DateTimeFormatter.ofPattern not working as expected with "zone-offset"

[gillstrom]

Hi!
I'm not sure if this is a bug or if I misunderstand something here.

If I create a pattern with "zone-offset" using X and try to parse a string with +02:00, +02:30, etc. it throws a JsJodaException. Removing just the :XY part of the string I'm trying to parse make it work again.

Is this intended?

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Example using @js-joda/core@5.5.3:

import {DateTimeFormatter, ZonedDateTime} from "@js-joda/core";

const SOME_PATTERN = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss[.SSS][X]");

const working = ZonedDateTime.parse("2023-06-01T11:20:47.106+02", SOME_PATTERN);
// => ZonedDateTime {_dateTime: LocalDateTime {_date: LocalDate {_year: 2023, _month: 6, _day: 1}, …}, …}

const throwing = ZonedDateTime.parse("2023-06-01T11:20:47.106+02:00", SOME_PATTERN);
// => JsJodaException: Text '2023-06-01T11:20:47.106+02:00' could not be parsed, unparsed text found at index 26: 2023-06-01T11:20:47.106+02:00, at index: 26

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[gillstrom]

Should still be a problem.

[pithu]

Sounds like a bug from the upstream project to me

[pithu]

However, with pattern with three X eg DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss[.SSS][XXX]") you can parse an offset with minutes.