_content' do
-
+  describe '#diff_line_content' do
     it 'should return non breaking space when line is empty' do
       expect(diff_line_content(nil)).to eq('  ')
     end
@@ -116,9 +115,19 @@ describe DiffHelper do
       expect(diff_line_content(diff_file.diff_lines.first.type)).to eq('match')
       expect(diff_file.diff_lines.first.new_pos).to eq(6)
     end
+  end
+
+  describe "#mark_inline_diffs" do
+    let(:old_line) { %{abc 'def'} }
+    let(:new_line) { %{abc "def"} }
+
+    it "returns strings with marked inline diffs" do
+      marked_old_line, marked_new_line = mark_inline_diffs(old_line, new_line)
 
-    it 'should return safe HTML' do
-      expect(diff_line_content(diff_file.diff_lines.first.text)).to be_html_safe
+      expect(marked_old_line).to eq("abc <span class='idiff left right'>&#39;def&#39;</span>")
+      expect(marked_old_line).to be_html_safe
+      expect(marked_new_line).to eq("abc <span class='idiff left right'>&quot;def&quot;</span>")
+      expect(marked_new_line).to be_html_safe
     end
   end
 end

spec/javascripts/behaviors/autosize_spec.js.coffee

+#= require behaviors/autosize
+
+describe 'Autosize behavior', ->
+  beforeEach ->
+    fixture.set('<textarea class="js-autosize" style="resize: vertical"></textarea>')
+
+  it 'does not overwrite the resize property', ->
+    load()
+    expect($('textarea')).toHaveCss(resize: 'vertical')
+
+  load = -> $(document).trigger('page:load')

spec/lib/banzai/filter/commit_reference_filter_spec.rb

@@ -21,7 +21,7 @@ describe Banzai::Filter::CommitReferenceFilter, lib: true do
     let(:reference) { commit.id }
 
     # Let's test a variety of commit SHA sizes just to be paranoid
-    [6, 8, 12, 18, 20, 32, 40].each do |size|
+    [7, 8, 12, 18, 20, 32, 40].each do |size|
       it "links to a valid reference of #{size} characters" do
         doc = reference_filter("See #{reference[0...size]}")
 
@@ -35,7 +35,7 @@ describe Banzai::Filter::CommitReferenceFilter, lib: true do
       doc = reference_filter("See #{commit.id}")
       expect(doc.text).to eq "See #{commit.short_id}"
 
-      doc = reference_filter("See #{commit.id[0...6]}")
+      doc = reference_filter("See #{commit.id[0...7]}")
       expect(doc.text).to eq "See #{commit.short_id}"
     end
 

spec/lib/gitlab/diff/highlight_spec.rb

@@ -9,33 +9,69 @@ describe Gitlab::Diff::Highlight, lib: true do
   let(:diff_file) { Gitlab::Diff::File.new(diff, [commit.parent, commit]) }
 
   describe '#highlight' do
-    let(:diff_lines) { Gitlab::Diff::Highlight.new(diff_file).highlight }
+    context "with a diff file" do
+      let(:subject) { Gitlab::Diff::Highlight.new(diff_file).highlight }
 
       it 'should return Gitlab::Diff::Line elements' do
-      expect(diff_lines.first).to be_an_instance_of(Gitlab::Diff::Line)
+        expect(subject.first).to be_an_instance_of(Gitlab::Diff::Line)
       end
 
       it 'should not modify "match" lines' do
-      expect(diff_lines[0].text).to eq('@@ -6,12 +6,18 @@ module Popen')
-      expect(diff_lines[22].text).to eq('@@ -19,6 +25,7 @@ module Popen')
+        expect(subject[0].text).to eq('@@ -6,12 +6,18 @@ module Popen')
+        expect(subject[22].text).to eq('@@ -19,6 +25,7 @@ module Popen')
       end
 
-    it 'should highlight unchanged lines' do
+      it 'highlights and marks unchanged lines' do
         code = %Q{ <span id="LC7" class="line">  <span class="k">def</span> <span class="nf">popen</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="kp">nil</span><span class="p">)</span></span>\n}
 
