From 4bb66c12e8afa79d838fd9f0b4c86021050c33eb Mon Sep 17 00:00:00 2001
From: Jonathan Chang <jchang641@gmail.com>
Date: Sun, 22 Mar 2020 13:12:06 +1100
Subject: [PATCH 1/3] utils/github: add repository_dispatch API

---
 Library/Homebrew/utils/github.rb | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Library/Homebrew/utils/github.rb b/Library/Homebrew/utils/github.rb
index 4e0e42e9eb..7c3b36d284 100644
--- a/Library/Homebrew/utils/github.rb
+++ b/Library/Homebrew/utils/github.rb
@@ -431,6 +431,13 @@ module GitHub
     comments.any? { |comment| comment["body"].eql?(body) }
   end
 
+  def dispatch(user, repo, event, **payload)
+    url = "#{API_URL}/repos/#{user}/#{repo}/dispatches"
+    open_api(url, data:           { event_type: event, client_payload: payload },
+                  request_method: :POST,
+                  scopes:         CREATE_ISSUE_FORK_OR_PR_SCOPES)
+  end
+
   def api_errors
     [GitHub::AuthenticationFailedError, GitHub::HTTPNotFoundError,
      GitHub::RateLimitExceededError, GitHub::Error, JSON::ParserError].freeze

From 86f245effb8746edae1655ece5038bd8cfaaf908 Mon Sep 17 00:00:00 2001
From: Jonathan Chang <jchang641@gmail.com>
Date: Sun, 22 Mar 2020 13:12:48 +1100
Subject: [PATCH 2/3] dev-cmd: new pr-publish command

---
 Library/Homebrew/dev-cmd/pr-publish.rb        | 36 +++++++++++++++++++
 .../Homebrew/test/dev-cmd/pr-publish_spec.rb  |  7 ++++
 2 files changed, 43 insertions(+)
 create mode 100644 Library/Homebrew/dev-cmd/pr-publish.rb
 create mode 100644 Library/Homebrew/test/dev-cmd/pr-publish_spec.rb

diff --git a/Library/Homebrew/dev-cmd/pr-publish.rb b/Library/Homebrew/dev-cmd/pr-publish.rb
new file mode 100644
index 0000000000..c2a81d9e9e
--- /dev/null
+++ b/Library/Homebrew/dev-cmd/pr-publish.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require "cli/parser"
+require "utils/github"
+
+module Homebrew
+  module_function
+
+  def pr_publish_args
+    Homebrew::CLI::Parser.new do
+      usage_banner <<~EOS
+        `pr-publish` <pull_request>
+
+        Publishes bottles for a pull request with GitHub Actions.
+        Requires write access to the repository.
+      EOS
+      switch :verbose
+    end
+  end
+
+  def pr_publish
+    pr_publish_args.parse
+
+    odie "You need to specify a pull request number!" if Homebrew.args.named.empty?
+
+    args.named.each do |arg|
+      arg = "#{CoreTap.instance.default_remote}/pull/#{arg}" if arg.to_i.positive?
+      url_match = arg.match HOMEBREW_PULL_OR_COMMIT_URL_REGEX
+      _, user, repo, issue = *url_match
+      tap = Tap.fetch(user, repo) if repo.match?(HOMEBREW_OFFICIAL_REPO_PREFIXES_REGEX)
+      odie "Not a GitHub pull request: #{arg}" unless issue
+      ohai "Dispatching #{tap} pull request ##{issue}"
+      GitHub.dispatch(user, repo, "Publish ##{issue}", pull_request: issue)
+    end
+  end
+end
diff --git a/Library/Homebrew/test/dev-cmd/pr-publish_spec.rb b/Library/Homebrew/test/dev-cmd/pr-publish_spec.rb
new file mode 100644
index 0000000000..f0b8e25cd6
--- /dev/null
+++ b/Library/Homebrew/test/dev-cmd/pr-publish_spec.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require "cmd/shared_examples/args_parse"
+
+describe "Homebrew.pr_publish_args" do
+  it_behaves_like "parseable arguments"
+end

From e08ffb351525087f2d1e34e848785927c75fc344 Mon Sep 17 00:00:00 2001
From: Jonathan Chang <jchang641@gmail.com>
Date: Sun, 22 Mar 2020 13:34:48 +1100
Subject: [PATCH 3/3] manpages: update for brew pr-publish

---
 docs/Manpage.md | 5 +++++
 manpages/brew.1 | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/docs/Manpage.md b/docs/Manpage.md
index 8d41ee6b33..4c7c6f89b3 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -880,6 +880,11 @@ Generate Homebrew's manpages.
 * `--link`:
   This is now done automatically by `brew update`.
 
+### `pr-publish` *`pull_request`*
+
+Publishes bottles for a pull request with GitHub Actions. Requires write access
+to the repository.
+
 ### `prof` *`command`*
 
 Run Homebrew with the Ruby profiler, e.g. `brew prof readall`.
diff --git a/manpages/brew.1 b/manpages/brew.1
index bfd405ff00..f286c8d09d 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -1120,6 +1120,9 @@ Return a failing status code if changes are detected in the manpage outputs\. Th
 \fB\-\-link\fR
 This is now done automatically by \fBbrew update\fR\.
 .
+.SS "\fBpr\-publish\fR \fIpull_request\fR"
+Publishes bottles for a pull request with GitHub Actions\. Requires write access to the repository\.
+.
 .SS "\fBprof\fR \fIcommand\fR"
 Run Homebrew with the Ruby profiler, e\.g\. \fBbrew prof readall\fR\.
 .