Arguments: stream
This function checks stream, which must be either
a character stream or a simple-stream, for the unicode byte-order
marker and returns two values. The first returned value is either the
:unicode external-format (if the unicode byte-order
marker is found) or the stream's current external-format (if the
unicode byte-order marker is not found).
The second returned value is a boolean indicating whether the first returned value is the stream's current external-format (which it always is when the unicode byte-order marker is not found and may or may not be when the unicode byte-order marker is found).
This function operates by using peek-char on the stream. The file-position for the stream remains unchanged after calling sniff-for-unicode.
See The unicode and fat External-Format Types in iacl.htm for information on the unicode external format and iacl.htm in general for information on international character support in Allegro CL.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.