Here is the diff of the latest commit. (Patch attached anyway).

https://github.com/Ergus/Emacs/commit/4943087027acd3f2c7a54a092b64bc839ef8850e


On Wed, Sep 04, 2019 at 10:04:16PM +0200, martin rudalics wrote:
>> I have just uploaded some changes but the functionality is still not
>> working.
>>
>> I separated the changes in 3 commits and in the last one are only the
>> ones I made in the xdisp.c (the ones that need to be checked, because
>> the rest is only infrastructure.)
>>
>> see the master branch in: https://github.com/Ergus/Emacs
>
>Please send a patch for current master.  Otherwise I have no idea how
>to compare your changes.
>
>Thanks, martin