| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: &optional output-stream
For a Gray stream, charpos calls stream-line-column.
Otherwise:
The output line-character-position may be tracked on a
per-character basis, or it may be calculated when needed. If for any
reason the charpos cannot be determined it is deemed to be
nil
.
If the stream tracks charpos, the current value is returned as the result of this function. Otherwise, the calculation is performed and the result returned.
See Details of stream-line-column and charpos in streams.htm. See streams.htm for information on the simple-streams implementation in Allegro CL. The older but still supported Gray streams implementation is described in gray-streams.htm.
Copyright (c) 1998-2012, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 8.2. This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |