[wp-trac] [WordPress Trac] #50442: Add prefixes to all admin notices (Warning, Error, Success, Info)

[WordPress Trac]

#50442: Add prefixes to all admin notices (Warning, Error, Success, Info)
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 Reporter:  kebbet          |       Owner:  joedolson
     Type:  enhancement     |      Status:  accepted
 Priority:  normal          |   Milestone:  6.5
Component:  Administration  |     Version:
 Severity:  normal          |  Resolution:
 Keywords:  needs-design    |     Focuses:  ui, accessibility, ui-copy
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Comment (by joedolson):

 Reading through the history of this issue, as reflected in #47656, I can
 see that there are a number of problems that should be taken into
 consideration. Design-wise, there's some back-compat issues with handling
 this outside of core, and a lot of text churn that could happen with
 changing all errors. In many cases, the context of an error or warning is
 fairly clear, but right now the distinction is only conveyed using color.
 Adding this as text is reasonable, but this might be a case where we can
 more easily handle this issue by adding an icon to indicate each state
 with accessible text.

 What this avoids is 1) the need to modify the text of existing notices. 2)
 Fixes the color-only indicator problem, by providing cues through color,
 icon, and text (for screen readers.) The gap is a lack of text indication
 for sighted users who don't immediately understand the icon, but this
 information is all enhancing comprehension; the color and icon should
 never be critical to the message. If we have a message in a notice that
 leaves ambiguity, then that message should be updated.

 I suggest using `dashicons-no` for errors, `dashicons-warning`, for
 warnings, `dashicons-info`, for info, and `dashicons-yes` for success.

 Open to arguments against this, however.

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Ticket URL: <https://core.trac.wordpress.org/ticket/50442#comment:9>
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