[wp-trac] [WordPress Trac] #47018: No error message provided upon incomplete input in Tags Administration Screen

[WordPress Trac]

#47018: No error message provided upon incomplete input in Tags Administration
Screen
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 Reporter:  conner_bw                |       Owner:  (none)
     Type:  enhancement              |      Status:  new
 Priority:  normal                   |   Milestone:  6.0
Component:  Taxonomy                 |     Version:  5.1.1
 Severity:  normal                   |  Resolution:
 Keywords:  has-screenshots input-   |     Focuses:  ui, accessibility,
  validation has-patch               |  javascript, administration
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Changes (by afercia):

 * keywords:  has-screenshots input-validation => has-screenshots input-
     validation has-patch
 * focuses:  ui, accessibility, administration => ui, accessibility,
     javascript, administration
 * milestone:  Future Release => 6.0


Comment:

 [attachment:"47018.diff"]

 - Allows the add tag Ajax request to run also when the form is submitted
 with the Name field left empty.
 - This way, the response is now able to return error messages.
 - Note that this will trigger an Ajax call every time the form is
 submitted with the 'Name' field empty.

 Additionally:
 - Updates the CSS classes of the notices: 'error' and 'updated' are legacy
 and shouldn't be used any longer.
 - Adds audible messages for 3 more cases so that they're now announced by
 screen readers:
   - No permissions error: 'Sorry, you are not allowed to do that.'
   - Broken error: 'Something went wrong.'
   - When the response returns an error with a custom message.
 - Updates the styling of the error red 'border', ot make it more
 consistent with the 'border' used for the focus style.
 - Adds `wp-a11y` as dependency for the `wp-ajax-response` script.

 See attached screenshot for the error message and the new red border
 style.

 Moving to 6.0 consideration.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47018#comment:13>
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