[lex.name] (original) (raw)

On systems in which linkers cannot accept extended characters, an encoding of the universal-character-name can be used in forming valid external identifiers.

For example, some otherwise unused character or sequence of characters can be used to encode the\u in a universal-character-name.

Extended characters can produce a long external identifier, but C++ does not place a translation limit on significant characters for external identifiers.

In C++, upper- and lower-case letters are considered different for all identifiers, including external identifiers.

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