#!/usr/bin/env bash set -euo pipefail changed_paths_file="${1:-}" if [[ -z "$changed_paths_file" || ! -f "$changed_paths_file" ]]; then  printf 'Usage: %s <changed-paths-file>\n' "$(basename "$0")" >&2  exit 2fi macos_tests=falsepath_count=0 classify_path() {  local path="$1"  [[ -z "$path" ]] && return   path_count=$((path_count + 1))   case "$path" in    AGENTS.md|docs/configuration.md)      macos_tests=true      ;;    *.md)      ;;    *)      macos_tests=true      ;;  esac} invalid_row=falsewhile IFS=$'\t' read -r status first_path second_path extra_path \  || [[ -n "${status:-}${first_path:-}${second_path:-}${extra_path:-}" ]]do  [[ -z "${status}${first_path:-}${second_path:-}${extra_path:-}" ]] && continue   case "$status" in    R*|C*)      if ! [[ "$status" =~ ^[RC][0-9]{1,3}$ ]] \        || ((10#${status:1} > 100)) \        || [[ -z "${first_path:-}" || -z "${second_path:-}" || -n "${extra_path:-}" ]]      then        invalid_row=true        break      fi      classify_path "$first_path"      classify_path "$second_path"      ;;    A|D|M|T|U|X|B)      if [[ -z "${first_path:-}" || -n "${second_path:-}" || -n "${extra_path:-}" ]]; then        invalid_row=true        break      fi      classify_path "$first_path"      ;;    *)      invalid_row=true      break      ;;  esacdone < "$changed_paths_file" if [[ "$invalid_row" == true ]]; then  printf 'Invalid git name-status row; refusing to skip macOS tests.\n' >&2  exit 2fi if [[ "$path_count" -eq 0 ]]; then  macos_tests=truefi if [[ -n "${GITHUB_OUTPUT:-}" ]]; then  printf 'macos-tests=%s\n' "$macos_tests" >> "$GITHUB_OUTPUT"fi if [[ "$macos_tests" == true ]]; then  printf 'macOS Swift tests required for this change set.\n'else  printf 'Skipping macOS Swift tests for docs/Markdown-only changes.\n'fi