Surround function call in latex

[shuber2]

Contributing guidelines

• I have read CODE_OF_CONDUCT.md

Module(s)

mini.surround

Question

When editing tex files, I sometimes would like to surround text by a tex function call, e.g., turn text into \paragraph{text} or \textbf{text}. In a sense, this would be the function-call functionality of surround, i.e., I would like to press saf for visual or saiwf within the word, followed by \textbf. However, it uses parentheses () instead of curly braces {}.

So how would I use mini.surround for this?

Maybe a general solution would be that if I provide func to saf then it would surround by func(), but when I provide func{ it would recognize the bracket type and complete it accordingly.

[shuber2]

Actually, one way to handle this would be to add a custom surrounding for a "command", like this:

require('mini.surround').setup({
  custom_surroundings = {
    c = {
      input = function() return vim.fn.input('Command name: ') end,
      output = function()
        local name = vim.fn.input('Command name: ')
        return { left = '\\' .. name .. '{', right = '}' }
      end,
    },
  },
})

Not sure whether I would prefer the more general idea from above, i.e., when the function name contains a bracket, like \command{ then it would be detect and close it accordingly.

[echasnovski]

'mini.surround' allows buffer-local configuration by setting a vim.b.minisurround_config variable. Its common usage is to customize surroundings per filetype.

My suggestion would be to put the following code (which is an adjusted version of builtin f surrounding) in the '~/.config/nvim/after/ftplugin/plaintex.lua' (and/or other LaTeX adjacent filetype):

if _G.MiniSurround ~= nil then
  vim.b.minisurround_config = {
    custom_surroundings = {
      f = {
        input = { '\\%f[%w_%.][%w_%.]+%b{}', '^.-{().*()}$' },
        output = function()
          local fun_name = MiniSurround.user_input('Function name')
          if fun_name == nil then return nil end
          return { left = '\\' .. fun_name .. '{', right = '}' }
        end,
      },
    },
  }
end