-      expect(diff_lines[2].text).to eq(code)
+        expect(subject[2].text).to eq(code)
       end
 
-    it 'should highlight removed lines' do
+      it 'highlights and marks removed lines' do
         code = %Q{-<span id="LC9" class="line">      <span class="k">raise</span> <span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>\n}
 
-      expect(diff_lines[4].text).to eq(code)
+        expect(subject[4].text).to eq(code)
       end
 
-    it 'should highlight added lines' do
-      code = %Q{+<span id="LC9" class="line">      <span class="k">raise</span> <span class="no"><span class='idiff'>RuntimeError</span></span><span class="p"><span class='idiff'>,</span></span><span class='idiff'> </span><span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>\n}
+      it 'highlights and marks added lines' do
+        code = %Q{+<span id="LC9" class="line">      <span class="k">raise</span> <span class="no"><span class='idiff left'>RuntimeError</span></span><span class="p"><span class='idiff'>,</span></span><span class='idiff right'> </span><span class="s2">&quot;System commands must be given as an array of strings&quot;</span></span>\n}
 
-      expect(diff_lines[5].text).to eq(code)
+        expect(subject[5].text).to eq(code)
+      end
+    end
+
+    context "with diff lines" do
+      let(:subject) { Gitlab::Diff::Highlight.new(diff_file.diff_lines).highlight }
+
+      it 'should return Gitlab::Diff::Line elements' do
+        expect(subject.first).to be_an_instance_of(Gitlab::Diff::Line)
+      end
+
+      it 'should not modify "match" lines' do
+        expect(subject[0].text).to eq('@@ -6,12 +6,18 @@ module Popen')
+        expect(subject[22].text).to eq('@@ -19,6 +25,7 @@ module Popen')
+      end
+
+      it 'marks unchanged lines' do
+        code = %Q{   def popen(cmd, path=nil)}
+
+        expect(subject[2].text).to eq(code)
+        expect(subject[2].text).not_to be_html_safe
+      end
+
+      it 'marks removed lines' do
+        code = %Q{-      raise "System commands must be given as an array of strings"}
+
+        expect(subject[4].text).to eq(code)
+        expect(subject[4].text).not_to be_html_safe
+      end
+
+      it 'marks added lines' do
+        code = %Q{+      raise <span class='idiff left right'>RuntimeError, </span>&quot;System commands must be given as an array of strings&quot;}
+
+        expect(subject[5].text).to eq(code)
+        expect(subject[5].text).to be_html_safe
+      end
     end
   end
 end

spec/lib/gitlab/diff/inline_diff_marker_spec.rb

@@ -2,14 +2,28 @@ require 'spec_helper'
 
 describe Gitlab::Diff::InlineDiffMarker, lib: true do
   describe '#inline_diffs' do
+
+    context "when the rich text is html safe" do
       let(:raw)  { "abc 'def'" }
-    let(:rich) { %{<span class="abc">abc</span><span class="space"> </span><span class="def">&#39;def&#39;</span>} }
+      let(:rich) { %{<span class="abc">abc</span><span class="space"> </span><span class="def">&#39;def&#39;</span>}.html_safe }
       let(:inline_diffs) { [2..5] }
-
       let(:subject) { Gitlab::Diff::InlineDiffMarker.new(raw, rich).mark(inline_diffs) }
 
       it 'marks the inline diffs' do
-      expect(subject).to eq(%{<span class="abc">ab<span class='idiff'>c</span></span><span class="space"><span class='idiff'> </span></span><span class="def"><span class='idiff'>&#39;d</span>ef&#39;</span>})
+        expect(subject).to eq(%{<span class="abc">ab<span class='idiff left'>c</span></span><span class="space"><span class='idiff'> </span></span><span class="def"><span class='idiff right'>&#39;d</span>ef&#39;</span>})
+        expect(subject).to be_html_safe
+      end
+    end
+
+    context "when the text text is not html safe" do
+      let(:raw)  { "abc 'def'" }
+      let(:inline_diffs) { [2..5] }
+      let(:subject) { Gitlab::Diff::InlineDiffMarker.new(raw).mark(inline_diffs) }
+
+      it 'marks the inline diffs' do
+        expect(subject).to eq(%{ab<span class='idiff left right'>c &#39;d</span>ef&#39;})
+        expect(subject).to be_html_safe
+      end
     end
   end
 end

