On 6/21/19 3:51 AM, Lars Ingebrigtsen wrote:
> Here's the commit that added the generation of the file (and the removal
> of the file in extraclean), but it didn't remove the file from git.
> Paul, do you remember the logic behind this?
>
> commit cf2f54c4e3d8adb26e3f4b8e9e51364165877444

The motivation for that commit was to support the GNU idea that we 
should ship source code instead of generated code; in this case macuvs.h 
was being generated from IVD_Sequences.txt, a file that was not part of 
the repository and not shipped, contrary to the GNU ideal. The email 
thread prompting that commit is rooted here:

https://lists.gnu.org/r/emacs-devel/2014-05/msg00427.html

In that commit I wasn't attempting to also follow the principle that we 
shouldn't commit sources that can be generated automatically by standard 
maintainer tools. In hindsight I should have done that as well, and 
removed src/macuvs.h from the repository while I was at it. I just now 
attempted to fix this by installing the attached patch into master.