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

stream-line-column

Arguments: stream

This function returns the column number where the next character will be written, or nil if that is not meaningful for stream. The first column on a line is numbered 0. This function is used in the implementation of the pretty printer and the format ~T directive. For every character output stream class that is defined, a method must be defined for this function, although it is permissible for it to always return nil.

Beginning with version 6.1, simple-streams now implement stream-line-column as a part of the standard interface, rather than as a simple call to charpos when the :gray-compat module is loaded. For simple-streams, stream-line-column is setfable. See the discussion of charpos and stream-line-column in Details of stream-line-column and charpos in streams.htm.

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


Copyright (c) 1998-2012, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 9.0. This page was not revised from the 8.2 page.
Created 2012.5.30.

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