writing 'let %' in nickel file crashes helix (Segmentation Fault)

[Philipp-M]

Summary

I think the title sums it up already,

Additionally to the Reproduction Steps, it also crashes, when opening a file with the content let %

Reproduction Steps

I tried this:

1. hx test.ncl
2. go to insert mode and write let %
3. crash (Segmentation Fault)

I expected this to happen:
no crash
Instead, this happened:
crash

Helix log

Nothing interesting here even with -vvvv

Platform

NixOS

Terminal Emulator

xterm, alacritty

Helix Version

22.05-218-gb6122110

[the-mikedavis]

Most minimally to reproduce this with the tree-sitter CLI:

$ echo "let %" > test.ncl
$ tree-sitter parse test.ncl

This is a bug either in the grammar or (more likely in my experience) in the external scanner. I'll open up an issue upstream