;;;; format interpreters and support functions for simple output
(defun format-write-field (stream string mincol colinc minpad padchar padleft)
+ (when (and colinc (<= colinc 0))
+ (error 'format-error
+ :complaint "The value of colinc is ~a, should be a positive integer"
+ :args (list colinc)))
+ (when (and mincol (< mincol 0))
+ (error 'format-error
+ :complaint "The value of mincol is ~a, should be a non-negative integer"
+ :args (list mincol)))
(unless padleft
(write-string string stream))
(dotimes (i minpad)
:complaint
"cannot specify either colon or atsign for this directive"))
(interpret-bind-defaults ((count 1)) params
- (fresh-line stream)
- (dotimes (i (1- count))
- (terpri stream))))
+ (when (plusp count)
+ (fresh-line stream)
+ (dotimes (i (1- count))
+ (terpri stream)))))
(def-format-interpreter #\| (colonp atsignp params)
(when (or colonp atsignp)