Determines whether an argument is an error object returned from vl-catch-all-apply
Supported Platforms: Windows and Mac OS
(vl-catch-all-error-p arg)
Type: Integer, Real, String, List, Subroutine, Ename (entity name), T, nil, or catch-all-apply-error
Any argument.
Type: T or nil
T, if the supplied argument is an error object returned from vl-catch-all-apply; otherwise nil.
Divide by zero using vl-catch-all-apply:
(setq catchit (vl-catch-all-apply '/ '(50 0))) #<%catch-all-apply-error%>
Use vl-catch-all-error-p to determine if the value returned by vl-catch-all-apply is an error object:
(vl-catch-all-error-p catchit) T