Explanation of "Graphemes" and Unicode Forms Stuff

[zoffixznet]

I have a simple task to solve:

[13:02] <MetaZoffix> m: say "7\x[308]" ~~ /^ \d+ $/
[13:02] <+camelia> rakudo-moar f0bb58: OUTPUT«｢7̈｣␤»
[13:03] <MetaZoffix> Is there an easy way to make it look for *just* numbers without combiners?

But I'm not seeing any section on this in https://docs.perl6.org/language.html

By osmosis, I know I need some sort of .NFD or something along the lines of that, but from a perspective of someone who's not familiar with what unicode forms there are and what they're all about, it's hard to understand what I am supposed to do to make my original operation work right.

There should be a page that explains all of this stuff.

[JJ]

Graphemes are now explained in the documentation. Would that be enough? What else would be needed?