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2.1.4 Normalization

Unicode allows more than one way of encoding the same character. The string “é”, for
example, can be encoded as the single Unicode character \u00E9 or as a regular ASCII
e followed by the acute accent combining mark \u0301. These two encodings may look
exactly the same when displayed by a text editor, but they have different binary en-
codings and are considered different by the computer. The Unicode standard defines

the preferred encoding for all characters and specifies a normalization procedure to

convert text to a canonical form suitable for comparisons. JavaScript assumes that the
source code it is interpreting has already been normalized and makes no attempt to
normalize identifiers, strings, or regular expressions itself.

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