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Fix content loss for group block #30460

Merged
merged 2 commits into from
Apr 1, 2021
Merged

Fix content loss for group block #30460

merged 2 commits into from
Apr 1, 2021

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youknowriad
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@youknowriad youknowriad commented Apr 1, 2021

closes #30461

In #30443 (comment) it was reported that in Gutenberg 10.3, potential content loss can happen in some situations when using the group block with a lot of nesting.

This PR is an attempt to solve that

@youknowriad youknowriad added [Type] Bug An existing feature does not function as intended [Block] Group Affects the Group Block labels Apr 1, 2021
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Size Change: 0 B

Total Size: 1.42 MB

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@jeremyfelt
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jeremyfelt commented Apr 1, 2021

Tagging #30461 as a (possibly) more complete issue description. Happy to test once this is ready!

@youknowriad youknowriad force-pushed the fix/group-layout-regex branch from f405050 to 69bfcee Compare April 1, 2021 18:54
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Ok this looks to be working for me. @jeremyfelt mind testing a bit? thanks

@youknowriad youknowriad marked this pull request as ready for review April 1, 2021 18:54
@youknowriad youknowriad added this to the Gutenberg 10.3 milestone Apr 1, 2021
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Things are looking good for me. My original content is back in order and I've attempted to break things by nesting even more groups. All of the groups appear to have their inner container inserted when output and none are missing.

I am not a regex expert, so I'll leave that review to others. :)

Thanks for the quick fix, @youknowriad!

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All the merit goes to @ockham on this one

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ockham commented Apr 1, 2021

Thanks for testing, folks!

It might be a bit safer to add back the m modifier and use them both (i.e. ms, as mentioned here), since the m apparently changes the meaning of a few of the other RegEx characters we're using (e.g. ^ and $). In practice -- and given that y'all have tested this PR to work as-is -- it shouldn't make much of a difference; but it might be a bit safer.

The s OTOH apparently really only changes the meaning of the . to include newlines, and the RegEx in question only contains one ., so adding the s modifier is a fairly contained (and thus, hopefully safe) change.

I'll add back the m and will merge soon after. If either of you @youknowriad @jeremyfelt is still around, it'd be great if you could it another quick round of testing.

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@ockham The latest change is working for me in production (where I've sadly let PHP 7.0 be 🤦🏻). I've switched my local environment back to PHP 7.4, so I can't test more thoroughly right now, but things generally look good!

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Okay, I think we're good to go here. We have confirmation that content is no longer broken by this; have repro'd in simplified test cases; and the changes make sense overall.

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ockham commented Apr 1, 2021

e2e Test Admin - 4 is failing because of an unrelated npm hiccup:

npm ERR! Error while executing:
npm ERR! /usr/bin/git ls-remote -h -t https://github.com/wordpress-mobile/react-native-get-random-values.git
npm ERR! 
npm ERR! error: RPC failed; curl 16 Error in the HTTP2 framing layer
npm ERR! fatal: expected flush after ref listing

I'll go ahead and merge.

@ockham ockham merged commit 7473b53 into trunk Apr 1, 2021
@ockham ockham deleted the fix/group-layout-regex branch April 1, 2021 20:50
ockham added a commit that referenced this pull request Apr 1, 2021
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ockham commented Apr 1, 2021

Cherry-picked to release/10.3.

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[Block] Group Affects the Group Block [Type] Bug An existing feature does not function as intended
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Content may be removed on front-end during group inner container restoration on some PHP versions
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