Jon Boone pushed to branch issue-143-ansi-compliance-failure-listen-extra-argument at cmucl / cmucl

Commits: 873fa8b1 by Jon Boone at 2023-05-03T19:33:09-04:00 Fix #143 - add gray-stream support and update docstring

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1 changed file:

- src/code/stream.lisp

Changes:

===================================== src/code/stream.lisp ===================================== @@ -605,7 +605,10 @@ :eof-detected-form (eof-or-lose stream eof-errorp eof-value))))))

(defun listen (&optional (stream *standard-input*) (width 1 width-p)) - "Returns T if a character is available on the given Stream." + _N"Returns T if a character is available on the given Stream. + Argument width is only used by streams of type simple-stream. + If stream is of type lisp-stream or fundamental-stream, + passing more than one argument is invalid. " (declare (type streamlike stream)) (let ((stream (in-synonym-of stream))) (stream-dispatch stream @@ -622,7 +625,13 @@ ;; Test for t explicitly since misc methods return :eof sometimes. (eq (funcall (lisp-stream-misc stream) stream :listen) t))) ;; fundamental-stream - (stream-listen stream)))) + (progn + (when width-p + (error 'kernel:simple-program-error + :function-name 'listen + :format-control (intl:gettext "Invalid number of arguments: ~S") + :format-arguments (list 2))) + (stream-listen stream)))))

(defun read-char-no-hang (&optional (stream *standard-input*) (eof-errorp t) eof-value recursive-p)

View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/-/commit/873fa8b1049aea0c7165ef38...