&optional
input-stream eof-error-p eof-value recursive-p → line, missing-newline-pReads from input-stream a line of text that is terminated by a newline or end of file.
If recursive-p is true, this call is expected to be embedded in a higher-level call to read or a similar function used by the Lisp reader.
The primary value, line, is the line that is read, represented as a string (without the trailing newline, if any). If eof-error-p is false and the end of file for input-stream is reached before any characters are read, eof-value is returned as the line.
The secondary value, missing-newline-p, is a generalized boolean that is false if the line was terminated by a newline, or true if the line was terminated by the end of file for input-stream
(or if the line is the eof-value).
(defparameter *a* "line 1 line 2")
→"line 1 line 2"
(defparameter *input-stream* (make-string-input-stream *a*)) (read-line *input-stream*)
→"line 1" false
(read-line *input-stream*)
→"line2" true
(read-line *input-stream* nil nil)
→
None.
If an end of file occurs before any characters are read in the line, an error is signaled if eof-error-p is true.
The corresponding output function is write-line.
\issue{ARGUMENTS-UNDERSPECIFIED:SPECIFY}