zulip/tools/cache-zulip-git-version

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#!/usr/bin/env bash
set -eu
cd "$(dirname "$0")/.."
remote="$(git config zulip.zulipRemote)" || remote=upstream
{
git describe --always --tags --match='[0-9]*'
branches="$(git for-each-ref --format='%(objectname)' "refs/remotes/$remote/main" "refs/remotes/$remote/*.x")"
mapfile -t branches <<<"$branches"
if merge_base="$(git merge-base -- HEAD "${branches[@]}")"; then
git describe --always --tags --match='[0-9]*' -- "$merge_base"
fi
} >zulip-git-version