make-buffer-output-stream

Arguments: buffer &optional external-format

Returns a buffer-output-simple-stream. buffer must be a simple-vector (that is, a vector that is not adjustable, not displaced, and does not have a fill-pointer). The external-format argument should be the name of an external-format, or :default will cause it to be looked up in the locale.

Writing can be done on the stream, and file-position can be used to read and set the location, but not past the end of the buffer. A read past the end of the buffer causes an error.

See streams.htm for information on the simple-streams implementation in Allegro CL.

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Created 2019.8.20.