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ANSI Common Lisp 21 Streams 21.2 Dictionary of Streams
21.2.19 terpri, fresh-line |
Function |
- Syntax:
-
terpri
&optional output-stream
nil
fresh-line
&optional output-stream
generalized-boolean
- Arguments and Values:
-
output-stream -- an output stream designator.
The default is standard output.
generalized-boolean - a generalized boolean.
- Description:
-
terpri outputs a newline to output-stream.
fresh-line is similar to terpri but outputs a newline
only if the output-stream is not already at the start of a line.
If for some reason this cannot be determined, then a newline is output anyway.
fresh-line returns true if it outputs a newline;
otherwise it returns false.
- Examples:
-
(with-output-to-string (s)
(write-string "some text" s)
(terpri s)
(terpri s)
(write-string "more text" s))
"some text
more text"
(with-output-to-string (s)
(write-string "some text" s)
(fresh-line s)
(fresh-line s)
(write-string "more text" s))
"some text
more text"
- Side Effects:
-
The output-stream is modified.
- Affected By:
-
*standard-output*,
*terminal-io*.
- Exceptional Situations:
-
None.
- Notes:
-
terpri is identical in effect to
(write-char #\Newline output-stream)
- Allegro CL Implementation Details:
-
None.
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