stream-advance-to-column

Arguments: stream column

Writes enough blank space so that the next character will be written at the specified column. Returns true if the operation is successful, or nil if it is not supported for stream. This is intended for use by the pretty printer and format ~T. The default method uses stream-line-column and repeated calls to stream-write-char with a #\space character; it returns nil if stream-line-column returns nil.

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

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Created 2015.5.21.