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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## charpos

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) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version