Package: trivial-gray-streams

Generic Function stream-line-column

Lambda List

stream-line-column (stream)


This function returns the column number where the next character will be written, or nil if that is not meaningful for this stream. The first column on a line is numbered 0. This function is used in the implementation of cl:pprint and the cl: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.