Gemtext grammar for Tree-sitter.
Gemtext is the markup format used in Project Gemini.
TODO: stuff
For another implementation, see: https://git.sr.ht/~sfr/tree-sitter-gemini
The command tree-sitter parse numbers lines from zero.
For easy comparison, this command numbers lines from zero in test.gmi:
nl -v 0 -b a test.gmi