Merge branch 'master' into 8-3-stable

CHANGELOG

@@ -54,6 +54,7 @@ v 8.3.0 (unreleased)
   - Suppress warning about missing `.gitlab-ci.yml` if builds are disabled
   - Do not show build status unless builds are enabled and `.gitlab-ci.yml` is present
   - Persist runners registration token in database
+  - Fix online editor should not remove newlines at the end of the file
 
 v 8.2.3
   - Fix application settings cache not expiring after changes (Stan Hu)
@@ -61,8 +62,6 @@ v 8.2.3
   - Update documentation for "Guest" permissions
   - Properly convert Emoji-only comments into Award Emojis
   - Enable devise paranoid mode to prevent user enumeration attack
-
-v 8.2.3
   - Webhook payload has an added, modified and removed properties for each commit
   - Fix 500 error when creating a merge request that removes a submodule
 

CONTRIBUTING.md

 # Contribute to GitLab
 
-Thank you for your interest in contributing to GitLab.
-This guide details how contribute to GitLab in a way that is efficient for everyone.
-If you have read this guide and want to know how the GitLab core-team operates please see [the GitLab contributing process](PROCESS.md).
+Thank you for your interest in contributing to GitLab. This guide details how
+to contribute to GitLab in a way that is efficient for everyone.
+
+GitLab comes into two flavors, GitLab Community Edition (CE) our free and open
+source edition, and GitLab Enterprise Edition (EE) which is our commercial
+edition. Throughout this guide you will see references to CE and EE for
+abbreviation.
+
+If you have read this guide and want to know how the GitLab [core-team][]
+operates please see [the GitLab contributing process](PROCESS.md).
 
 ## Contributor license agreement
 
-By submitting code as an individual you agree to the [individual contributor license agreement](doc/legal/individual_contributor_license_agreement.md). By submitting code as an entity you agree to the [corporate contributor license agreement](doc/legal/corporate_contributor_license_agreement.md).
+By submitting code as an individual you agree to the
+[individual contributor license agreement](doc/legal/individual_contributor_license_agreement.md).
+By submitting code as an entity you agree to the
+[corporate contributor license agreement](doc/legal/corporate_contributor_license_agreement.md).
 
 ## Security vulnerability disclosure
 
-Please report suspected security vulnerabilities in private to support@gitlab.com, also see the [disclosure section on the GitLab.com website](https://about.gitlab.com/disclosure/). Please do NOT create publicly viewable issues for suspected security vulnerabilities.
+Please report suspected security vulnerabilities in private to
+`support@gitlab.com`, also see the
+[disclosure section on the GitLab.com website](https://about.gitlab.com/disclosure/).
+Please do **NOT** create publicly viewable issues for suspected security
+vulnerabilities.
 
 ## Closing policy for issues and merge requests
 
-GitLab is a popular open source project and the capacity to deal with issues and merge requests is limited. Out of respect for our volunteers, issues and merge requests not in line with the guidelines listed in this document may be closed without notice.
+GitLab is a popular open source project and the capacity to deal with issues
+and merge requests is limited. Out of respect for our volunteers, issues and
+merge requests not in line with the guidelines listed in this document may be
+closed without notice.
 
-Please treat our volunteers with courtesy and respect, it will go a long way towards getting your issue resolved.
+Please treat our volunteers with courtesy and respect, it will go a long way
+towards getting your issue resolved.
 
-Issues and merge requests should be in English and contain appropriate language for audiences of all ages.
+Issues and merge requests should be in English and contain appropriate language
+for audiences of all ages.
 
 ## Helping others
 
-Please help other GitLab users when you can.
-The channels people will reach out on can be found on the [getting help page](https://about.gitlab.com/getting-help/).
-Sign up for the mailing list, answer GitLab questions on StackOverflow or respond in the IRC channel.
-You can also sign up on [CodeTriage](http://www.codetriage.com/gitlabhq/gitlabhq) to help with one issue every day.
+Please help other GitLab users when you can. The channels people will reach out
+on can be found on the [getting help page][].
+
+Sign up for the mailing list, answer GitLab questions on StackOverflow or
+respond in the IRC channel. You can also sign up on [CodeTriage][] to help with
+the remaining issues on the GitHub issue tracker.
 
 ## I want to contribute!
 
 If you want to contribute to GitLab, but are not sure where to start,
-look for [issues](https://gitlab.com/gitlab-org/gitlab-ce/issues?milestone_id=&scope=all&sort=created_desc&state=opened&utf8=%E2%9C%93&assignee_id=&author_id=&milestone_title=&label_name=up-for-grabs)
-with the label `up-for-grabs`.
-These issues will be of reasonable size and challenge, for anyone to start
-contributing to GitLab.
+look for [issues with the label `up-for-grabs`][up-for-grabs]. These issues
+will be of reasonable size and challenge, for anyone to start contributing to
+GitLab.
 
-This was inspired by [an article by Kent C. Dodds](https://medium.com/@kentcdodds/first-timers-only-78281ea47455#.i2f363mx4).
+This was inspired by [an article by Kent C. Dodds][medium-up-for-grabs].
 
 ## Issue tracker
 
-To get support for your particular problem please use the [getting help channels](https://about.gitlab.com/getting-help/).
+To get support for your particular problem please use the
+[getting help channels](https://about.gitlab.com/getting-help/).
 
-The [GitLab CE issue tracker on GitLab.com](https://gitlab.com/gitlab-org/gitlab-ce/issues) is
-for bugs in the latest GitLab release and feature proposals.
+The [GitLab CE issue tracker on GitLab.com][ce-tracker] is for bugs concerning
+the latest GitLab release and [feature proposals](#feature-proposals).
 
-When submitting an issue please conform to the issue submission guidelines listed below.
-Not all issues will be addressed and your issue is more likely to be addressed
-if you submit a merge request which partially or fully addresses the issue.
+When submitting an issue please conform to the issue submission guidelines
+listed below. Not all issues will be addressed and your issue is more likely to
+be addressed if you submit a merge request which partially or fully solves
+the issue.
 
-If you're unsure where to post, post to the [mailing list](https://groups.google.com/forum/#!forum/gitlabhq)
-or [Stack Overflow](https://stackoverflow.com/questions/tagged/gitlab) first.
-There are a lot of helpful GitLab users there who may be able to help you quickly.
-If your particular issue turns out to be a bug, it will find its way from there.
+If you're unsure where to post, post to the [mailing list][google-group] or
+[Stack Overflow][stackoverflow] first. There are a lot of helpful GitLab users
+there who may be able to help you quickly. If your particular issue turns out
+to be a bug, it will find its way from there.
 
-Please send a merge request with a tested solution or a merge request with a failing test instead of opening an issue if you can.
+If it happens that you know the solution to an existing bug, please first
+open the issue in order to keep track of it and then open the relevant merge
+request that potentially fixes it.
 
 ### Feature proposals
 
 To create a feature proposal for CE and CI, open an issue on the
-[issue tracker of CE](https://gitlab.com/gitlab-org/gitlab-ce/issues).
+[issue tracker of CE][ce-tracker].
 
-For feature proposals for EE, open an issue on
-[the issue tracker of EE](https://gitlab.com/gitlab-org/gitlab-ce/issues).
+For feature proposals for EE, open an issue on the
+[issue tracker of EE][ee-tracker].
 
-Add the label `feature proposal` to the issue.
+In order to help track the feature proposals, we have created a
+[`feature proposal`][fpl] label. For the time being, users that are not members
+of the project cannot add labels. You can instead ask one of the [core team][]
+members to add the label `feature proposal` to the issue.
 
-Please keep feature proposals as small and simple as possible,
-complex proposals might be edited to make them small and simple.
+Please keep feature proposals as small and simple as possible, complex ones
+might be edited to make them small and simple.
 
 For changes in the interface, it can be helpful to create a mockup first.
 If you want to create something yourself, consider opening an issue first to
@@ -74,76 +101,143 @@ discuss whether it is interesting to include this in GitLab.
 
 ### Issue tracker guidelines
 
-**[Search the issues](https://gitlab.com/gitlab-org/gitlab-ce/issues)**
-for similar entries before submitting your own,
-there's a good chance somebody else had the same issue or feature proposal.
-Show your support with `:+1:` and/or join the discussion.
-
-Please submit bugs in the following format (as the first post):
-
-1. **Summary:** Summarize your issue in one sentence (what goes wrong, what did you expect to happen)
-1. **Steps to reproduce:** How can we reproduce the issue
-1. **Expected behavior:** Describe your issue in detail
-1. **Observed behavior**
-1. **Relevant logs and/or screenshots:** Please use code blocks (\`\`\`) to format console output, logs, and code as it's very hard to read otherwise.
-1. **Output of checks**
-    * Results of GitLab [Application Check](doc/install/installation.md#check-application-status) (For installations with omnibus-gitlab package: `sudo gitlab-rake gitlab:check SANITIZE=true`); For installations from source: `sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true`); we will only investigate if the tests are passing
-    * Version of GitLab you are running; we will only investigate issues in the latest stable and development releases as per the [maintenance policy](MAINTENANCE.md)
-    * Add the last commit SHA-1 of the GitLab version you used to replicate the issue (obtainable from the help page)
-    * Describe your setup (use relevant parts from the env info: For installations with omnibus-gitlab package: `sudo gitlab-rake gitlab:env:info`; For installations from source: `sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)
-1. **Possible fixes**: If you can, link to the line of code that might be responsible for the problem
+**[Search the issue tracker][ce-tracker]** for similar entries before
+submitting your own, there's a good chance somebody else had the same issue or
+feature proposal. Show your support with an award emoji and/or join the
+discussion.
+
+Please submit bugs using the following template in the issue description area.
+The text in the parenthesis is there to help you with what to include. Omit it
+when submitting the actual issue. You can copy-paste it and then edit as you
+see fit.
+
+```
+## Summary
+
+(Summarize your issue in one sentence - what goes wrong, what did you expect to happen)
+
+## Steps to reproduce
+
+(How one can reproduce the issue - this is very important)
+
+## Expected behavior
+
+(What you should see instead)
+
+## Relevant logs and/or screenshots
+
+(Paste any relevant logs - please use code blocks (```) to format console output,
+logs, and code as it's very hard to read otherwise.)
+
+## Output of checks
+
+### Results of GitLab Application Check
+
+(For installations with omnibus-gitlab package run and paste the output of:
+sudo gitlab-rake gitlab:check SANITIZE=true)
+
+(For installations from source run and paste the output of:
+sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
+
+(we will only investigate if the tests are passing)
+
+### Results of GitLab Environment Info
+
+(For installations with omnibus-gitlab package run and paste the output of:
+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)
+
+## Possible fixes
+
+(If you can, link to the line of code that might be responsible for the problem)
+
+```
 
