alt Hacker NewsA syntax tree node does not fit into a git object. Too many children. This doesn't mean we shouldn't keep everything that's great about git in a next-gen solution, but it does mean that we'll have to build some new tools to experiment with features like semantic patching and merging.
Also I checked the author out and can confirm that they know how git works in detail.
Why do you think it has too many children? If we are talking direct descendents, I have seen way larger directories in file systems (git managed) than I've ever seen in an AST.
I don't think there's a limit in git. The structure might be a bit deep for git and thus some things might be unoptimized, but the shape is the same.
Tree.