fixup

Library/Homebrew/brew.sh

@@ -76,7 +76,11 @@ export GEM_OLD_PATH="$GEM_PATH"
 # Users may have these set, pointing the system Ruby
 # at non-system gem paths
 unset GEM_HOME
-unset GEM_PATH
+
+if [[ -z "$HOMEBREW_WHICH_RUBY" ]]
+then
+  unset GEM_PATH
+fi
 
 # Users may have this set, injecting arbitrary environment changes into
 # bash processes inside builds
@@ -267,6 +271,12 @@ access to all bottles."
 EOS
 fi
 
+if [[ -z "$HOMEBREW_ENV_PRUNED" ]]
+then
+  source "$HOMEBREW_LIBRARY/Homebrew/utils/shell_env.sh"
+  prune-shell-env
+fi
+
 # Hide shellcheck complaint:
 # shellcheck source=/dev/null
 source "$HOMEBREW_LIBRARY/Homebrew/utils/analytics.sh"
@@ -337,6 +347,11 @@ else
   source "$HOMEBREW_LIBRARY/Homebrew/utils/ruby.sh"
   setup-ruby-path
   
+  if [[ -n "$HOMEBREW_WHICH_RUBY" ]]
+  then
+    export HOMEBREW_RUBY_PATH="$(which ruby)"
+  fi
+  
   # Unshift command back into argument list (unless argument list was empty).
   [[ "$HOMEBREW_ARG_COUNT" -gt 0 ]] && set -- "$HOMEBREW_COMMAND" "$@"
   { update-preinstall; exec "$HOMEBREW_RUBY_PATH" -W0 "$HOMEBREW_LIBRARY/Homebrew/brew.rb" "$@"; }

bin/brew

@@ -113,13 +113,9 @@ export PATH=/usr/bin:/bin:/usr/sbin:/sbin
 
 if [[ -n "$HOMEBREW_ENV_FILTERING" ]]
 then
-  echo "----- HOMEBREW_ENV_FILTERING set -----"
-
   # Needed TERM to prevent "tput: No value for $TERM and no -T specified"
   env | grep -E '^(HOMEBREW.*|HOME|PATH|TERM)=.*$' > /tmp/homebrew-env
   env -i "$HOMEBREW_LIBRARY/Homebrew/utils/shell_env.sh" "$@"
 else
-  echo "----- HOMEBREW_ENV_FILTERING NOT set! -----"
-
   source "$HOMEBREW_LIBRARY/Homebrew/brew.sh"
 fi