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| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version

## ef-width

Arguments: external-format

This function returns the number of octets it takes to build a character in the argument external-format. It may have an integer value or the value `character`. The width slot of an external format is used to optimize listen techniques in a stream; by default listen requires at least ef-width octets to be available before returning true. Normally this means having to go through the process of building a character, but in simple formats, like latin1, availability of a single octet can allow a true return from listen.

See def-external-format. See iacl.htm for more information on international character support in Allegro CL.

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This page was not revised from the 8.2 page.
Created 2012.5.30.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version