<?xml version="1.0"?>
<ruleset name="WordPress-Timber">
    <description>A custom set of rules to check coding standards for Timber.</description>

    <!--
        Default settings for command line usage
    -->

    <!-- Exclude folders and files from being checked. -->
    <exclude-pattern>*/tests/*</exclude-pattern>
    <exclude-pattern>*.twig</exclude-pattern>

    <!-- If no files or directories are specified on the command line, check all relevant files. -->
    <file>./lib</file>

    <!-- Use colors in output. -->
    <arg name="colors"/>

    <!-- Show sniff names and progress. -->
    <arg value="sp"/>

    <!--
        WordPress-Extra
        Best practices beyond core WordPress Coding Standards.

        The WordPress-Core standard doesn’t have to be included here,
        because WordPress-Extra already includes it.
    -->
    <rule ref="WordPress-Extra">
        <!-- Do not check for proper WordPress file names. -->
        <exclude name="WordPress.Files.FileName.NotHyphenatedLowercase" />
    </rule>

    <!--
        WordPress-Docs
        WordPress Coding Standards for Inline Documentation and Comments.
    -->
    <rule ref="WordPress-Docs" />

    <!--
        File Names

        The WordPress Coding Standards state that all class files should start with 'class-'. Timber
        follows the PSR-0 standard for naming class files, because it uses autoloading via Composer.

        @link https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/wiki/Customizable-sniff-properties#disregard-class-file-name-rules
    -->
    <rule ref="WordPress.Files.FileName">
        <properties>
            <property name="strict_class_file_names" value="false" />
        </properties>
    </rule>

    <!--
        Hook Names

        While the WordPress Coding Standards state that hook names should be separated by
        underscores, an optionated approach used by plugins like Advanced Custom Fields is to use
        '/' to namespace hooks.

        @link https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/wiki/Customizable-sniff-properties#custom-word-delimiters-in-hook-names
    -->
    <rule ref="WordPress.NamingConventions.ValidHookName">
        <properties>
            <property name="additionalWordDelimiters" value="/"/>
        </properties>
    </rule>
</ruleset>

Add custom ruleset for PHP_CodeSniffer
Add custom ruleset for PHP_CodeSniffer