spec/lib/gitlab/diff/inline_diff_spec.rb

 require 'spec_helper'
 
 describe Gitlab::Diff::InlineDiff, lib: true do
-  describe '#inline_diffs' do
+  describe '.for_lines' do
     let(:diff) do
       <<eos
  class Test
@@ -13,7 +13,7 @@ describe Gitlab::Diff::InlineDiff, lib: true do
 eos
     end
 
-    let(:subject) { Gitlab::Diff::InlineDiff.new(diff.lines).inline_diffs }
+    let(:subject) { described_class.for_lines(diff.lines) }
 
     it 'finds all inline diffs' do
       expect(subject[0]).to be_nil
@@ -24,4 +24,17 @@ eos
       expect(subject[5]).to be_nil
     end
   end
+
+  describe "#inline_diffs" do
+    let(:old_line) { "XXX def initialize(test = true)" }
+    let(:new_line) { "YYY def initialize(test = false)" }
+    let(:subject) { described_class.new(old_line, new_line, offset: 3).inline_diffs }
+
+    it "finds the inline diff" do
+      old_diffs, new_diffs = subject
+
+      expect(old_diffs).to eq([26..28])
+      expect(new_diffs).to eq([26..29])
+    end
+  end
 end

spec/models/hooks/system_hook_spec.rb

@@ -36,7 +36,7 @@ describe SystemHook, models: true do
     it "project_destroy hook" do
       user = create(:user)
       project = create(:empty_project, namespace: user.namespace)
-      Projects::DestroyService.new(project, user, {}).execute
+      Projects::DestroyService.new(project, user, {}).pending_delete!
       expect(WebMock).to have_requested(:post, @system_hook.url).with(
         body: /project_destroy/,
         headers: { 'Content-Type'=>'application/json', 'X-Gitlab-Event'=>'System Hook' }

spec/models/merge_request_spec.rb

@@ -137,9 +137,10 @@ describe MergeRequest, models: true do
   describe 'detection of issues to be closed' do
     let(:issue0) { create :issue, project: subject.project }
     let(:issue1) { create :issue, project: subject.project }
-    let(:commit0) { double('commit0', closes_issues: [issue0]) }
-    let(:commit1) { double('commit1', closes_issues: [issue0]) }
-    let(:commit2) { double('commit2', closes_issues: [issue1]) }
+
+    let(:commit0) { double('commit0', safe_message: "Fixes #{issue0.to_reference}") }
+    let(:commit1) { double('commit1', safe_message: "Fixes #{issue0.to_reference}") }
+    let(:commit2) { double('commit2', safe_message: "Fixes #{issue1.to_reference}") }
 
     before do
       allow(subject).to receive(:commits).and_return([commit0, commit1, commit2])
@@ -149,7 +150,9 @@ describe MergeRequest, models: true do
       allow(subject.project).to receive(:default_branch).
         and_return(subject.target_branch)
 
-      expect(subject.closes_issues).to eq([issue0, issue1].sort_by(&:id))
+      closed = subject.closes_issues
+
+      expect(closed).to include(issue0, issue1)
     end
 
     it 'only lists issues as to be closed if it targets the default branch' do
@@ -167,17 +170,6 @@ describe MergeRequest, models: true do
 
       expect(subject.closes_issues).to include(issue2)
     end
-
-    context 'for a project with JIRA integration' do
-      let(:issue0) { JiraIssue.new('JIRA-123', subject.project) }
-      let(:issue1) { JiraIssue.new('FOOBAR-4567', subject.project) }
-
-      it 'returns sorted JiraIssues' do
-        allow(subject.project).to receive_messages(default_branch: subject.target_branch)
-
-        expect(subject.closes_issues).to eq([issue0, issue1])
-      end
-    end
   end
 
   describe "#work_in_progress?" do

spec/routing/project_routing_spec.rb

@@ -321,12 +321,12 @@ describe Projects::HooksController, 'routing' do
   end
 end
 
