Gantt diagram states that is supports quarter in date format while it does not

[lexa-diky]

Description

In Gantt diagram documentation it states that Quarter dates are supported, while it is not. Day.js also has no mentioning of quarter support in the linked documentation https://day.js.org/docs/en/parse/string-format/

Steps to reproduce

1. Use code in Code Sample section
2. Q formatted numbers are formatted as month

Screenshots

Code Sample

gantt
    title my-project
    dateFormat YYYY-Q
    axisFormat %Y %b
    section Section
        A task : 2023-4, 2024-1

Setup

• Mermaid version: 10.7.0
• Browser and Version: Safari

Suggested Solutions

• remove line about Q support from documentation
• implement Q support

Additional Context

No response

[OldhamMade]

Upvote for option 2: to implement Q support.

[Amit0617]

You are using it wrong. Use it like 2020-Q1 for first quarter of 2020.
Read the docs http://mermaid.js.org/syntax/gantt.html#output-date-format-on-the-axis

[mmyrte]

@Amit0617 You're referring to the output, whereas we want the input to be parsed as quarters.

[maehr]

gantt
    dateFormat YY-Q
    axisFormat %Y %b

    section WP-1
    T1         :t1, 25-3, 25-4
    T2         :t2, after t1, 26-3

This worked for me