[wp-trac] [WordPress Trac] #62763: get_calendar(): IDs may be duplicated

[WordPress Trac]

#62763: get_calendar(): IDs may be duplicated
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 Reporter:  wildworks     |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 I discovered this while looking into the following Gutenberg issue:
 https://github.com/WordPress/gutenberg/issues/68451

 The `get_calendar()` function applies the following two IDs to the
 generated HTML:

 - table element: `wp-calendar`
 - Today's date cell: `today`

 These IDs cannot be changed, so the IDs will be duplicated if multiple
 calendars are output.

 Using the `wp_unique_id()` function will help us avoid duplicate IDs, but
 there are themes or plugins that rely on existing IDs, so we may need to
 use a different approach.

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Ticket URL: <https://core.trac.wordpress.org/ticket/62763>
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