 ## Merge requests
 
-We welcome merge requests with fixes and improvements to GitLab code, tests, and/or documentation. The features we would really like a merge request for are listed with the
-[label 'accepting merge requests' on our issue tracker for CE](https://gitlab.com/gitlab-org/gitlab-ce/issues?milestone_id=&scope=all&sort=created_desc&state=opened&utf8=%E2%9C%93&assignee_id=&author_id=&milestone_title=&label_name=Accepting+Merge+Requests)
-and [EE](https://gitlab.com/gitlab-org/gitlab-ee/issues?milestone_id=&scope=all&sort=created_desc&state=opened&utf8=%E2%9C%93&assignee_id=&author_id=&milestone_title=&label_name=Accepting+Merge+Requests)
-but other improvements are also welcome.
-If you want to add a new feature that is not labeled it is best to first create a feedback issue (if there isn't one already) and leave a comment asking for it to be marked accepting merge requests.
-Please include screenshots or wireframes if the feature will also change the UI.
+We welcome merge requests with fixes and improvements to GitLab code, tests,
+and/or documentation. The features we would really like a merge request for are
+listed with the label [`Accepting Merge Requests` on our issue tracker for CE][accepting-mrs-ce]
+and [EE][accepting-mrs-ee] but other improvements are also welcome.
 
-Merge requests can be filed either at [gitlab.com](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests) or [github.com](https://github.com/gitlabhq/gitlabhq/pulls).
+If you want to add a new feature that is not labeled it is best to first create
+a feedback issue (if there isn't one already) and leave a comment asking for it
+to be marked as `Accepting merge requests`. Please include screenshots or
+wireframes if the feature will also change the UI.
 
-If you are new to GitLab development (or web development in general), search for the label `easyfix` ([GitLab.com](https://gitlab.com/gitlab-org/gitlab-ce/issues?label_name=easyfix), [GitHub](https://github.com/gitlabhq/gitlabhq/labels/easyfix)). Those are issues easy to fix, marked by the GitLab core-team. If you are unsure how to proceed but want to help, mention one of the core-team members to give you a hint.
+Merge requests can be filed either at [GitLab.com][gitlab-mr-tracker] or at
+[github.com][github-mr-tracker].
 
-To start with GitLab download the [GitLab Development Kit](https://gitlab.com/gitlab-org/gitlab-development-kit) and see [Development section](doc/development/README.md) in the help file.
+If you are new to GitLab development (or web development in general), see the
+[I want to contribute!](#i-want-to-contribute) section to get you started with
+some potentially easy issues.
+
+To start with GitLab development download the [GitLab Development Kit][gdk] and
+see the [Development section](doc/development/README.md) for some guidelines.
 
 ### Merge request guidelines
 
-If you can, please submit a merge request with the fix or improvements including tests. If you don't know how to fix the issue but can write a test that exposes the issue we will accept that as well. In general bug fixes that include a regression test are merged quickly while new features without proper tests are least likely to receive timely feedback. The workflow to make a merge request is as follows:
+If you can, please submit a merge request with the fix or improvements
+including tests. If you don't know how to fix the issue but can write a test
+that exposes the issue we will accept that as well. In general bug fixes that
+include a regression test are merged quickly while new features without proper
+tests are least likely to receive timely feedback. The workflow to make a merge
+request is as follows:
 
 1. Fork the project into your personal space on GitLab.com
 1. Create a feature branch
 1. Write [tests](https://gitlab.com/gitlab-org/gitlab-development-kit#running-the-tests) and code
 1. Add your changes to the [CHANGELOG](CHANGELOG)
-1. If you are changing the README, some documentation or other things which have no effect on the tests, add `[ci skip]` somewhere in the commit message
-1. If you have multiple commits please combine them into one commit by [squashing them](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)
-1. Push the commit to your fork
+1. If you are changing the README, some documentation or other things which
+   have no effect on the tests, add `[ci skip]` somewhere in the commit message
+1. If you have multiple commits please combine them into one commit by
+   [squashing them][git-squash]
+1. Push the commit(s) to your fork
 1. Submit a merge request (MR) to the master branch
 1. The MR title should describe the change you want to make
-1. The MR description should give a motive for your change and the method you used to achieve it
+1. The MR description should give a motive for your change and the method you
+   used to achieve it
 1. If the MR changes the UI it should include before and after screenshots
-1. If the MR changes CSS classes please include the list of affected pages `grep css-class ./app -R`
-1. Link relevant [issues](https://gitlab.com/gitlab-org/gitlab-ce/issues)
-from the merge request description and leave a comment on them with a link back to the MR
-1. Be prepared to answer questions and incorporate feedback even if requests for this arrive weeks or months after your MR submission
-1. If your MR touches code that executes shell commands, make sure it adheres to the [shell command guidelines](    doc/development/shell_commands.md).
-1. Also have a look at the [shell command guidelines](doc/development/shell_commands.md) if your code reads or opens files, or handles paths to files on disk.
-1. If your code creates new files on disk please read the [shared files guidelines](doc/development/shared_files.md).
-
-The **official merge window** is in the beginning of the month from the 1st to the 7th day of the month. The best time to submit a MR and get feedback fast.
-Before this time the GitLab B.V. team is still dealing with work that is created by the monthly release such as regressions requiring patch releases.
-After the 7th it is already getting closer to the release date of the next version. This means there is less time to fix the issues created by merging large new features.
-
-Please keep the change in a single MR **as small as possible**. If you want to contribute a large feature think very hard what the minimum viable change is. Can you split functionality? Can you only submit the backend/API code? Can you start with a very simple UI? Can you do part of the refactor? The increased reviewability of small MR's that leads to higher code quality is more important to us than having a minimal commit log. The smaller a MR is the more likely it is it will be merged (quickly), after that you can send more MR's to enhance it.
-
-For examples of feedback on merge requests please look at already [closed merge requests](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests?assignee_id=&label_name=&milestone_id=&scope=&sort=&state=closed). If you would like quick feedback on your merge request feel free to mention one of the Merge Marshalls of [the core-team](https://about.gitlab.com/core-team/). Please ensure that your merge request meets the contribution acceptance criteria.
+1. If the MR changes CSS classes please include the list of affected pages
+   `grep css-class ./app -R`
+1. Link any relevant [issues][ce-tracker] in the merge request description and
+   leave a comment on them with a link back to the MR
+1. Be prepared to answer questions and incorporate feedback even if requests
+   for this arrive weeks or months after your MR submission
+1. If your MR touches code that executes shell commands, reads or opens files or
+   handles paths to files on disk, make sure it adheres to the
+   [shell command guidelines](doc/development/shell_commands.md)
+1. If your code creates new files on disk please read the
+   [shared files guidelines](doc/development/shared_files.md).
+
+The **official merge window** is in the beginning of the month from the 1st to
+the 7th day of the month. This is the best time to submit an MR and get
+feedback fast. Before this time the GitLab Inc. team is still dealing with work
+that is created by the monthly release such as regressions requiring patch
+releases. After the 7th it is already getting closer to the release date of the
+next version. This means there is less time to fix the issues created by
+merging large new features.
+
+Please keep the change in a single MR **as small as possible**. If you want to
+contribute a large feature think very hard what the minimum viable change is.
+Can you split the functionality? Can you only submit the backend/API code? Can
+you start with a very simple UI? Can you do part of the refactor? The increased
+reviewability of small MRs that leads to higher code quality is more important
+to us than having a minimal commit log. The smaller an MR is the more likely it
+is it will be merged (quickly). After that you can send more MRs to enhance it.
+
+For examples of feedback on merge requests please look at already
+[closed merge requests][]. If you would like quick feedback on your merge
+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.
 
 ## Definition of done
 
-If you contribute to GitLab please know that changes involve more than just code.
-We have the following [definition of done](http://guide.agilealliance.org/guide/definition-of-done.html).
-Please ensure you support the feature you contribute through all of these steps.
+If you contribute to GitLab please know that changes involve more than just
+code. We have the following [definition of done][]. Please ensure you support
+the feature you contribute through all of these steps.
 
 1. Description explaining the relevancy (see following item)
 1. Working and clean code that is commented where needed
@@ -157,14 +251,16 @@ Please ensure you support the feature you contribute through all of these steps.
 1. Community questions answered
 1. Answers to questions radiated (in docs/wiki/etc.)
 
