# usage: . tools/qa/log.sh; qa <command...>   – runs a command, appends command + rc to .qa/commands.log
qa() {
  local start rc
  start=$(date -Iseconds)
  "$@"; rc=$?
  mkdir -p "$(git rev-parse --show-toplevel)/.qa"
  printf '%s\trc=%s\t%s\n' "$start" "$rc" "$*" >> "$(git rev-parse --show-toplevel)/.qa/commands.log"
  return $rc
}