dotCooCoo db97cc1a8f JavaScript: a bare E4X name inside with or a filter can be assigned ...

With Options::e4x set, an E4X name standing alone (@a, @ns::a, @[expr],
ns::a, *) is now a valid target for =, compound assignment, ++, --,
delete and for/for each loops, as well as a read. The target is the
nearest XML or XMLList value in scope whose [[HasProperty]] accepts the
name (ECMA-357 section 11.1). The name is evaluated once, and the
target resolves before the right-hand side runs.

When no XML value in scope holds the name, a read or write throws a
ReferenceError and creates no child or attribute. A read no longer
falls back to the first XML value in scope, so a filter such as
list.(@id == '1') throws when an item has no @id and no outer XML
value holds one, instead of treating that item as not matching.

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..

src

JavaScript: a bare E4X name inside with or a filter can be assigned

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tests

Tests: test262 skips a test only when its code uses a missing built-in

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Cargo.toml

JavaScript: characters assigned in Unicode 17 are identifier characters

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