-If you add a dependency in GitLab (such as an operating system package) please consider updating the following and note the applicability of each in your merge request:
+If you add a dependency in GitLab (such as an operating system package) please
+consider updating the following and note the applicability of each in your
+merge request:
 
 1. Note the addition in the release blog post (create one if it doesn't exist yet) https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/
 1. Upgrade guide, for example https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/update/7.5-to-7.6.md
 1. Upgrader https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/update/upgrader.md#2-run-gitlab-upgrade-tool
 1. Installation guide https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/install/installation.md#1-packages-dependencies
 1. GitLab Development Kit https://gitlab.com/gitlab-org/gitlab-development-kit
-1. Test suite https://gitlab.com/gitlab-org/gitlab-ci/blob/master/doc/examples/configure_a_runner_to_run_the_gitlab_ce_test_suite.md
+1. Test suite https://gitlab.com/gitlab-org/gitlab-ce/blob/master/scripts/prepare_build.sh
 1. Omnibus package creator https://gitlab.com/gitlab-org/omnibus-gitlab
 
 ## Merge request description format
@@ -178,53 +274,105 @@ If you add a dependency in GitLab (such as an operating system package) please c
 ## Contribution acceptance criteria
 
 1. The change is as small as possible (see the above paragraph for details)
-1. Include proper tests and make all tests pass (unless it contains a test exposing a bug in existing code)
-1. All tests have to pass, if you suspect a failing CI build is unrelated to your contribution ask for tests to be restarted. See [the CI setup document](http://doc.gitlab.com/ce/development/ci_setup.html) on who you can ask for test restart.
-1. Initially contains a single commit (please use `git rebase -i` to squash commits)
-1. Can merge without problems (if not please merge `master`, never rebase commits pushed to the remote server)
+1. Include proper tests and make all tests pass (unless it contains a test
+   exposing a bug in existing code)
+1. If you suspect a failing CI build is unrelated to your contribution, you may
+   try and restart the failing CI job or ask a developer to fix the
+   aforementioned failing test
+1. Your MR initially contains a single commit (please use `git rebase -i` to
+   squash commits)
+1. Your changes can merge without problems (if not please merge `master`, never
+   rebase commits pushed to the remote server)
 1. Does not break any existing functionality
-1. Fixes one specific issue or implements one specific feature (do not combine things, send separate merge requests if needed)
-1. Migrations should do only one thing (eg: either create a table, move data to a new table or remove an old table) to aid retrying on failure
+1. Fixes one specific issue or implements one specific feature (do not combine
+   things, send separate merge requests if needed)
+1. Migrations should do only one thing (eg: either create a table, move data to
+   a new table or remove an old table) to aid retrying on failure
 1. Keeps the GitLab code base clean and well structured
 1. Contains functionality we think other users will benefit from too
 1. Doesn't add configuration options since they complicate future changes
-1. Changes after submitting the merge request should be in separate commits (no squashing). You will be asked to squash when the review is over, before merging.
-1. It conforms to the following style guides.
-    If your change touches a line that does not follow the style,
-    modify the entire line to follow it. This prevents linting tools from generating warnings.
-    Don't touch neighbouring lines. As an exception, automatic mass refactoring modifications
-    may leave style non-compliant.
+1. Changes after submitting the merge request should be in separate commits
+   (no squashing). If necessary, you will be asked to squash when the review is
+   over, before merging.
+1. It conforms to the following style guides:
+    * If your change touches a line that does not follow the style, modify the
+      entire line to follow it. This prevents linting tools from generating warnings.
+    * Don't touch neighbouring lines. As an exception, automatic mass
+      refactoring modifications may leave style non-compliant.
 
 ## Style guides
 
 1.  [Ruby](https://github.com/bbatsov/ruby-style-guide).
-    Important sections include [Source Code Layout](https://github.com/bbatsov/ruby-style-guide#source-code-layout)
-    and [Naming](https://github.com/bbatsov/ruby-style-guide#naming). Use:
+    Important sections include [Source Code Layout][rss-source] and
+    [Naming][rss-naming]. Use:
     - multi-line method chaining style **Option B**: dot `.` on previous line
     - string literal quoting style **Option A**: single quoted by default
 1.  [Rails](https://github.com/bbatsov/rails-style-guide)
-1.  [Testing](https://github.com/thoughtbot/guides/tree/master/style#testing)
-1.  [CoffeeScript](https://github.com/thoughtbot/guides/tree/master/style#coffeescript)
-1.  [Shell commands](doc/development/shell_commands.md) created by GitLab contributors to enhance security
+1.  [Testing](https://github.com/thoughtbot/guides/tree/master/style/testing)
+1.  [CoffeeScript](https://github.com/thoughtbot/guides/tree/master/style/coffeescript)
+1.  [Shell commands](doc/development/shell_commands.md) created by GitLab
+    contributors to enhance security
 1.  [Markdown](http://www.cirosantilli.com/markdown-styleguide)
 1.  [Database Migrations](doc/development/migration_style_guide.md)
 1.  [Documentation styleguide](doc_styleguide.md)
-1.  Interface text should be written subjectively instead of objectively. It should be the GitLab core team addressing a person. It should be written in present time and never use past tense (has been/was). For example instead of "prohibited this user from being saved due to the following errors:" the text should be "sorry, we could not create your account because:". Also these [excellent writing guidelines](https://github.com/NARKOZ/guides#writing).
+1.  Interface text should be written subjectively instead of objectively. It
+    should be the GitLab core team addressing a person. It should be written in
+    present time and never use past tense (has been/was). For example instead
+    of _prohibited this user from being saved due to the following errors:_ the
+    text should be _sorry, we could not create your account because:_
 
-This is also the style used by linting tools such as [RuboCop](https://github.com/bbatsov/rubocop), [PullReview](https://www.pullreview.com/) and [Hound CI](https://houndci.com).
+This is also the style used by linting tools such as
+[RuboCop](https://github.com/bbatsov/rubocop),
+[PullReview](https://www.pullreview.com/) and [Hound CI](https://houndci.com).
 
 ## Code of conduct
 
-As contributors and maintainers of this project, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities.
-
-We are committed to making participation in this project a harassment-free experience for everyone, regardless of level of experience, gender, gender identity and expression, sexual orientation, disability, personal appearance, body size, race, ethnicity, age, or religion.
-
-Examples of unacceptable behavior by participants include the use of sexual language or imagery, derogatory comments or personal attacks, trolling, public or private harassment, insults, or other unprofessional conduct.
-
-Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct. Project maintainers who do not follow the Code of Conduct may be removed from the project team.
-
-This code of conduct applies both within project spaces and in public spaces when an individual is representing the project or its community.
-
-Instances of abusive, harassing, or otherwise unacceptable behavior can be reported by emailing contact@gitlab.com
-
-This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.1.0, available at [http://contributor-covenant.org/version/1/1/0/](http://contributor-covenant.org/version/1/1/0/)
\ No newline at end of file
+As contributors and maintainers of this project, we pledge to respect all
+people who contribute through reporting issues, posting feature requests,
+updating documentation, submitting pull requests or patches, and other
+activities.
+
+We are committed to making participation in this project a harassment-free
+experience for everyone, regardless of level of experience, gender, gender
+identity and expression, sexual orientation, disability, personal appearance,
+body size, race, ethnicity, age, or religion.
+
+Examples of unacceptable behavior by participants include the use of sexual
+language or imagery, derogatory comments or personal attacks, trolling, public
+or private harassment, insults, or other unprofessional conduct.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct. Project maintainers who do not
+follow the Code of Conduct may be removed from the project team.
+
+This code of conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community.
+
+Instances of abusive, harassing, or otherwise unacceptable behavior can be
+reported by emailing `contact@gitlab.com`.
+
+This Code of Conduct is adapted from the [Contributor Covenant][], version 1.1.0,
+available at [http://contributor-covenant.org/version/1/1/0/](http://contributor-covenant.org/version/1/1/0/).
+
+[core team]: https://about.gitlab.com/core-team/
+[getting help page]: https://about.gitlab.com/getting-help/
+[Codetriage]: http://www.codetriage.com/gitlabhq/gitlabhq
+[up-for-grabs]: https://gitlab.com/gitlab-org/gitlab-ce/issues?label_name=up+for+grabs
+[medium-up-for-grabs]: https://medium.com/@kentcdodds/first-timers-only-78281ea47455
+[ce-tracker]: https://gitlab.com/gitlab-org/gitlab-ce/issues
+[ee-tracker]: https://gitlab.com/gitlab-org/gitlab-ee/issues
+[google-group]: https://groups.google.com/forum/#!forum/gitlabhq
+[stackoverflow]: https://stackoverflow.com/questions/tagged/gitlab
+[fpl]: https://gitlab.com/gitlab-org/gitlab-ce/issues?label_name=feature+proposal
+[accepting-mrs-ce]: https://gitlab.com/gitlab-org/gitlab-ce/issues?label_name=Accepting+Merge+Requests
+[accepting-mrs-ee]: https://gitlab.com/gitlab-org/gitlab-ee/issues?label_name=Accepting+Merge+Requests
+[gitlab-mr-tracker]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests
+[github-mr-tracker]: https://github.com/gitlabhq/gitlabhq/pulls
+[gdk]: https://gitlab.com/gitlab-org/gitlab-development-kit
+[git-squash]: https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits
+[closed merge requests]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests?assignee_id=&label_name=&milestone_id=&scope=&sort=&state=closed
+[definition of done]: http://guide.agilealliance.org/guide/definition-of-done.html
+[Contributor Covenant]: http://contributor-covenant.org
+[rss-source]: https://github.com/bbatsov/ruby-style-guide/blob/master/README.md#source-code-layout
+[rss-naming]: https://github.com/bbatsov/ruby-style-guide/blob/master/README.md#naming

app/assets/stylesheets/framework/panels.scss

@@ -3,7 +3,6 @@
 
   .panel-heading {
     padding: 7px $gl-padding;
-    line-height: 42px !important;
   }
 
   .panel-body {
@@ -15,3 +14,7 @@
     }
   }
 }
+
+.container-blank .panel .panel-heading {
+  line-height: 42px !important;  
+}

app/assets/stylesheets/framework/variables.scss

@@ -19,7 +19,7 @@ $border-color: #dce0e6;
 $table-border-color: #eef0f2;
 $background-color: #F7F8FA;
 $header-height: 58px;
-$fixed-layout-width: 1200px;
+$fixed-layout-width: 1280px;
 $gl-gray: #7f8fa4;
 $gl-padding: 16px;
 $gl-avatar-size: 46px;

app/controllers/projects/notes_controller.rb

@@ -13,7 +13,8 @@ class Projects::NotesController < Projects::ApplicationController
     @notes.each do |note|
       notes_json[:notes] << {
         id: note.id,
-        html: note_to_html(note)
+        html: note_to_html(note),
+        valid: note.valid?
       }
     end
 

app/helpers/gitlab_markdown_helper.rb

@@ -20,7 +20,7 @@ module GitlabMarkdownHelper
                    end
 
     user = current_user if defined?(current_user)
-    gfm_body = Gitlab::Markdown.render(escaped_body, project: @project, current_user: user, pipeline: :single_line)
+    gfm_body = Banzai.render(escaped_body, project: @project, current_user: user, pipeline: :single_line)
 
     fragment = Nokogiri::HTML::DocumentFragment.parse(gfm_body)
     if fragment.children.size == 1 && fragment.children[0].name == 'a'
@@ -50,7 +50,7 @@ module GitlabMarkdownHelper
 
     context[:project] ||= @project
 
-    html = Gitlab::Markdown.render(text, context)
+    html = Banzai.render(text, context)
 
     context.merge!(
       current_user:   (current_user if defined?(current_user)),
@@ -61,7 +61,7 @@ module GitlabMarkdownHelper
       ref:            @ref
     )
 
