stream-unread-char

Arguments: stream character

Undoes the last call to stream-read-char, as in unread-char. Returns nil. Every subclass of fundamental-character-input-stream must define a method for this function. As with unread-char, only one character may be returned to the builtin stream classes.

See also streams.htm for general information on streams in Allegro CL.

Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.