fix(grammar): adapt to upstream regex change

[clason]

Upstream switched to Rust regex in recent tree-sitter, so the common escape_sequence pattern /u{[\da-fA-F]+}/ now needs to escape the braces. This fixes :TSInstallFromGrammar.

[DavisVaughan]

Can you please point me to the upstream PR for this change?

[clason]

tree-sitter/tree-sitter#2838 (EDIT wrong link, sorry about that)

[clason]

(you can also just verify this by installing a recent tree-sitter CLI (0.22.5 is latest) and doing tree-sitter generate in your repo)

[amaanq]

this is required, else this grammar is unusable in the latest versions

[clason]

Changelog is here: https://github.com/tree-sitter/tree-sitter/blob/master/CHANGELOG.md#0220--2024-03-10 (change was made in 0.22.0).

[clason]

@DavisVaughan would be nice to get this in (or let me know what I should change) so we can unbreak tree-sitter generate (this is the last remaining parser in nvim-treesitter that still fails due to that).

[clason]

Thanks!

[DavisVaughan]

Thanks @clason, and thanks for committing the minimal amount to get this change in rather than all the new files that come with tree-sitter 0.22+ 😆 (although we will get those updated soon too).

[clason]

The day I discovered generate --no-bindings was a happy day for me :) (I don't even know what half of these files do...)