-    Gitlab::Markdown.post_process(html, context)
+    Banzai.post_process(html, context)
   end
 
   def asciidoc(text)

app/helpers/issues_helper.rb

@@ -121,6 +121,6 @@ module IssuesHelper
     end
   end
 
-  # Required for Gitlab::Markdown::IssueReferenceFilter
+  # Required for Banzai::Filter::IssueReferenceFilter
   module_function :url_for_issue
 end

app/helpers/labels_helper.rb

@@ -107,6 +107,6 @@ module LabelsHelper
     options_from_collection_for_select(grouped_labels, 'name', 'title', params[:label_name])
   end
 
-  # Required for Gitlab::Markdown::LabelReferenceFilter
+  # Required for Banzai::Filter::LabelReferenceFilter
   module_function :render_colored_label, :text_color_for_bg, :escape_once
 end

app/models/concerns/mentionable.rb

@@ -23,7 +23,7 @@ module Mentionable
 
   included do
     if self < Participable
-      participant ->(current_user) { mentioned_users(current_user, load_lazy_references: false) }
+      participant ->(current_user) { mentioned_users(current_user) }
     end
   end
 
@@ -43,8 +43,8 @@ module Mentionable
     self
   end
 
-  def all_references(current_user = self.author, text = nil, load_lazy_references: true)
-    ext = Gitlab::ReferenceExtractor.new(self.project, current_user, load_lazy_references: load_lazy_references)
+  def all_references(current_user = self.author, text = nil)
+    ext = Gitlab::ReferenceExtractor.new(self.project, current_user)
 
     if text
       ext.analyze(text)
@@ -59,13 +59,13 @@ module Mentionable
     ext
   end
 
-  def mentioned_users(current_user = nil, load_lazy_references: true)
-    all_references(current_user, load_lazy_references: load_lazy_references).users
+  def mentioned_users(current_user = nil)
+    all_references(current_user).users
   end
 
   # Extract GFM references to other Mentionables from this Mentionable. Always excludes its #local_reference.
-  def referenced_mentionables(current_user = self.author, text = nil, load_lazy_references: true)
-    refs = all_references(current_user, text, load_lazy_references: load_lazy_references)
+  def referenced_mentionables(current_user = self.author, text = nil)
+    refs = all_references(current_user, text)
     refs = (refs.issues + refs.merge_requests + refs.commits)
 
     # We're using this method instead of Array diffing because that requires

app/models/concerns/participable.rb

@@ -38,7 +38,9 @@ module Participable
   # Be aware that this method makes a lot of sql queries.
   # Save result into variable if you are going to reuse it inside same request
   def participants(current_user = self.author, load_lazy_references: true)
-    participants = self.class.participant_attrs.flat_map do |attr|
+    participants =
+      Gitlab::ReferenceExtractor.lazily do
+        self.class.participant_attrs.flat_map do |attr|
           value =
             if attr.respond_to?(:call)
               instance_exec(current_user, &attr)
@@ -48,10 +50,9 @@ module Participable
 
           participants_for(value, current_user)
         end.compact.uniq
+      end
 
-    if load_lazy_references
-      participants = Gitlab::Markdown::ReferenceFilter::LazyReference.load(participants).uniq
-
+    unless Gitlab::ReferenceExtractor.lazy?
       participants.select! do |user|
         user.can?(:read_project, project)
       end
@@ -64,12 +65,12 @@ module Participable
 
   def participants_for(value, current_user = nil)
     case value
-    when User, Gitlab::Markdown::ReferenceFilter::LazyReference
+    when User, Banzai::LazyReference
       [value]
     when Enumerable, ActiveRecord::Relation
       value.flat_map { |v| participants_for(v, current_user) }
     when Participable
-      value.participants(current_user, load_lazy_references: false)
+      value.participants(current_user)
     end
   end
 end

app/models/issue.rb

@@ -84,11 +84,11 @@ class Issue < ActiveRecord::Base
   end
 
   def referenced_merge_requests
-    references = [self, *notes].flat_map do |note|
+    Gitlab::ReferenceExtractor.lazily do
+      [self, *notes].flat_map do |note|
         note.all_references(load_lazy_references: false).merge_requests
-    end.uniq
-
-    Gitlab::Markdown::ReferenceFilter::LazyReference.load(references).uniq.sort_by(&:iid)
+      end
+    end.sort_by(&:iid)
   end
 
   # Reset issue events cache

app/models/note.rb

@@ -373,11 +373,11 @@ class Note < ActiveRecord::Base
   end
 
   def contains_emoji_only?
-    note =~ /\A#{Gitlab::Markdown::EmojiFilter.emoji_pattern}\s?\Z/
+    note =~ /\A#{Banzai::Filter::EmojiFilter.emoji_pattern}\s?\Z/
   end
 
   def award_emoji_name
-    original_name = note.match(Gitlab::Markdown::EmojiFilter.emoji_pattern)[1]
+    original_name = note.match(Banzai::Filter::EmojiFilter.emoji_pattern)[1]
     AwardEmoji.normilize_emoji_name(original_name)
   end
 end

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

@@ -16,8 +16,7 @@
       = select_tag :encoding, options_for_select([ "base64", "text" ], "text"), class: 'select2'
 
   .file-content.code
-    %pre.js-edit-mode-pane#editor
-      = params[:content] || local_assigns[:blob_data]
+    %pre.js-edit-mode-pane#editor #{params[:content] || local_assigns[:blob_data]}
     - if local_assigns[:path]
       .js-edit-mode-pane#preview.hide
         .center

app/views/projects/notes/_notes_with_form.html.haml

@@ -7,4 +7,4 @@
   = render "projects/notes/form", view: diff_view
 
 :javascript
-  new Notes("#{namespace_project_notes_path(namespace_id: @project.namespace, target_id: @noteable.id, target_type: @noteable.class.name.underscore)}", #{@notes.map(&:id).to_json}, #{Time.now.to_i}, "#{diff_view}")
+  var notes = new Notes("#{namespace_project_notes_path(namespace_id: @project.namespace, target_id: @noteable.id, target_type: @noteable.class.name.underscore)}", #{@notes.map(&:id).to_json}, #{Time.now.to_i}, "#{diff_view}")

doc/raketasks/README.md

 # Rake tasks
 
 - [Backup restore](backup_restore.md)
+- [Check](check.md)
 - [Cleanup](cleanup.md)
 - [Features](features.md)
 - [Maintenance](maintenance.md) and self-checks

doc/raketasks/check.md

+# Check Rake Tasks
+
+## Repository Integrity
+
+Even though Git is very resilient and tries to prevent data integrity issues,
+there are times when things go wrong. The following Rake tasks intend to
+help GitLab administrators diagnose problem repositories so they can be fixed.
+
+There are 3 things that are checked to determine integrity.
+
+1. Git repository file system check ([git fsck](https://git-scm.com/docs/git-fsck)).
+   This step verifies the connectivity and validity of objects in the repository.
+1. Check for `config.lock` in the repository directory.
+1. Check for any branch/references lock files in `refs/heads`.
+
+It's important to note that the existence of `config.lock` or reference locks
+alone do not necessarily indicate a problem. Lock files are routinely created
+and removed as Git and GitLab perform operations on the repository. They serve
+to prevent data integrity issues. However, if a Git operation is interrupted these
+locks may not be cleaned up properly.
+
+The following symptoms may indicate a problem with repository integrity. If users
+experience these symptoms you may use the rake tasks described below to determine
+exactly which repositories are causing the trouble.
+
+- Receiving an error when trying to push code - `remote: error: cannot lock ref`
+- A 500 error when viewing the GitLab dashboard or when accessing a specific project.
+
+### Check all GitLab repositories
+
+This task loops through all repositories on the GitLab server and runs the
+3 integrity checks described previously.
+
+```
+# omnibus-gitlab
+sudo gitlab-rake gitlab:repo:check
+
+# installation from source
+bundle exec rake gitlab:repo:check RAILS_ENV=production
+```
+
+### Check repositories for a specific user
+
+This task checks all repositories that a specific user has access to. This is important
+because sometimes you know which user is experiencing trouble but you don't know
+which project might be the cause.
+
+If the rake task is executed without brackets at the end, you will be prompted
+to enter a username.
+
+```bash
+# omnibus-gitlab
+sudo gitlab-rake gitlab:user:check_repos
+sudo gitlab-rake gitlab:user:check_repos[<username>]
+
+# installation from source
+bundle exec rake gitlab:user:check_repos RAILS_ENV=production
+bundle exec rake gitlab:user:check_repos[<username>] RAILS_ENV=production
+```
+
+Example output:
+
+![gitlab:user:check_repos output](check_repos_output.png)

features/project/issues/issues.feature

@@ -197,3 +197,9 @@ Feature: Project Issues
     And I should not see labels field
     And I submit new issue "500 error on profile"
     Then I should see issue "500 error on profile"
+
+  @javascript
+  Scenario: Another user adds a comment to issue I'm currently viewing
+    Given I visit issue page "Release 0.4"
+    And another user adds a comment with text "Yay!" to issue "Release 0.4"
+    Then I should see a new comment with text "Yay!"

features/project/source/browse_files.feature

@@ -34,6 +34,17 @@ Feature: Project Source Browse Files
     Then I am redirected to the new file
     And I should see its new content
 
