[wp-trac] [WordPress Trac] #48574: Create better post diff screens

[WordPress Trac]

#48574: Create better post diff screens
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 Reporter:  seanleavey   |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Revisions    |    Version:  trunk
 Severity:  normal       |   Keywords:
  Focuses:               |
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 Post diffs showing the difference between post revisions have always been
 in raw form, showing differences in post HTML and not ''visual''
 differences. With the addition of the Gutenberg editor to WordPress, there
 is now even more HTML shown due to the inclusion of block settings as
 comments. Additionally, Gutenberg blocks such as figures or lists create
 one-line HTML strings so small changes to list items result in one huge
 line change on the diff screen. It seems like now is the time to consider
 improving the post diff screen, and changing the way Gutenberg blocks
 generate their HTML to allow for cleaner diffs.

 See the attached image for an example of a block that could have been
 generated across multiple lines such that the addition of a link didn't
 generate 12 lines of diff.

 I suppose this feature request is twofold:

  - Improve the diff page UI to show visual diffs (but keep the current
 "raw" mode as an option).
  - Make sure Gutenberg block HTML is cleanly formatted across multiple
 lines to improve line-based diffs used on the post diff screen.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48574>
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