Re: Temporarily suppress all error messages

Le 19/05/2026 à 04:52, Astrea Drifter a écrit :
>
> While searching for solutions, I found a thread where the following 
> commands were recommended to turn off error and warning messages 
> respectively, and these seemed well suited for the use case of that 
> thread's op:
> :lisp (defun merror(&rest foo) nil)
> :lisp (defun mtell (&rest foo) nil)
>
> Unfortunately, while I have some experience with Maxima, I know 
> nothing at all about Lisp.

A little pedagogy: a lot of errors in maxima trigger the function 
merror, which outputs the appropriate error message. In lisp you can 
redefine any function, so when doing  (defun merror(&rest foo) nil) you 
are just redefining merror to produce nil, for whatever arguments you 
feed merror with (&rest foo). Idem for mtell which is triggered by less 
severe problems. But this does not work for your use case because the 
error is produced at the level of the parser (nparse.lisp) in which 
errors do not call merror or mtell, but just use the lisp function 
format to output a message.

(format t (intl:gettext "incorrect syntax: "))  line 122 of nparse.lisp

followed by some more complex stuff to output the cause of the error, 
here ~ is not an infix operator ...

Since you probably don't want to redefine lisp functions, i don't see 
how to mute this error message.


-- 
Michel Talon

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