+  @javascript
+  Scenario: I can create and commit file with new lines at the end of file
+    Given I click on "New file" link in repo
+    And I edit code with new lines at end of file
+    And I fill the new file name
+    And I fill the commit message
+    And I click on "Commit Changes"
+    Then I am redirected to the new file
+    And I click button "Edit"
+    And I should see its content with new lines preserved at end of file
+
   @javascript
   Scenario: I can upload file and commit
     Given I click on "Upload file" link in repo

features/steps/project/issues/issues.rb

@@ -284,6 +284,16 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
     end
   end
 
+  step 'another user adds a comment with text "Yay!" to issue "Release 0.4"' do
+    issue = Issue.find_by!(title: 'Release 0.4')
+    create(:note_on_issue, noteable: issue,  note: 'Yay!')
+  end
+
+  step 'I should see a new comment with text "Yay!"' do
+    page.within '#notes' do
+      expect(page).to have_content('Yay!')
+    end
+  end
   def filter_issue(text)
     fill_in 'issue_search', with: text
   end

features/steps/project/source/browse_files.rb

@@ -37,6 +37,10 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
     expect(page).to have_content new_gitignore_content
   end
 
+  step 'I should see its content with new lines preserved at end of file' do
+    expect(evaluate_script('blob.editor.getValue()')).to eq "Sample\n\n\n"
+  end
+
   step 'I click link "Raw"' do
     click_link 'Raw'
   end
@@ -62,6 +66,10 @@ class Spinach::Features::ProjectSourceBrowseFiles < Spinach::FeatureSteps
     set_new_content
   end
 
+  step 'I edit code with new lines at end of file' do
+    execute_script('blob.editor.setValue("Sample\n\n\n")')
+  end
+
   step 'I fill the new file name' do
     fill_in :file_name, with: new_file_name
   end

features/support/capybara.rb

@@ -2,7 +2,7 @@ require 'spinach/capybara'
 require 'capybara/poltergeist'
 
 # Give CI some extra time
-timeout = (ENV['CI'] || ENV['CI_SERVER']) ? 90 : 10
+timeout = (ENV['CI'] || ENV['CI_SERVER']) ? 90 : 15
 
 Capybara.javascript_driver = :poltergeist
 Capybara.register_driver :poltergeist do |app|

lib/banzai.rb

+module Banzai
+  def self.render(text, context = {})
+    Renderer.render(text, context)
+  end
+
+  def self.render_result(text, context = {})
+    Renderer.render_result(text, context)
+  end
+
+  def self.post_process(html, context)
+    Renderer.post_process(html, context)
+  end
+end

lib/banzai/cross_project_reference.rb

+require 'banzai'
+
+module Banzai
+  # Common methods for ReferenceFilters that support an optional cross-project
+  # reference.
+  module CrossProjectReference
+    # Given a cross-project reference string, get the Project record
+    #
+    # Defaults to value of `context[:project]` if:
+    # * No reference is given OR
+    # * Reference given doesn't exist
+    #
+    # ref - String reference.
+    #
+    # Returns a Project, or nil if the reference can't be found
+    def project_from_ref(ref)
+      return context[:project] unless ref
+
+      Project.find_with_namespace(ref)
+    end
+  end
+end

lib/banzai/filter.rb

+require 'active_support/core_ext/string/output_safety'
+require 'banzai'
+
+module Banzai
+  module Filter
+    def self.[](name)
+      const_get("#{name.to_s.camelize}Filter")
+    end
+  end
+end

lib/gitlab/markdown/abstract_reference_filter.rb → lib/banzai/filter/abstract_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # Issues, Merge Requests, Snippets, Commits and Commit Ranges share
     # similar functionality in reference filtering.
     class AbstractReferenceFilter < ReferenceFilter

lib/gitlab/markdown/filter/autolink_filter.rb → lib/banzai/filter/autolink_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 require 'uri'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML Filter for auto-linking URLs in HTML.
     #
     # Based on HTML::Pipeline::AutolinkFilter

lib/gitlab/markdown/filter/commit_range_reference_filter.rb → lib/banzai/filter/commit_range_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces commit range references with links.
     #
     # This filter supports cross-project references.

lib/gitlab/markdown/filter/commit_reference_filter.rb → lib/banzai/filter/commit_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces commit references with links.
     #
     # This filter supports cross-project references.

lib/gitlab/markdown/filter/emoji_filter.rb → lib/banzai/filter/emoji_filter.rb

 require 'action_controller'
-require 'gitlab/markdown'
+require 'banzai'
 require 'gitlab_emoji'
 require 'html/pipeline/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces :emoji: with images.
     #
     # Based on HTML::Pipeline::EmojiFilter

lib/gitlab/markdown/filter/external_issue_reference_filter.rb → lib/banzai/filter/external_issue_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces external issue tracker references with links.
     # References are ignored if the project doesn't use an external issue
     # tracker.

lib/gitlab/markdown/filter/external_link_filter.rb → lib/banzai/filter/external_link_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML Filter to add a `rel="nofollow"` attribute to external links
     #
     class ExternalLinkFilter < HTML::Pipeline::Filter

lib/gitlab/markdown/filter/issue_reference_filter.rb → lib/banzai/filter/issue_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces issue references with links. References to
     # issues that do not exist are ignored.
     #

lib/gitlab/markdown/filter/label_reference_filter.rb → lib/banzai/filter/label_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces label references with links.
     class LabelReferenceFilter < ReferenceFilter
       # Public: Find label references in text

lib/gitlab/markdown/filter/markdown_filter.rb → lib/banzai/filter/markdown_filter.rb

-module Gitlab
-  module Markdown
+require 'banzai'
+require 'html/pipeline/filter'
+
+module Banzai
+  module Filter
     class MarkdownFilter < HTML::Pipeline::TextFilter
       def initialize(text, context = nil, result = nil)
         super text, context, result

lib/gitlab/markdown/filter/merge_request_reference_filter.rb → lib/banzai/filter/merge_request_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces merge request references with links. References
     # to merge requests that do not exist are ignored.
     #

lib/gitlab/markdown/filter/redactor_filter.rb → lib/banzai/filter/redactor_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that removes references to records that the current user does
     # not have permission to view.
     #
@@ -27,7 +27,7 @@ module Gitlab
       def user_can_reference?(node)
         if node.has_attribute?('data-reference-filter')
           reference_type = node.attr('data-reference-filter')
-          reference_filter = Gitlab::Markdown.const_get(reference_type)
+          reference_filter = Banzai::Filter.const_get(reference_type)
 
           reference_filter.user_can_reference?(current_user, node, context)
         else

lib/gitlab/markdown/reference_filter.rb → lib/banzai/filter/reference_filter.rb

 require 'active_support/core_ext/string/output_safety'
-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # Base class for GitLab Flavored Markdown reference filters.
     #
     # References within <pre>, <code>, <a>, and <style> elements are ignored.
@@ -12,27 +12,6 @@ module Gitlab
     #   :project (required) - Current project, ignored if reference is cross-project.
     #   :only_path          - Generate path-only links.
     class ReferenceFilter < HTML::Pipeline::Filter
-      LazyReference = Struct.new(:klass, :ids) do
-        def self.load(refs)
-          lazy_references, values = refs.partition { |ref| ref.is_a?(self) }
-
-          lazy_values = lazy_references.group_by(&:klass).flat_map do |klass, refs|
-            ids = refs.flat_map(&:ids)
-            klass.where(id: ids)
-          end
-
-          values + lazy_values
-        end
-
-        def load
-          self.klass.where(id: self.ids)
-        end
-      end
-
-      def self.[](name)
-        Markdown.const_get("#{name.to_s.camelize}ReferenceFilter")
-      end
-
       def self.user_can_reference?(user, node, context)
         if node.has_attribute?('data-project')
           project_id = node.attr('data-project').to_i

lib/gitlab/markdown/filter/reference_gatherer_filter.rb → lib/banzai/filter/reference_gatherer_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that gathers all referenced records that the current user has
     # permission to view.
     #
@@ -20,7 +20,7 @@ module Gitlab
           gather_references(node)
         end
 
-        load_lazy_references unless context[:load_lazy_references] == false
+        load_lazy_references unless ReferenceExtractor.lazy?
 
         doc
       end
@@ -31,7 +31,7 @@ module Gitlab
         return unless node.has_attribute?('data-reference-filter')
 
         reference_type = node.attr('data-reference-filter')
-        reference_filter = Gitlab::Markdown.const_get(reference_type)
+        reference_filter = Banzai::Filter.const_get(reference_type)
 
         return if context[:reference_filter] && reference_filter != context[:reference_filter]
 
@@ -47,11 +47,10 @@ module Gitlab
         end
       end
 
-      # Will load all references of one type using one query.
       def load_lazy_references
         refs = result[:references]
         refs.each do |type, values|
-          refs[type] = ReferenceFilter::LazyReference.load(values)
+          refs[type] = ReferenceExtractor.lazily(values)
         end
       end
 

lib/gitlab/markdown/filter/relative_link_filter.rb → lib/banzai/filter/relative_link_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 require 'uri'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that "fixes" relative links to files in a repository.
     #
     # Context options:

lib/gitlab/markdown/filter/sanitization_filter.rb → lib/banzai/filter/sanitization_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 require 'html/pipeline/sanitization_filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # Sanitize HTML
     #
     # Extends HTML::Pipeline::SanitizationFilter with a custom whitelist.

lib/gitlab/markdown/filter/snippet_reference_filter.rb → lib/banzai/filter/snippet_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces snippet references with links. References to
     # snippets that do not exist are ignored.
     #

lib/gitlab/markdown/filter/syntax_highlight_filter.rb → lib/banzai/filter/syntax_highlight_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 require 'rouge/plugins/redcarpet'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML Filter to highlight fenced code blocks
     #
     class SyntaxHighlightFilter < HTML::Pipeline::Filter

lib/gitlab/markdown/filter/table_of_contents_filter.rb → lib/banzai/filter/table_of_contents_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that adds an anchor child element to all Headers in a
     # document, so that they can be linked to.
     #

lib/gitlab/markdown/filter/task_list_filter.rb → lib/banzai/filter/task_list_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'task_list/filter'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # Work around a bug in the default TaskList::Filter that adds a `task-list`
     # class to every list element, regardless of whether or not it contains a
     # task list.

