3.1 Characters

3.1.3 New character operations

The following constructs have been added to support coded character sets:

char-external-code
find-external-char
char-external-code-limit

The function char-external-code returns a non-negative integer that is the index of the specified character within the specified character set.

The function char-external-code-limit returns the upper exclusive bound of the value ofchar-external-code for the specified character set.

The function find-external-char returns a character object that is the character encoded at the specified character index within the specified character set.

These functions allow you to determine the external code of a character, which might differ from Lisp's internal encoding of the character.


International Character Sets - 9 SEP 1996

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