-# project_commit GET    /:project_id/commit/:id(.:format) commit#show {id: /[[:alnum:]]{6,40}/, project_id: /[^\/]+/}
+# project_commit GET    /:project_id/commit/:id(.:format) commit#show {id: /\h{7,40}/, project_id: /[^\/]+/}
 describe Projects::CommitController, 'routing' do
   it 'to #show' do
-    expect(get('/gitlab/gitlabhq/commit/4246fb')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fb')
-    expect(get('/gitlab/gitlabhq/commit/4246fb.diff')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fb', format: 'diff')
-    expect(get('/gitlab/gitlabhq/commit/4246fb.patch')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fb', format: 'patch')
+    expect(get('/gitlab/gitlabhq/commit/4246fbd')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fbd')
+    expect(get('/gitlab/gitlabhq/commit/4246fbd.diff')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fbd', format: 'diff')
+    expect(get('/gitlab/gitlabhq/commit/4246fbd.patch')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fbd', format: 'patch')
     expect(get('/gitlab/gitlabhq/commit/4246fbd13872934f72a8fd0d6fb1317b47b59cb5')).to route_to('projects/commit#show', namespace_id: 'gitlab', project_id: 'gitlabhq', id: '4246fbd13872934f72a8fd0d6fb1317b47b59cb5')
   end
 end

spec/support/filter_spec_helper.rb

@@ -67,9 +67,9 @@ module FilterSpecHelper
     if reference =~ /\A(.+)?.\d+\z/
       # Integer-based reference with optional project prefix
       reference.gsub(/\d+\z/) { |i| i.to_i + 1 }
-    elsif reference =~ /\A(.+@)?(\h{6,40}\z)/
+    elsif reference =~ /\A(.+@)?(\h{7,40}\z)/
       # SHA-based reference with optional prefix
-      reference.gsub(/\h{6,40}\z/) { |v| v.reverse }
+      reference.gsub(/\h{7,40}\z/) { |v| v.reverse }
     else
       reference.gsub(/\w+\z/) { |v| v.reverse }
     end

