No default dateFormat for Gantt

[mrjoel]

Description

The Gantt chart diagram type documentation claims that "The default input date format is YYYY-MM-DD."

However in actuality, an explicit dateFormay YYYY-MM-DD must be given for such dates to be recognized.

Steps to reproduce

Use starting diagram below, observe that the absolute task is not displayed with any task bar. Then uncomment the dateFormat line and observe that it is rendered as expected.

gantt
  %%dateFormat YYYY-MM-DD
  duration task : 2024-01-01, 31d
  absolute task : 2024-01-01, 2024-02-01

Screenshots

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Code Sample

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Setup

• Mermaid version: 10.9.1

Suggested Solutions

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Additional Context

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