lib/gitlab/markdown/filter/upload_link_filter.rb → lib/banzai/filter/upload_link_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 require 'html/pipeline/filter'
 require 'uri'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that "fixes" relative upload links to files.
     # Context options:
     #   :project (required) - Current project

lib/gitlab/markdown/filter/user_reference_filter.rb → lib/banzai/filter/user_reference_filter.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Filter
     # HTML filter that replaces user or group references with links.
     #
     # A special `@all` reference is also supported.

lib/banzai/lazy_reference.rb

+require 'banzai'
+
+module Banzai
+  class LazyReference
+    def self.load(refs)
+      lazy_references, values = refs.partition { |ref| ref.is_a?(self) }
+
+      lazy_values = lazy_references.group_by(&:klass).flat_map do |klass, refs|
+        ids = refs.flat_map(&:ids)
+        klass.where(id: ids)
+      end
+
+      values + lazy_values
+    end
+
+    attr_reader :klass, :ids
+
+    def initialize(klass, ids)
+      @klass = klass
+      @ids = Array.wrap(ids).map(&:to_i)
+    end
+
+    def load
+      self.klass.where(id: self.ids)
+    end
+  end
+end

lib/banzai/pipeline.rb

+require 'banzai'
+
+module Banzai
+  module Pipeline
+    def self.[](name)
+      name ||= :full
+      const_get("#{name.to_s.camelize}Pipeline")
+    end
+  end
+end

lib/gitlab/markdown/pipeline/asciidoc_pipeline.rb → lib/banzai/pipeline/asciidoc_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
-    class AsciidocPipeline < Pipeline
+module Banzai
+  module Pipeline
+    class AsciidocPipeline < BasePipeline
       def self.filters
         [
-          Gitlab::Markdown::RelativeLinkFilter
+          Filter::RelativeLinkFilter
         ]
       end
     end

lib/gitlab/markdown/pipeline/atom_pipeline.rb → lib/banzai/pipeline/atom_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     class AtomPipeline < FullPipeline
       def self.transform_context(context)
         super(context).merge(

lib/banzai/pipeline/base_pipeline.rb

+require 'banzai'
+require 'html/pipeline'
+
+module Banzai
+  module Pipeline
+    class BasePipeline
+      def self.filters
+        []
+      end
+
+      def self.transform_context(context)
+        context
+      end
+
+      def self.html_pipeline
+        @html_pipeline ||= HTML::Pipeline.new(filters)
+      end
+
+      class << self
+        %i(call to_document to_html).each do |meth|
+          define_method(meth) do |text, context|
+            context = transform_context(context)
+
+            html_pipeline.send(meth, text, context)
+          end
+        end
+      end
+    end
+  end
+end

lib/gitlab/markdown/combined_pipeline.rb → lib/banzai/pipeline/combined_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     module CombinedPipeline
       def self.new(*pipelines)
-        Class.new(Pipeline) do
+        Class.new(BasePipeline) do
           const_set :PIPELINES, pipelines
 
           def self.pipelines

lib/gitlab/markdown/pipeline/description_pipeline.rb → lib/banzai/pipeline/description_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     class DescriptionPipeline < FullPipeline
       def self.transform_context(context)
         super(context).merge(

lib/gitlab/markdown/pipeline/email_pipeline.rb → lib/banzai/pipeline/email_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     class EmailPipeline < FullPipeline
       def self.transform_context(context)
         super(context).merge(

lib/gitlab/markdown/pipeline/full_pipeline.rb → lib/banzai/pipeline/full_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     class FullPipeline < CombinedPipeline.new(PlainMarkdownPipeline, GfmPipeline)
 
     end

lib/banzai/pipeline/gfm_pipeline.rb

+require 'banzai'
+
+module Banzai
+  module Pipeline
+    class GfmPipeline < BasePipeline
+      def self.filters
+        @filters ||= [
+          Filter::SyntaxHighlightFilter,
+          Filter::SanitizationFilter,
+
+          Filter::UploadLinkFilter,
+          Filter::EmojiFilter,
+          Filter::TableOfContentsFilter,
+          Filter::AutolinkFilter,
+          Filter::ExternalLinkFilter,
+
+          Filter::UserReferenceFilter,
+          Filter::IssueReferenceFilter,
+          Filter::ExternalIssueReferenceFilter,
+          Filter::MergeRequestReferenceFilter,
+          Filter::SnippetReferenceFilter,
+          Filter::CommitRangeReferenceFilter,
+          Filter::CommitReferenceFilter,
+          Filter::LabelReferenceFilter,
+
+          Filter::TaskListFilter
+        ]
+      end
+
+      def self.transform_context(context)
+        context.merge(
+          only_path: true,
+
+          # EmojiFilter
+          asset_host: Gitlab::Application.config.asset_host,
+          asset_root: Gitlab.config.gitlab.base_url
+        )
+      end
+    end
+  end
+end

lib/gitlab/markdown/pipeline/note_pipeline.rb → lib/banzai/pipeline/note_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     class NotePipeline < FullPipeline
       def self.transform_context(context)
         super(context).merge(

lib/gitlab/markdown/pipeline/plain_markdown_pipeline.rb → lib/banzai/pipeline/plain_markdown_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
-    class PlainMarkdownPipeline < Pipeline
+module Banzai
+  module Pipeline
+    class PlainMarkdownPipeline < BasePipeline
       def self.filters
         [
-          Gitlab::Markdown::MarkdownFilter
+          Filter::MarkdownFilter
         ]
       end
     end

lib/gitlab/markdown/pipeline/post_process_pipeline.rb → lib/banzai/pipeline/post_process_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
-    class PostProcessPipeline < Pipeline
+module Banzai
+  module Pipeline
+    class PostProcessPipeline < BasePipeline
       def self.filters
         [
-          Gitlab::Markdown::RelativeLinkFilter, 
-          Gitlab::Markdown::RedactorFilter
+          Filter::RelativeLinkFilter,
+          Filter::RedactorFilter
         ]
       end
 

lib/gitlab/markdown/pipeline/reference_extraction_pipeline.rb → lib/banzai/pipeline/reference_extraction_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
-    class ReferenceExtractionPipeline < Pipeline
+module Banzai
+  module Pipeline
+    class ReferenceExtractionPipeline < BasePipeline
       def self.filters
         [
-          Gitlab::Markdown::ReferenceGathererFilter
+          Filter::ReferenceGathererFilter
         ]
       end
     end

lib/gitlab/markdown/pipeline/single_line_pipeline.rb → lib/banzai/pipeline/single_line_pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
-module Gitlab
-  module Markdown
+module Banzai
+  module Pipeline
     class SingleLinePipeline < GfmPipeline
 
     end

lib/banzai/reference_extractor.rb

+require 'banzai'
+
+module Banzai
+  # Extract possible GFM references from an arbitrary String for further processing.
+  class ReferenceExtractor
+    class << self
+      LAZY_KEY = :banzai_reference_extractor_lazy
+
+      def lazy?
+        Thread.current[LAZY_KEY]
+      end
+
+      def lazily(values = nil, &block)
+        return (values || block.call).uniq if lazy?
+
+        begin
+          Thread.current[LAZY_KEY] = true
+
+          values ||= block.call
+
+          Banzai::LazyReference.load(values.uniq).uniq
+        ensure
+          Thread.current[LAZY_KEY] = false
+        end
+      end
+    end
+
+    def initialize
+      @texts = []
+    end
+
+    def analyze(text, context = {})
+      @texts << Renderer.render(text, context)
+    end
+
+    def references(type, context = {})
+      filter = Banzai::Filter["#{type}_reference"]
+
+      context.merge!(
+        pipeline: :reference_extraction,
+
+        # ReferenceGathererFilter
+        reference_filter: filter
+      )
+
+      self.class.lazily do
+        @texts.flat_map do |html|
+          text_context = context.dup
+          result = Renderer.render_result(html, text_context)
+          result[:references][type]
+        end.uniq
+      end
+    end
+  end
+end

lib/gitlab/markdown.rb → lib/banzai/renderer.rb

-require 'html/pipeline'
-
-module Gitlab
-  # Custom parser for GitLab-flavored Markdown
-  #
-  # See the files in `lib/gitlab/markdown/` for specific processing information.
-  module Markdown
+module Banzai
+  module Renderer
     # Convert a Markdown String into an HTML-safe String of HTML
     #
     # Note that while the returned HTML will have been sanitized of dangerous
@@ -75,41 +70,7 @@ module Gitlab
 