vendor/assets/javascripts/jquery.ba-resize.js

+/*!
+ * jQuery resize event - v1.1 - 3/14/2010
+ * http://benalman.com/projects/jquery-resize-plugin/
+ * 
+ * Copyright (c) 2010 "Cowboy" Ben Alman
+ * Dual licensed under the MIT and GPL licenses.
+ * http://benalman.com/about/license/
+ */
+
+// Script: jQuery resize event
+//
+// *Version: 1.1, Last updated: 3/14/2010*
+// 
+// Project Home - http://benalman.com/projects/jquery-resize-plugin/
+// GitHub       - http://github.com/cowboy/jquery-resize/
+// Source       - http://github.com/cowboy/jquery-resize/raw/master/jquery.ba-resize.js
+// (Minified)   - http://github.com/cowboy/jquery-resize/raw/master/jquery.ba-resize.min.js (1.0kb)
+// 
+// About: License
+// 
+// Copyright (c) 2010 "Cowboy" Ben Alman,
+// Dual licensed under the MIT and GPL licenses.
+// http://benalman.com/about/license/
+// 
+// About: Examples
+// 
+// This working example, complete with fully commented code, illustrates a few
+// ways in which this plugin can be used.
+// 
+// resize event - http://benalman.com/code/projects/jquery-resize/examples/resize/
+// 
+// About: Support and Testing
+// 
+// Information about what version or versions of jQuery this plugin has been
+// tested with, what browsers it has been tested in, and where the unit tests
+// reside (so you can test it yourself).
+// 
+// jQuery Versions - 1.3.2, 1.4.1, 1.4.2
+// Browsers Tested - Internet Explorer 6-8, Firefox 2-3.6, Safari 3-4, Chrome, Opera 9.6-10.1.
+// Unit Tests      - http://benalman.com/code/projects/jquery-resize/unit/
+// 
+// About: Release History
+// 
+// 1.1 - (3/14/2010) Fixed a minor bug that was causing the event to trigger
+//       immediately after bind in some circumstances. Also changed $.fn.data
+//       to $.data to improve performance.
+// 1.0 - (2/10/2010) Initial release
+
+(function($,window,undefined){
+  '$:nomunge'; // Used by YUI compressor.
+  
+  // A jQuery object containing all non-window elements to which the resize
+  // event is bound.
+  var elems = $([]),
+    
+    // Extend $.resize if it already exists, otherwise create it.
+    jq_resize = $.resize = $.extend( $.resize, {} ),
+    
+    timeout_id,
+    
+    // Reused strings.
+    str_setTimeout = 'setTimeout',
+    str_resize = 'resize',
+    str_data = str_resize + '-special-event',
+    str_delay = 'delay',
+    str_throttle = 'throttleWindow';
+  
+  // Property: jQuery.resize.delay
+  // 
+  // The numeric interval (in milliseconds) at which the resize event polling
+  // loop executes. Defaults to 250.
+  
+  jq_resize[ str_delay ] = 250;
+  
+  // Property: jQuery.resize.throttleWindow
+  // 
+  // Throttle the native window object resize event to fire no more than once
+  // every <jQuery.resize.delay> milliseconds. Defaults to true.
+  // 
+  // Because the window object has its own resize event, it doesn't need to be
+  // provided by this plugin, and its execution can be left entirely up to the
+  // browser. However, since certain browsers fire the resize event continuously
+  // while others do not, enabling this will throttle the window resize event,
+  // making event behavior consistent across all elements in all browsers.
+  // 
+  // While setting this property to false will disable window object resize
+  // event throttling, please note that this property must be changed before any
+  // window object resize event callbacks are bound.
+  
+  jq_resize[ str_throttle ] = true;
+  
+  // Event: resize event
+  // 
+  // Fired when an element's width or height changes. Because browsers only
+  // provide this event for the window element, for other elements a polling
+  // loop is initialized, running every <jQuery.resize.delay> milliseconds
+  // to see if elements' dimensions have changed. You may bind with either
+  // .resize( fn ) or .bind( "resize", fn ), and unbind with .unbind( "resize" ).
+  // 
+  // Usage:
+  // 
+  // > jQuery('selector').bind( 'resize', function(e) {
+  // >   // element's width or height has changed!
+  // >   ...
+  // > });
+  // 
+  // Additional Notes:
+  // 
+  // * The polling loop is not created until at least one callback is actually
+  //   bound to the 'resize' event, and this single polling loop is shared
+  //   across all elements.
+  // 
+  // Double firing issue in jQuery 1.3.2:
+  // 
+  // While this plugin works in jQuery 1.3.2, if an element's event callbacks
+  // are manually triggered via .trigger( 'resize' ) or .resize() those
+  // callbacks may double-fire, due to limitations in the jQuery 1.3.2 special
+  // events system. This is not an issue when using jQuery 1.4+.
+  // 
+  // > // While this works in jQuery 1.4+
+  // > $(elem).css({ width: new_w, height: new_h }).resize();
