"no parser for 'latex' language" error even though I don't use treesitter

[JetpackJackson]

Got this error recently, setting use on markdown to false stops it (I don't get this error in tex files.)

Error executing lua callback: /usr/share/nvim/runtime/lua/vim/treesitter/language.lua:99: no parser for 'latex' language, see :help treesitter-parsers
stack traceback:
    [C]: in function 'error'
    /usr/share/nvim/runtime/lua/vim/treesitter/language.lua:99: in function 'add'
    /usr/share/nvim/runtime/lua/vim/treesitter/languagetree.lua:109: in function 'new'
    /usr/share/nvim/runtime/lua/vim/treesitter.lua:64: in function '_create_parser'
    /usr/share/nvim/runtime/lua/vim/treesitter.lua:130: in function 'get_parser'
    ...ippets.nvim/lua/luasnip-latex-snippets/util/ts_utils.lua:20: in function 'get_node_at_cursor'
    ...ippets.nvim/lua/luasnip-latex-snippets/util/ts_utils.lua:56: in function 'fn'
    ...-snippets.nvim/lua/luasnip-latex-snippets/util/utils.lua:19: in function 'condition'
    ...al/share/nvim/lazy/luasnip/lua/luasnip/nodes/snippet.lua:27: in function 'resolveExpandParams'
    ...al/share/nvim/lazy/luasnip/lua/luasnip/nodes/snippet.lua:769: in function 'matches'
    .../luasnip/lua/luasnip/session/snippet_collection/init.lua:176: in function 'match_snippet'
    .../jet/.local/share/nvim/lazy/luasnip/lua/luasnip/init.lua:352: in function 'expand_auto'
    ...et/.local/share/nvim/lazy/luasnip/lua/luasnip/config.lua:279: in function <...et/.local/share/nvim/lazy/luasnip/lua/luasnip/config.lua:277>```

[iurimateus]

I don't think we should error there, but markdown is only supported with treesitter (which use_markdown implies).

[v0ry]

Had the same problem, had to config the Treesitter,

-- Userd For Syntax Highlighting
-- https://linovox.com/nvim-treesitter-syntax-highlighting-in-neovim/
local M = {
  "nvim-treesitter/nvim-treesitter",
  event = { "BufReadPost", "BufNewFile" },
  build = ":TSUpdate",
}

function M.config()
  require("nvim-treesitter.configs").setup {
    ensure_installed = { "lua", "markdown", "markdown_inline", "bash", "python", "c", "cpp", "css", "html", "javascript" },
    ignore_install = { "latex"}, -- Don't install parsers with filetypes in this list
    highlight = { enable = true, disable = { "latex" } }, -- Don't enable synxtax highlighting for latex
    auto_install = true,
    sync_install = false, -- install synchronously
    indent = { enable = true },
    rainbow = {
      enable = true,
      extended_mode = true, -- Highlight also non-parentheses delimiters, boolean or table: lang -> boolean
      max_file_lines = 1000, -- Do not enable for files with more than 1000 lines, int
    },
    incremental_selection = {
      enable = true,
      keymaps = {
        init_selection = "gnn",
        node_incremental = "grn",
        scope_incremental = "grc",
        node_decremental = "grm",
      },
    },
  }
end

return M

Now your the parser won't load, and you disabled syntax hightlighting. Which you want VimTex to do. You can check out my config, it works. using neovim.lazy on macos nvim

[JetpackJackson]

Thanks for the code. I haven't had this error in a while, but I've also changed a lot of my plugins and parts of my config since then so I'm thinking it could have been some sort of conflict with something else I had installed. Should I close the issue?

[iurimateus]

Should I close the issue?

I haven't looked into it yet... Leave it open so I can track it.

[keiwanjamaly]

I had the same error recently and to my understanding, luasnip-latex-snippets.nvim uses treesitter for example

https://github.com/iurimateus/luasnip-latex-snippets.nvim/blob/064f2abb6d08ebdd17b4a2baa181ffa7c4011f39/lua/luasnip-latex-snippets/util/ts_utils.lua#L20

So I basically installed the treesitter latex parser and disabled syntax highlighting for latex in treesitter (if you prefer the vimtex highlighter).

[iurimateus]

This should only be called if use_treesitter is set to true though...