local contrib_coauthor_email="${COAUTHOR_EMAIL:-}"

if [ -z "$contrib_coauthor_email" ] || [ "$contrib_coauthor_email" = "null" ]; then

local contrib_id

contrib_id=$(gh api "users/$contrib" --jq .id)

contrib_coauthor_email="${contrib_id}+${contrib}@users.noreply.github.com"

if contrib_coauthor_email=$(resolve_contributor_coauthor_email "$contrib"); then

:

else

contrib_coauthor_email=""

fi

fi

local reviewer_email_candidates=()

local reviewer_email="${reviewer_email_candidates[0]}"

local reviewer_coauthor_email="${reviewer_id}+${reviewer}@users.noreply.github.com"

cat > .local/merge-body.txt <<EOF_BODY

Merged via squash.

Prepared head SHA: $PREP_HEAD_SHA

Co-authored-by: $contrib <$contrib_coauthor_email>

Co-authored-by: $reviewer <$reviewer_coauthor_email>

Reviewed-by: @$reviewer

EOF_BODY

{

echo "Merged via squash."

echo

echo "Prepared head SHA: $PREP_HEAD_SHA"

if [ -n "$contrib_coauthor_email" ]; then

echo "Co-authored-by: $contrib <$contrib_coauthor_email>"

fi

echo "Co-authored-by: $reviewer <$reviewer_coauthor_email>"

echo "Reviewed-by: @$reviewer"

} > .local/merge-body.txt

delete_remote_pr_head_branch_after_merge() {

local head_json

local commit_body

commit_body=$(gh api repos/:owner/:repo/commits/"$merge_sha" --jq .commit.message)

printf '%s\n' "$commit_body" | rg -q "^Co-authored-by: $contrib <" || { echo "Missing PR author co-author trailer"; exit 1; }

if [ -n "$contrib_coauthor_email" ]; then

printf '%s\n' "$commit_body" | rg -q "^Co-authored-by: $contrib <" || { echo "Missing PR author co-author trailer"; exit 1; }

else

echo "Skipping PR author co-author trailer check for bot/app author $contrib."

fi

printf '%s\n' "$commit_body" | rg -q "^Co-authored-by: $reviewer <" || { echo "Missing reviewer co-author trailer"; exit 1; }

local ok=0

local comment_output=""

local attempt

for attempt in 1 2 3; do

if comment_output=$(gh pr comment "$pr" -F - 2>&1 <<EOF_COMMENT

Merged via squash.

- Prepared head SHA: [$PREP_HEAD_SHA]($prep_sha_url)

- Merge commit: [$merge_sha]($merge_sha_url)

Thanks @$contrib!

EOF_COMMENT

); then

if comment_output=$(

{

echo "Merged via squash."

echo

echo "- Prepared head SHA: [$PREP_HEAD_SHA]($prep_sha_url)"

echo "- Merge commit: [$merge_sha]($merge_sha_url)"

if pr_contributor_allows_human_trailers "$contrib"; then

echo

echo "Thanks @$contrib!"

fi

} | gh pr comment "$pr" -F - 2>&1

); then

ok=1

break

fi