The way options feature was implemented does not allow adding other arguments to xvfb-run itself, like enabling an error log.
Usually you would have to add something like -e /tmp/x.logto xvfb-run to enable logging instead of the implicit /dev/null but we cannot do that using options because the composed command will become /usr/bin/xvfb-run --auto-servernum -s -e x.log ...
The -s being before our extra options breaks it and I am not aware of a way to address that.
The way
optionsfeature was implemented does not allow adding other arguments to xvfb-run itself, like enabling an error log.Usually you would have to add something like
-e /tmp/x.logtoxvfb-runto enable logging instead of the implicit/dev/nullbut we cannot do that using options because the composed command will become/usr/bin/xvfb-run --auto-servernum -s -e x.log ...The
-sbeing before our extra options breaks it and I am not aware of a way to address that.