On Wed, May 4, 2022 at 8:11 AM Jérôme LAURENS <jerome.laurens@u-bourgogne.fr> wrote:
The busy pdf can be named \jobname.pdf(busy), similar to \jobname.synctex(busy)

'('  and ')'  need to be escaped in bash and , as written before, the format can choose the same name to write its data.
So it has to be a temp name, something like \jobname-<tempname>, where <tempname> is given by the OS.