## Coding style
-When writing code it is generally a good idea to try and match your
-formatting to that of any existing code in the same file, or to other
-similar files if you are writing new code. Consistency of layout is
-far more important than the layout itself as it makes reading code
-much easier.
+We use [Rubocop](https://github.com/rubocop-hq/rubocop) (for ruby files)
+and [ERB Lint](https://github.com/Shopify/erb-lint) (for erb templates)
+to help maintain consistency in our code. You can run these utilities during
+development to check that your code matches our guidelines:
-One golden rule of formatting -- please don't use tabs in your code
-as they will cause the file to be formatted differently for different
-people depending on how they have their editor configured.
+```
+bundle exec rubocop
+bundle exec rake eslint
+bundle exec erblint .
+```
## Testing
You can run the existing test suite with:
```
-bundle exec rake test
+bundle exec rails test:all
```
-You can generate test coverage stats with:
-
-```
-sudo gem install rcov
-rcov -x gems test/*/*.rb
-```
+You can view test coverage statistics by browsing the `coverage` directory.
The tests are automatically run on Pull Requests and other commits with the
results shown on [Travis CI](https://travis-ci.org/openstreetmap/openstreetmap-website).
+## Static Analysis
+
+We also perform static analysis of our code. You can run the analysis yourself with:
+
+```
+bundle exec brakeman -q
+```
+
## Comments
Sometimes it's not apparent from the code itself what it does, or,
and why it should be the way it is.
* Check existing comments to ensure that they are not misleading.
+## i18n
+
+If you make a change that involve the locale files (in `config/locales`) then please
+only submit changes to the `en.yml` file. The other files are updated via
+[Translatewiki](https://translatewiki.net/wiki/Translating:OpenStreetMap) and should
+not be included in your pull request.
+
+### Nominatim prefixes
+
+I18n keys under the `geocoder.search_osm_nominatim` keyspace are managed by the
+Nominatim maintainers. From time to time they run stats over the Nominatim
+database, and update the list of available keys manually.
+
+Adding or removing keys to this list is therefore discouraged, but contributions
+to the descriptive texts are welcome.
+
## Code Documentation
To generate the HTML documentation of the API/rails code, run the command