Add nvim-treesitter.

Haven't enabled almost anything explicitly yet because of [1]; I like
rainbow. Should be simple to fix, just requires some config changes.

Have definitely enabled TS for .tex files though, since the native
syntax highlighting is way too slow.

[1] luochen1990/rainbow#163

.gitmodules

@@ -34,3 +34,6 @@
 [submodule "nvim/.config/nvim/pack/plugins/start/telescope-fzf-native.nvim"]
 	path = nvim/.config/nvim/pack/plugins/start/telescope-fzf-native.nvim
 	url = https://github.com/nvim-telescope/telescope-fzf-native.nvim.git
+[submodule "nvim/.config/nvim/pack/plugins/start/nvim-treesitter"]
+	path = nvim/.config/nvim/pack/plugins/start/nvim-treesitter
+	url = https://github.com/nvim-treesitter/nvim-treesitter.git

nvim/.config/nvim/init.vim

@@ -67,6 +67,17 @@ require('telescope').load_extension('fzf')
 EOF
 
 
+" TREE-SITTER
+
+" Use tree-sitter to highlight Latex, it's considerably less laggy
+fu! LatexUseTS()
+	:syntax clear
+	:TSEnableAll highlight
+	:TSBufEnable highlight
+endfunction
+autocmd BufNewFile,BufRead *.tex :call LatexUseTS()
+
+
 " LANGUAGE SERVER
 
 " Partly from https://github.com/neovim/nvim-lspconfig/blob/master/README.md

void/void.sh

@@ -63,7 +63,7 @@ _device="usbutils"
 _monitor="bmon htop"
 _net="curl wget git aerc asciinema lynx weechat"
 _crypto="gnupg2 outils minisign"
-_shell="fish-shell lolcat-c tmux xxd neovim"
+_shell="fish-shell lolcat-c tmux xxd neovim tree-sitter-devel"
 _tools="bsdtar fd lowdown p7zip parallel ripgrep ugrep stow execline s6 fswatch moreutils"
 _boxes="toybox toybox.static busybox"
 _void="vsv xtools fuzzypkg graphviz"