chickadee » srfi-35 » extract-condition

Condition must be a condition belonging to condition-type. Extract-condition returns a condition of condition type condition-type with the field values specified by condition.

If condition is a compound condition, extract-condition extracts the field values from the subcondition belonging to condition-type that appeared first in the call to make-compound-condition that created the the condition. The returned condition may be newly created; it is possible for

(let* ((&c (make-condition-type 'c &condition '()))
       (c0 (make-condition &c))
       (c1 (make-compound-condition c0)))
  (eq? c0 (extract-condition c1 &c)))

to return false.