Joseph,
On Fri, Jul 17, 2015 at 12:09:27PM +0100, Joseph Wright wrote:
>by
>
> \bool_if:nTF
> {
> !\cs_if_exist:cTF {#1}
really an `!' in front?
>by
>
> \bool_if:nT
> {
> ! \cs_if_exist:NTF \fxocg@insert@OC
same here.
>which could be redone as for the first case in media9. However,
>reviewing the code I realise that as you have \use:c here you'll
>actually get away with it (the second part will evaluate even if the
>csname is undefined). If you do want a 'safe' change then
>
> \bool_if:nTF
> {
> ! \cs_if_exist:cTF { OCGpdfobj#3 }
same here.
Alexander