Help Add custom concealing rule for VimTeX on neovim about vimtex

[martipares]

Thank you, this helps me a lot.
I will try this configuration with indentation and the mappings enabled.

[lervag]

Glad to help!

[lervag]

My objective is to conceal a newcommand \Yo whit よ.

My current configuration for vimtex is this: (~/.../vimtex.lua)

I believe this should be a simplified and improved configuration with the desired added syntax rule

return {
  "lervag/vimtex",
  lazy = false,
  init = function()
    vim.g.vimtex_view_method = 'zathura_simple'
    vim.g.vimtex_quickfix_mode = 0
    vim.g.vimtex_mappings_enabled = 0
    vim.g.vimtex_indent_enabled = 0
    vim.g.vimtex_context_pdf_viewer = 'okular'
    vim.g.vimtex_log_ignore = ({
      'Underfull',
      'Overfull',
      'specifier changed to',
      'Token not allowed in a PDF string',
    })
    vim.g.vimtex_syntax_custom_cmds = {
      {
        name = 'Yo',
        mathmode = true,
        concealchar = 'よ'
      },
    }
  end,
}

By the way, are you sure you want to disable indentation and the mappings? As a newcomer, I would think it useful to at least have the default mappings.