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#!/bin/sh
# SPDX-License-Identifier: LGPL-2.1-or-later

set -e

if [ -z "$1" ]; then
    echo "Use: $0 page-name (with no section suffix)"
    exit 1
fi

# make sure the rules have been regenerated (in case update-man-rules was just run)
ninja -C "@BUILD_ROOT@" version.h

page="$(echo "$1" | sed 's/\./\\./')"
target=$(ninja -C "@BUILD_ROOT@" -t query man/man | grep -E -m1 "man/$page\.[0-9]$" | awk '{print $2}')
if [ -z "$target" ]; then
    echo "Cannot find page $1"
    exit 1
fi
ninja -C "@BUILD_ROOT@" "$target"

fullname="@BUILD_ROOT@/$target"
redirect="$(sed -n -r '1 s|^\.so man[0-9]/(.*)|\1|p' "$fullname")"
if [ -n "$redirect" ]; then
    ninja -C "@BUILD_ROOT@" "man/$redirect"

    fullname="@BUILD_ROOT@/man/$redirect"
fi

exec man "$fullname"