std: Change escape_unicode to use new escapes #19885
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This changes the `escape_unicode` method on a `char` to use the new style of unicode escapes in the language. Closes rust-lang#19811 Closes rust-lang#19879
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std: Change escape_unicode to use new escapes Reviewed-by: brson
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Using a type alias for iterator implementations is fragile since this exposes the implementation to users of the iterator, and any changes could break existing code. This commit changes the iterators of `VecMap` to use proper new types, rather than type aliases. However, since it is fair-game to treat a type-alias as the aliased type, this is a: [breaking-change].
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This changes the `escape_unicode` method on a `char` to use the new style of unicode escapes in the language. Closes rust-lang#19811 Closes rust-lang#19879
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This changes the
escape_unicodemethod on acharto use the new style ofunicode escapes in the language.
Closes #19811
Closes #19879