On 1/12/2021 3:07 PM, Ulrike Fischer wrote:
> Am Tue, 12 Jan 2021 12:59:55 +0100 schrieb Hans Hagen:
>
>> It will be:
>>
>> \protected\def\pdfrunninglinkoff{\pdfextension linkstate 1 }
>> \protected\def\pdfrunninglinkon {\pdfextension linkstate 0 }
>
> Sounds good. How can one test if the extension is there? Do one has
> to test against the luatex version or is there something like a
> \ifdefinedextension test?

When Luigi has pushed the code in svn the development_id