merge-on-green.sh

#!/bin/sh

# Polling the status checks for a PR and merges it when they are green.
# Needs to be executed in the directory of the PR's repo.
#
# Args: merge-on-green <PR>
# 	where PR is the number of the PR without "#"
#

PR_NO=$1

while true; do
  HEAD_COMMIT=`hub pr show -f "%sH" $PR_NO`
  hub ci-status ${HEAD_COMMIT} > /dev/null && hub api -F merge_method=squash -X PUT repos/{owner}/{repo}/pulls/${PR_NO}/merge && exit 0
  sleep 30
done