sibling selectors involving `{#key ...}`/`{@render ...}` are incorrectly marked as unused

[Rich-Harris]

Describe the bug

Because of this line...

svelte/packages/svelte/src/compiler/phases/2-analyze/css/css-prune.js

Line 955 in dd9abea

} else if (prev.type === 'EachBlock' || prev.type === 'IfBlock' || prev.type === 'AwaitBlock') {

...and this line...

svelte/packages/svelte/src/compiler/phases/2-analyze/css/css-prune.js

Line 955 in dd9abea

} else if (prev.type === 'EachBlock' || prev.type === 'IfBlock' || prev.type === 'AwaitBlock') {

...we incorrectly prune sibling selectors when things other than if/each/await blocks are involved. Discovered while working on #14395

Reproduction

• key blocks now fixed
• render tags

Logs

No response

System Info

latest

Severity

annoyance

[Rich-Harris]

here's another case that fails

[Rich-Harris]

and another

[Rich-Harris]

yet another

[Rich-Harris]

and another

[Rich-Harris]

and another

[harrisi]

and another

Sorry, what's wrong with this one? I don't see why the child component would be green.