Global styles revisions: revision comparisons

[ramonjd]

What problem does this address?

It's possible to use WordPress's existing revisions.php page to compare the global styles custom post, however it means comparing changes to JSON, which may not be accessible to everyone.

It would be more useful to have a visual tool, or initially, a text summary of changes, to differentiate global styles revisions.

Discussed in:

• Global Styles: Add link to compare revisions #52829 (comment)
• Global styles: add revisions UI #50089 (comment)

What is your proposed solution?

Ideally we'd have a visual representation of changes between two revisions. @jameskoster has been thinking about this:

• Global Styles: Add link to compare revisions #52829 (comment)
• Global styles: add revisions UI #50089 (comment)

As mentioned previously, it is possible to load two versions in two iframes:

2023-05-01.16.16.51.mp4

@c4rl0sbr4v0 has also explored a comparison engine to diff two theme.json trees: tenberg/pull/52829#issuecomment-1659027089

We probably need to undertake more investigation in order to balance performance and utility.

As a starting taster will might like to display top-level changes to the user, e.g.,

[jameskoster]

@ramonjd would you say this is duplicative of #53484? (Feel free to edit that issue to add more flavour).

[ramonjd]

would you say this is duplicative of #53484? (Feel free to edit that issue to add more flavour).

Definitely! I'll move some of the info over to that one. Thanks for the heads up.

[ramonjd]

Closing in favour of #53484