argument. This argument must be relative to the root of the wiki sources.
* `task_tmpdir`: directory where to copy task data files before calling task.
It can be used to circumvent [[lack of `--read-only`
argument. This argument must be relative to the root of the wiki sources.
* `task_tmpdir`: directory where to copy task data files before calling task.
It can be used to circumvent [[lack of `--read-only`