Change default branch to main

[Copilot]

Updates the default branch from master to main throughout the package for both the command behavior and scaffolded packages.

Command behavior:

• wp scaffold package-readme now defaults to --branch=main (previously master)
• Custom branch names remain supported via --branch parameter

Template changes:

• .travis.yml: Updates branches: only: to main
• composer.json: Changes branch alias from dev-master to dev-main

Documentation updates:

• Parameter docs, inline examples, and test expectations updated to reflect main as default

Example of generated README install command:

# Before
wp package install vendor/package:dev-master

# After
wp package install vendor/package:dev-main

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• api.wordpress.org
  • Triggering command: /usr/bin/curl curl -s REDACTED (dns block)
  • Triggering command: /usr/bin/curl curl -s REDACTED git old-�� --local credential.helper and/vendor/wp-cli/wp-cli-tests/bin/run-behat-tests (dns block)
• wp-cli.org
  • Triggering command: /usr/bin/php /usr/bin/php /home/REDACTED/work/scaffold-package-command/scaffold-package-command/vendor/wp-cli/wp-cli/bin/../php/boot-fs.php scaffold package wp-cli/default-readme d -n 10 (dns block)
  • Triggering command: /usr/bin/php /usr/bin/php /home/REDACTED/work/scaffold-package-command/scaffold-package-command/vendor/wp-cli/wp-cli/bin/../php/boot-fs.php scaffold package wp-cli/custom-branch (dns block)
  • Triggering command: /usr/bin/php /usr/bin/php /home/REDACTED/work/scaffold-package-command/scaffold-package-command/vendor/wp-cli/wp-cli/bin/../php/boot-fs.php scaffold package wp-cli/foo --dir=foo --require_wp_cli=>=0.24.0-alpha password=$GITHUB_TOKEN"; }; f (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Change default branch to main</issue_title>
<issue_description>The default branch used by the command as well as in scaffolded packages should be main.
</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Change default branch to main #266

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[github-actions]

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