     def self.full_cache_key(cache_key, pipeline_name)
       return unless cache_key
-      ["markdown", *cache_key, pipeline_name || :full]
+      ["banzai", *cache_key, pipeline_name || :full]
     end
-
-    # Provide autoload paths for filters to prevent a circular dependency error
-    autoload :AutolinkFilter,               'gitlab/markdown/filter/autolink_filter'
-    autoload :CommitRangeReferenceFilter,   'gitlab/markdown/filter/commit_range_reference_filter'
-    autoload :CommitReferenceFilter,        'gitlab/markdown/filter/commit_reference_filter'
-    autoload :EmojiFilter,                  'gitlab/markdown/filter/emoji_filter'
-    autoload :ExternalIssueReferenceFilter, 'gitlab/markdown/filter/external_issue_reference_filter'
-    autoload :ExternalLinkFilter,           'gitlab/markdown/filter/external_link_filter'
-    autoload :IssueReferenceFilter,         'gitlab/markdown/filter/issue_reference_filter'
-    autoload :LabelReferenceFilter,         'gitlab/markdown/filter/label_reference_filter'
-    autoload :MarkdownFilter,               'gitlab/markdown/filter/markdown_filter'
-    autoload :MergeRequestReferenceFilter,  'gitlab/markdown/filter/merge_request_reference_filter'
-    autoload :RedactorFilter,               'gitlab/markdown/filter/redactor_filter'
-    autoload :ReferenceGathererFilter,      'gitlab/markdown/filter/reference_gatherer_filter'
-    autoload :RelativeLinkFilter,           'gitlab/markdown/filter/relative_link_filter'
-    autoload :SanitizationFilter,           'gitlab/markdown/filter/sanitization_filter'
-    autoload :SnippetReferenceFilter,       'gitlab/markdown/filter/snippet_reference_filter'
-    autoload :SyntaxHighlightFilter,        'gitlab/markdown/filter/syntax_highlight_filter'
-    autoload :TableOfContentsFilter,        'gitlab/markdown/filter/table_of_contents_filter'
-    autoload :TaskListFilter,               'gitlab/markdown/filter/task_list_filter'
-    autoload :UserReferenceFilter,          'gitlab/markdown/filter/user_reference_filter'
-    autoload :UploadLinkFilter,             'gitlab/markdown/filter/upload_link_filter'
-
-    autoload :AsciidocPipeline,             'gitlab/markdown/pipeline/asciidoc_pipeline'
-    autoload :AtomPipeline,                 'gitlab/markdown/pipeline/atom_pipeline'
-    autoload :DescriptionPipeline,          'gitlab/markdown/pipeline/description_pipeline'
-    autoload :EmailPipeline,                'gitlab/markdown/pipeline/email_pipeline'
-    autoload :FullPipeline,                 'gitlab/markdown/pipeline/full_pipeline'
-    autoload :GfmPipeline,                  'gitlab/markdown/pipeline/gfm_pipeline'
-    autoload :NotePipeline,                 'gitlab/markdown/pipeline/note_pipeline'
-    autoload :PlainMarkdownPipeline,        'gitlab/markdown/pipeline/plain_markdown_pipeline'
-    autoload :PostProcessPipeline,          'gitlab/markdown/pipeline/post_process_pipeline'
-    autoload :ReferenceExtractionPipeline,  'gitlab/markdown/pipeline/reference_extraction_pipeline'
-    autoload :SingleLinePipeline,           'gitlab/markdown/pipeline/single_line_pipeline'
   end
 end

lib/gitlab/asciidoc.rb

@@ -32,7 +32,7 @@ module Gitlab
       html = ::Asciidoctor.convert(input, asciidoc_opts)
 
       if context[:project]
-        html = Gitlab::Markdown.render(html, context.merge(pipeline: :asciidoc))
+        html = Banzai.render(html, context.merge(pipeline: :asciidoc))
       end
 
       html.html_safe

lib/gitlab/markdown/cross_project_reference.rb

-require 'gitlab/markdown'
-
-module Gitlab
-  module Markdown
-    # Common methods for ReferenceFilters that support an optional cross-project
-    # reference.
-    module CrossProjectReference
-      # Given a cross-project reference string, get the Project record
-      #
-      # Defaults to value of `context[:project]` if:
-      # * No reference is given OR
-      # * Reference given doesn't exist
-      #
-      # ref - String reference.
-      #
-      # Returns a Project, or nil if the reference can't be found
-      def project_from_ref(ref)
-        return context[:project] unless ref
-
-        Project.find_with_namespace(ref)
-      end
-    end
-  end
-end

lib/gitlab/markdown/pipeline.rb

-require 'gitlab/markdown'
+require 'banzai'
 
 module Gitlab
   module Markdown
     class Pipeline
       def self.[](name)
         name ||= :full
-        Markdown.const_get("#{name.to_s.camelize}Pipeline")
+        const_get("#{name.to_s.camelize}Pipeline")
       end
 
       def self.filters

lib/gitlab/markdown/pipeline/gfm_pipeline.rb

-require 'gitlab/markdown'
-
-module Gitlab
-  module Markdown
-    class GfmPipeline < Pipeline
-      def self.filters
-        @filters ||= [
-          Gitlab::Markdown::SyntaxHighlightFilter,
-          Gitlab::Markdown::SanitizationFilter,
-
-          Gitlab::Markdown::UploadLinkFilter,
-          Gitlab::Markdown::EmojiFilter,
-          Gitlab::Markdown::TableOfContentsFilter,
-          Gitlab::Markdown::AutolinkFilter,
-          Gitlab::Markdown::ExternalLinkFilter,
-
-          Gitlab::Markdown::UserReferenceFilter,
-          Gitlab::Markdown::IssueReferenceFilter,
-          Gitlab::Markdown::ExternalIssueReferenceFilter,
-          Gitlab::Markdown::MergeRequestReferenceFilter,
-          Gitlab::Markdown::SnippetReferenceFilter,
-          Gitlab::Markdown::CommitRangeReferenceFilter,
-          Gitlab::Markdown::CommitReferenceFilter,
-          Gitlab::Markdown::LabelReferenceFilter,
-
-          Gitlab::Markdown::TaskListFilter
-        ]
-      end
-
-      def self.transform_context(context)
-        context.merge(
-          only_path: true,
-
-          # EmojiFilter
-          asset_host: Gitlab::Application.config.asset_host,
-          asset_root: Gitlab.config.gitlab.base_url
-        )
-      end
-    end
-  end
-end

lib/gitlab/reference_extractor.rb

-require 'gitlab/markdown'
+require 'banzai'
 
 module Gitlab
   # Extract possible GFM references from an arbitrary String for further processing.
-  class ReferenceExtractor
-    attr_accessor :project, :current_user, :load_lazy_references
+  class ReferenceExtractor < Banzai::ReferenceExtractor
+    attr_accessor :project, :current_user
 
-    def initialize(project, current_user = nil, load_lazy_references: true)
+    def initialize(project, current_user = nil)
       @project = project
       @current_user = current_user
-      @load_lazy_references = load_lazy_references
 
-      @texts = []
       @references = {}
+
+      super()
     end
 
-    def analyze(text, options = {})
-      @texts << Gitlab::Markdown.render(text, options.merge(project: project))
+    def analyze(text, context = {})
+      super(text, context.merge(project: project))
     end
 
     %i(user label issue merge_request snippet commit commit_range).each do |type|
       define_method("#{type}s") do
-        @references[type] ||= pipeline_result(type)
-      end
+        @references[type] ||= references(type, project: project, current_user: current_user)
       end
-
-    private
-
-    # Instantiate and call HTML::Pipeline with a single reference filter type,
-    # returning the result
-    #
-    # filter_type - Symbol reference type (e.g., :commit, :issue, etc.)
-    #
-    # Returns the results Array for the requested filter type
-    def pipeline_result(filter_type)
-      filter = Gitlab::Markdown::ReferenceFilter[filter_type]
-
-      context = {
-        pipeline: :reference_extraction,
-
-        project:      project,
-        current_user: current_user,
-
-        # ReferenceGathererFilter
-        load_lazy_references: false,
-        reference_filter:     filter
-      }
-
-      values = @texts.flat_map do |html|
-        text_context = context.dup
-        result = Gitlab::Markdown.render_result(html, text_context)
-        result[:references][filter_type]
-      end.uniq
-
-      if @load_lazy_references
-        values = Gitlab::Markdown::ReferenceFilter::LazyReference.load(values).uniq
-      end
-
-      values
     end
   end
 end

lib/tasks/gitlab/check.rake

@@ -822,12 +822,29 @@ namespace :gitlab do
 
       namespace_dirs.each do |namespace_dir|
         repo_dirs = Dir.glob(File.join(namespace_dir, '*'))
-        repo_dirs.each do |dir|
-          puts "\nChecking repo at #{dir}"
-          system(*%W(#{Gitlab.config.git.bin_path} fsck), chdir: dir)
+        repo_dirs.each { |repo_dir| check_repo_integrity(repo_dir) }
       end
     end
   end
+
+  namespace :user do
+    desc "GitLab | Check the integrity of a specific user's repositories"
+    task :check_repos, [:username] => :environment do |t, args|
+      username = args[:username] || prompt("Check repository integrity for which username? ".blue)
+      user = User.find_by(username: username)
+      if user
+        repo_dirs = user.authorized_projects.map do |p|
+                      File.join(
+                        Gitlab.config.gitlab_shell.repos_path,
+                        "#{p.path_with_namespace}.git"
+                      )
+                    end
+
+        repo_dirs.each { |repo_dir| check_repo_integrity(repo_dir) }
+      else
+        puts "\nUser '#{username}' not found".red
+      end
+    end
   end
 
   # Helper methods
@@ -952,4 +969,35 @@ namespace :gitlab do
       false
     end
   end
+
+  def check_repo_integrity(repo_dir)
+    puts "\nChecking repo at #{repo_dir.yellow}"
+
+    git_fsck(repo_dir)
+    check_config_lock(repo_dir)
+    check_ref_locks(repo_dir)
+  end
+
+  def git_fsck(repo_dir)
+    puts "Running `git fsck`".yellow
+    system(*%W(#{Gitlab.config.git.bin_path} fsck), chdir: repo_dir)
+  end
+
+  def check_config_lock(repo_dir)
+    config_exists = File.exist?(File.join(repo_dir,'config.lock'))
+    config_output = config_exists ? 'yes'.red : 'no'.green
+    puts "'config.lock' file exists?".yellow + " ... #{config_output}"
+  end
+
+  def check_ref_locks(repo_dir)
+    lock_files = Dir.glob(File.join(repo_dir,'refs/heads/*.lock'))
+    if lock_files.present?
+      puts "Ref lock files exist:".red
+      lock_files.each do |lock_file|
+        puts "  #{lock_file}"
+      end
+    else
+      puts "No ref lock files exist".green
+    end
+  end
 end

spec/benchmarks/lib/gitlab/markdown/reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::ReferenceFilter, benchmark: true do
+describe Banzai::Filter::ReferenceFilter, benchmark: true do
   let(:input) do
     html = <<-EOF
 <p>Hello @alice and @bob, how are you doing today?</p>

