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vendor/symfony/intl/Symfony/Component/Intl/CONTRIBUTING.md

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+Contributing to the Intl component
+==================================
+
+A very good way of contributing to the Intl component is by updating the
+included data for the ICU version you have installed on your system.
+
+Preparation
+-----------
+
+To prepare, you need to install the development dependencies of the component.
+
+    $ cd /path/to/Symfony/Component/Intl
+    $ composer.phar install --dev
+
+Determining your ICU version
+---------------------------
+
+The ICU version installed in your PHP environment can be found by running
+icu-version.php:
+
+    $ php Resources/bin/icu-version.php
+
+Updating the ICU data
+---------------------
+
+To update the data files, run the update-icu-component.php script:
+
+    $ php Resources/bin/update-icu-component.php
+
+The script needs the binaries "svn" and "make" to be available on your system.
+It will download the latest version of the ICU sources for the ICU version
+installed in your PHP environment. The script will then compile the "genrb"
+binary and use it to compile the ICU data files to binaries. The binaries are
+copied to the Resources/ directory of the Icu component found in the
+vendor/symfony/icu/ directory.
+
+Updating the stub data
+----------------------
+
+In the previous step you updated the Icu component for the ICU version
+installed on your system. If you are using the latest ICU version, you should
+also create the stub data files which will be used by people who don't have
+the intl extension installed.
+
+To update the stub files, run the update-stubs.php script:
+
+    $ php Resources/bin/update-stubs.php
+
+The script will fail if you don't have the latest ICU version. If you want to
+upgrade the ICU version, adjust the return value of the
+`Intl::getIcuStubVersion()` before you run the script.
+
+The script creates copies of the binary resource bundles in the Icu component
+and stores them in the Resources/ directory of the Intl component. The copies
+are made for the locale "en" only and are stored in .php files, so that they
+can be read even if the intl extension is not available.
+
+Creating a pull request
+-----------------------
+
+You need to create up to two pull requests:
+
+* If you updated the Icu component, you need to push that change and create a
+  pull request in the `symfony/Icu` repository. Make sure to submit the pull
+  request to the correct master branch. If you updated the ICU data for version
+  4.8, your pull request goes to branch `48-master`, for version 49 to
+  `49-master` and so on.
+
+* If you updated the stub files of the Intl component, you need to push that
+  change and create a pull request in the `symfony/symfony` repository. The
+  pull request should be based on the `master` branch.
+
+Combining .res files to a .dat-package
+--------------------------------------
+
+The individual *.res files can be combined into a single .dat-file.
+Unfortunately, PHP's `ResourceBundle` class is currently not able to handle
+.dat-files.
+
+Once it is, the following steps have to be followed to build the .dat-file:
+
+1. Package the resource bundles into a single file
+
+   $ find . -name *.res | sed -e "s/\.\///g" > packagelist.txt
+   $ pkgdata -p region -T build -d . packagelist.txt
+
+2. Clean up
+
+   $ rm -rf build packagelist.txt
+
+3. You can now move region.dat to replace the version bundled with Symfony2.