On 8/26/21 9:47 AM, Martin Sebor wrote:
> I think I'd prefer to let you do this.

OK, proposed glibc patch attached. As I lack the time to shepherd each 
regex fix into Glibc separately, I simply copied regex-relevant source 
files from Gnulib to Glibc, after merging recent Glibc changes (plus 
your proposal) into Gnulib.

Please give the patch a try.