Re: "functions -c" and TRAPxxx

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

On Thu, Jun 9, 2022 at 1:56 AM Peter Stephenson
<p.w.stephenson@xxxxxxxxxxxx> wrote:
>
> Looks like the only way for settrap to fail is using a signal number
> that's not handled interactively.

% trapper() { print $0 }
% for t in $(kill -l)
for> do functions -c trapper TRAP$t || echo cannot $t
for> done
%

So as far as I can tell it's not possible for settrap() to fail (on
ubuntu, anyway) if getsignum() succeeds.

Some of those traps are ignored (STOP, KILL) but you can set them anyway.