bin/brew: don't filter GitHub Actions variables.

.github/workflows/doctor.yml

@@ -10,7 +10,6 @@ on:
       - Library/Homebrew/os/mac/xcode.rb
 env:
   HOMEBREW_DEVELOPER: 1
-  HOMEBREW_GITHUB_ACTIONS: 1
   HOMEBREW_NO_AUTO_UPDATE: 1
 jobs:
   tests:

.github/workflows/tests.yml

@@ -5,7 +5,6 @@ on:
   pull_request: []
 env:
   HOMEBREW_DEVELOPER: 1
-  HOMEBREW_GITHUB_ACTIONS: 1
   HOMEBREW_NO_AUTO_UPDATE: 1
 jobs:
   tests:
@@ -73,11 +72,6 @@ jobs:
             sudo chmod -R g-w,o-w /home/linuxbrew/.linuxbrew/Homebrew
         fi
 
-        # set variables for coverage reporting
-        export HOMEBREW_CI_BUILD_NUMBER="$GITHUB_REF"
-        export HOMEBREW_CI_BRANCH="$HEAD_GITHUB_REF"
-        export HOMEBREW_GITHUB_REPOSITORY="$GITHUB_REPOSITORY"
-
         # don't bother running all tests on both platforms (for speed)
         if [ "$RUNNER_OS" = "Linux" ]; then
           brew tests --no-compat --online

Library/Homebrew/diagnostic.rb

@@ -907,7 +907,7 @@ module Homebrew
 
       def check_cask_staging_location
         # Skip this check when running CI since the staging path is not writable for security reasons
-        return if ENV["HOMEBREW_GITHUB_ACTIONS"]
+        return if ENV["GITHUB_ACTIONS"]
 
         path = Cask::Caskroom.path
 

Library/Homebrew/extend/os/mac/diagnostic.rb

@@ -73,7 +73,7 @@ module Homebrew
         # `brew test-bot` runs `brew doctor` in the CI for the Homebrew/brew
         # repository. This only needs to support whatever CI providers
         # Homebrew/brew is currently using.
-        return if ENV["HOMEBREW_GITHUB_ACTIONS"]
+        return if ENV["GITHUB_ACTIONS"]
 
         message = <<~EOS
           Your Xcode (#{MacOS::Xcode.version}) is outdated.
@@ -100,7 +100,7 @@ module Homebrew
         # `brew test-bot` runs `brew doctor` in the CI for the Homebrew/brew
         # repository. This only needs to support whatever CI providers
         # Homebrew/brew is currently using.
-        return if ENV["HOMEBREW_GITHUB_ACTIONS"]
+        return if ENV["GITHUB_ACTIONS"]
 
         <<~EOS
           A newer Command Line Tools release is available.

bin/brew

@@ -86,8 +86,7 @@ then
   export CI="1"
 fi
 
-# test-bot does environment filtering itself
-if [[ -z "$HOMEBREW_NO_ENV_FILTERING" && "$1" != "test-bot" ]]
+if [[ -z "$HOMEBREW_NO_ENV_FILTERING" ]]
 then
   PATH="/usr/bin:/bin:/usr/sbin:/sbin"
 
@@ -95,6 +94,7 @@ then
   # Filter all but the specific variables.
   for VAR in HOME SHELL PATH TERM TERMINFO COLUMNS DISPLAY LOGNAME USER CI SSH_AUTH_SOCK SUDO_ASKPASS \
              http_proxy https_proxy ftp_proxy no_proxy all_proxy HTTPS_PROXY FTP_PROXY ALL_PROXY \
+             GITHUB_ACTIONS GITHUB_REPOSITORY GITHUB_RUN_ID GITHUB_SHA GITHUB_HEAD_REF GITHUB_BASE_REF GITHUB_REF \
              "${!HOMEBREW_@}"
   do
     # Skip if variable value is empty.