+  // > 
+  // > // In jQuery 1.3.2, you need to do this:
+  // > var elem = $(elem);
+  // > elem.css({ width: new_w, height: new_h });
+  // > elem.data( 'resize-special-event', { width: elem.width(), height: elem.height() } );
+  // > elem.resize();
+      
+  $.event.special[ str_resize ] = {
+    
+    // Called only when the first 'resize' event callback is bound per element.
+    setup: function() {
+      // Since window has its own native 'resize' event, return false so that
+      // jQuery will bind the event using DOM methods. Since only 'window'
+      // objects have a .setTimeout method, this should be a sufficient test.
+      // Unless, of course, we're throttling the 'resize' event for window.
+      if ( !jq_resize[ str_throttle ] && this[ str_setTimeout ] ) { return false; }
+      
+      var elem = $(this);
+      
+      // Add this element to the list of internal elements to monitor.
+      elems = elems.add( elem );
+      
+      // Initialize data store on the element.
+      $.data( this, str_data, { w: elem.width(), h: elem.height() } );
+      
+      // If this is the first element added, start the polling loop.
+      if ( elems.length === 1 ) {
+        loopy();
+      }
+    },
+    
+    // Called only when the last 'resize' event callback is unbound per element.
+    teardown: function() {
+      // Since window has its own native 'resize' event, return false so that
+      // jQuery will unbind the event using DOM methods. Since only 'window'
+      // objects have a .setTimeout method, this should be a sufficient test.
+      // Unless, of course, we're throttling the 'resize' event for window.
+      if ( !jq_resize[ str_throttle ] && this[ str_setTimeout ] ) { return false; }
+      
+      var elem = $(this);
+      
+      // Remove this element from the list of internal elements to monitor.
+      elems = elems.not( elem );
+      
+      // Remove any data stored on the element.
+      elem.removeData( str_data );
+      
+      // If this is the last element removed, stop the polling loop.
+      if ( !elems.length ) {
+        clearTimeout( timeout_id );
+      }
+    },
+    
+    // Called every time a 'resize' event callback is bound per element (new in
+    // jQuery 1.4).
+    add: function( handleObj ) {
+      // Since window has its own native 'resize' event, return false so that
+      // jQuery doesn't modify the event object. Unless, of course, we're
+      // throttling the 'resize' event for window.
+      if ( !jq_resize[ str_throttle ] && this[ str_setTimeout ] ) { return false; }
+      
+      var old_handler;
+      
+      // The new_handler function is executed every time the event is triggered.
+      // This is used to update the internal element data store with the width
+      // and height when the event is triggered manually, to avoid double-firing
+      // of the event callback. See the "Double firing issue in jQuery 1.3.2"
+      // comments above for more information.
+      
+      function new_handler( e, w, h ) {
+        var elem = $(this),
+          data = $.data( this, str_data );
+        
+        // If called from the polling loop, w and h will be passed in as
+        // arguments. If called manually, via .trigger( 'resize' ) or .resize(),
+        // those values will need to be computed.
+        data.w = w !== undefined ? w : elem.width();
+        data.h = h !== undefined ? h : elem.height();
+        
+        old_handler.apply( this, arguments );
+      };
+      
+      // This may seem a little complicated, but it normalizes the special event
+      // .add method between jQuery 1.4/1.4.1 and 1.4.2+
+      if ( $.isFunction( handleObj ) ) {
+        // 1.4, 1.4.1
+        old_handler = handleObj;
+        return new_handler;
+      } else {
+        // 1.4.2+
+        old_handler = handleObj.handler;
+        handleObj.handler = new_handler;
+      }
+    }
+    
+  };
+  
+  function loopy() {
+    
+    // Start the polling loop, asynchronously.
+    timeout_id = window[ str_setTimeout ](function(){
+      
+      // Iterate over all elements to which the 'resize' event is bound.
+      elems.each(function(){
+        var elem = $(this),
+          width = elem.width(),
+          height = elem.height(),
+          data = $.data( this, str_data );
+        
+        // If element size has changed since the last time, update the element
+        // data store and trigger the 'resize' event.
+        if ( width !== data.w || height !== data.h ) {
+          elem.trigger( str_resize, [ data.w = width, data.h = height ] );
+        }
+        
+      });
+      
+      // Loop.
+      loopy();
+      
+    }, jq_resize[ str_delay ] );
+    
+  };
+  
+})(jQuery,this);