spec/features/issues/note_polling_spec.rb

+require 'spec_helper'
+
+feature 'Issue notes polling' do
+  let!(:project) { create(:project, :public) }
+  let!(:issue) { create(:issue, project: project) }
+
+  background do
+    visit namespace_project_issue_path(project.namespace, project, issue)
+  end
+
+  scenario 'Another user adds a comment to an issue', js: true do
+    note = create(:note_on_issue, noteable: issue, note: 'Looks good!')
+    page.execute_script('notes.refresh();')
+    expect(page).to have_selector("#note_#{note.id}", text: 'Looks good!')
+  end
+end

spec/lib/gitlab/markdown/cross_project_reference_spec.rb → spec/lib/banzai/cross_project_reference_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::CrossProjectReference, lib: true do
+describe Banzai::CrossProjectReference, lib: true do
   include described_class
 
   describe '#project_from_ref' do

spec/lib/gitlab/markdown/filter/autolink_filter_spec.rb → spec/lib/banzai/filter/autolink_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::AutolinkFilter, lib: true do
+describe Banzai::Filter::AutolinkFilter, lib: true do
   include FilterSpecHelper
 
   let(:link) { 'http://about.gitlab.com/' }

spec/lib/gitlab/markdown/filter/commit_range_reference_filter_spec.rb → spec/lib/banzai/filter/commit_range_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::CommitRangeReferenceFilter, lib: true do
+describe Banzai::Filter::CommitRangeReferenceFilter, lib: true do
   include FilterSpecHelper
 
   let(:project) { create(:project, :public) }

spec/lib/gitlab/markdown/filter/commit_reference_filter_spec.rb → spec/lib/banzai/filter/commit_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::CommitReferenceFilter, lib: true do
+describe Banzai::Filter::CommitReferenceFilter, lib: true do
   include FilterSpecHelper
 
   let(:project) { create(:project, :public) }

spec/lib/gitlab/markdown/filter/emoji_filter_spec.rb → spec/lib/banzai/filter/emoji_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::EmojiFilter, lib: true do
+describe Banzai::Filter::EmojiFilter, lib: true do
   include FilterSpecHelper
 
   before do

spec/lib/gitlab/markdown/filter/external_issue_reference_filter_spec.rb → spec/lib/banzai/filter/external_issue_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::ExternalIssueReferenceFilter, lib: true do
+describe Banzai::Filter::ExternalIssueReferenceFilter, lib: true do
   include FilterSpecHelper
 
   def helper

spec/lib/gitlab/markdown/filter/external_link_filter_spec.rb → spec/lib/banzai/filter/external_link_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::ExternalLinkFilter, lib: true do
+describe Banzai::Filter::ExternalLinkFilter, lib: true do
   include FilterSpecHelper
 
   it 'ignores elements without an href attribute' do

spec/lib/gitlab/markdown/filter/issue_reference_filter_spec.rb → spec/lib/banzai/filter/issue_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::IssueReferenceFilter, lib: true do
+describe Banzai::Filter::IssueReferenceFilter, lib: true do
   include FilterSpecHelper
 
   def helper

spec/lib/gitlab/markdown/filter/label_reference_filter_spec.rb → spec/lib/banzai/filter/label_reference_filter_spec.rb

 require 'spec_helper'
 require 'html/pipeline'
 
-describe Gitlab::Markdown::LabelReferenceFilter, lib: true do
+describe Banzai::Filter::LabelReferenceFilter, lib: true do
   include FilterSpecHelper
 
   let(:project)   { create(:empty_project, :public) }

spec/lib/gitlab/markdown/filter/merge_request_reference_filter_spec.rb → spec/lib/banzai/filter/merge_request_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::MergeRequestReferenceFilter, lib: true do
+describe Banzai::Filter::MergeRequestReferenceFilter, lib: true do
   include FilterSpecHelper
 
   let(:project) { create(:project, :public) }

spec/lib/gitlab/markdown/filter/redactor_filter_spec.rb → spec/lib/banzai/filter/redactor_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::RedactorFilter, lib: true do
+describe Banzai::Filter::RedactorFilter, lib: true do
   include ActionView::Helpers::UrlHelper
   include FilterSpecHelper
 

spec/lib/gitlab/markdown/filter/reference_gatherer_filter_spec.rb → spec/lib/banzai/filter/reference_gatherer_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::ReferenceGathererFilter, lib: true do
+describe Banzai::Filter::ReferenceGathererFilter, lib: true do
   include ActionView::Helpers::UrlHelper
   include FilterSpecHelper
 

spec/lib/gitlab/markdown/filter/relative_link_filter_spec.rb → spec/lib/banzai/filter/relative_link_filter_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-describe Gitlab::Markdown::RelativeLinkFilter, lib: true do
+describe Banzai::Filter::RelativeLinkFilter, lib: true do
   def filter(doc, contexts = {})
     contexts.reverse_merge!({
       commit:         project.commit,

spec/lib/gitlab/markdown/filter/sanitization_filter_spec.rb → spec/lib/banzai/filter/sanitization_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::SanitizationFilter, lib: true do
+describe Banzai::Filter::SanitizationFilter, lib: true do
   include FilterSpecHelper
 
   describe 'default whitelist' do

spec/lib/gitlab/markdown/filter/snippet_reference_filter_spec.rb → spec/lib/banzai/filter/snippet_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::SnippetReferenceFilter, lib: true do
+describe Banzai::Filter::SnippetReferenceFilter, lib: true do
   include FilterSpecHelper
 
   let(:project)   { create(:empty_project, :public) }

spec/lib/gitlab/markdown/filter/syntax_highlight_filter_spec.rb → spec/lib/banzai/filter/syntax_highlight_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::SyntaxHighlightFilter, lib: true do
+describe Banzai::Filter::SyntaxHighlightFilter, lib: true do
   include FilterSpecHelper
 
   it 'highlights valid code blocks' do

spec/lib/gitlab/markdown/filter/table_of_contents_filter_spec.rb → spec/lib/banzai/filter/table_of_contents_filter_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-describe Gitlab::Markdown::TableOfContentsFilter, lib: true do
+describe Banzai::Filter::TableOfContentsFilter, lib: true do
   include FilterSpecHelper
 
   def header(level, text)

spec/lib/gitlab/markdown/filter/task_list_filter_spec.rb → spec/lib/banzai/filter/task_list_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::TaskListFilter, lib: true do
+describe Banzai::Filter::TaskListFilter, lib: true do
   include FilterSpecHelper
 
   it 'does not apply `task-list` class to non-task lists' do

spec/lib/gitlab/markdown/filter/upload_link_filter_spec.rb → spec/lib/banzai/filter/upload_link_filter_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-describe Gitlab::Markdown::UploadLinkFilter, lib: true do
+describe Banzai::Filter::UploadLinkFilter, lib: true do
   def filter(doc, contexts = {})
     contexts.reverse_merge!({
       project: project

spec/lib/gitlab/markdown/filter/user_reference_filter_spec.rb → spec/lib/banzai/filter/user_reference_filter_spec.rb

 require 'spec_helper'
 
-describe Gitlab::Markdown::UserReferenceFilter, lib: true do
+describe Banzai::Filter::UserReferenceFilter, lib: true do
   include FilterSpecHelper
 
   let(:project)   { create(:empty_project, :public) }

spec/lib/gitlab/asciidoc_spec.rb

@@ -50,7 +50,7 @@ module Gitlab
         filtered_html = '<b>ASCII</b>'
 
         allow(Asciidoctor).to receive(:convert).and_return(html)
-        expect(Gitlab::Markdown).to receive(:render)
+        expect(Banzai).to receive(:render)
           .with(html, context.merge(pipeline: :asciidoc))
           .and_return(filtered_html)
 

spec/support/filter_spec_helper.rb

-# Helper methods for Gitlab::Markdown filter specs
+# Helper methods for Banzai filter specs
 #
 # Must be included into specs manually
 module FilterSpecHelper
@@ -10,49 +10,49 @@ module FilterSpecHelper
   # if none is provided.
   #
   # html     - HTML String to pass to the filter's `call` method.
-  # contexts - Hash context for the filter. (default: {project: project})
+  # context - Hash context for the filter. (default: {project: project})
   #
   # Returns a Nokogiri::XML::DocumentFragment
-  def filter(html, contexts = {})
+  def filter(html, context = {})
     if defined?(project)
-      contexts.reverse_merge!(project: project)
+      context.reverse_merge!(project: project)
     end
 
-    described_class.call(html, contexts)
+    described_class.call(html, context)
   end
 
   # Run text through HTML::Pipeline with the current filter and return the
   # result Hash
   #
   # body     - String text to run through the pipeline
-  # contexts - Hash context for the filter. (default: {project: project})
+  # context - Hash context for the filter. (default: {project: project})
   #
   # Returns the Hash
-  def pipeline_result(body, contexts = {})
-    contexts.reverse_merge!(project: project) if defined?(project)
+  def pipeline_result(body, context = {})
+    context.reverse_merge!(project: project) if defined?(project)
 
-    pipeline = HTML::Pipeline.new([described_class], contexts)
+    pipeline = HTML::Pipeline.new([described_class], context)
     pipeline.call(body)
   end
 
-  def reference_pipeline(contexts = {})
-    contexts.reverse_merge!(project: project) if defined?(project)
+  def reference_pipeline(context = {})
+    context.reverse_merge!(project: project) if defined?(project)
 
     filters = [
-      Gitlab::Markdown::AutolinkFilter,
+      Banzai::Filter::AutolinkFilter,
       described_class,
-      Gitlab::Markdown::ReferenceGathererFilter
+      Banzai::Filter::ReferenceGathererFilter
     ]
 
-    HTML::Pipeline.new(filters, contexts)
+    HTML::Pipeline.new(filters, context)
   end
 
-  def reference_pipeline_result(body, contexts = {})
-    reference_pipeline(contexts).call(body)
+  def reference_pipeline_result(body, context = {})
+    reference_pipeline(context).call(body)
   end
 
-  def reference_filter(html, contexts = {})
-    reference_pipeline(contexts).to_document(html)
+  def reference_filter(html, context = {})
+    reference_pipeline(context).to_document(html)
   end
 
   # Modify a String reference to make it invalid