Trying to reproduce a HTTP 400 on datacite api v2 using cursor.

cursor400.sh

#!/bin/bash

# To reproduce, run script and wait a bit, until it stop; last line should be a
# (22) from curl.
#
# $ bash cursor400.sh
# ...
# curl: (22) The requested URL returned error: 400

set -eu -o pipefail

CURSOR=1

while true; do
	echo $CURSOR
	CURSOR=$(curl --fail -v "https://api.datacite.org/dois?page%5Bsize%5D=50&page%5Bcursor%5D=$CURSOR&query=updated%3A%5B2019-11-20T00%3A00%3A00.000Z+TO+2019-11-20T23%3A59%3A59.000Z%5D" |
		jq -r .links.next | grep -Eo '[a-zA-Z0-9_-]{36,}')
done