| 123456789101112131415161718192021 | #!/bin/bashverify_index() {    modules=$(grep "celery." "$1" | \                perl -ple's/^\s*|\s*$//g;s{\.}{/}g;')    retval=0    for module in $modules; do        if [ ! -f "$module.py" ]; then            if [ ! -f "$module/__init__.py" ]; then                echo "Outdated reference: $module"                retval=1            fi        fi    done    return $retval}verify_index docs/reference/index.rst && \    verify_index docs/internals/reference/index.rst
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