sdf but for templates/generics

[boxdot]

Contributing guidelines

• I have read CODE_OF_CONDUCT.md

Module(s)

mini.surround

Question

sdf is super super useful for removing function calls. In languages with templates (Rust, C++), the same functionality would be very useful whenever removing a template e.g. doing sdf on Vec<SomeType> should just keep SomeType.

Is there a way to customize sdf for that, or maybe introduce another shortcut?

Also slightly orthogonal but similar. Often function calls have a path in them e.g. module::function(args), but sdf does not work on it. Is it possible to customize it to remove module::function(...)?

[echasnovski]

In languages with templates (Rust, C++), the same functionality would be very useful whenever removing a template e.g. doing sdf on Vec<SomeType> should just keep SomeType.

Is there a way to customize sdf for that, or maybe introduce another shortcut?

Of course. You can pretty much reuse how f itself is defined. Here is an example of how to do it for t surrounding (will override "tag" surrounding). Here is how to do it globally:

require('mini.surround').setup({
  custom_surroundings = {
    t = {
      input = { '%f[%w_%.][%w_%.]+%b<>', '^.-<().*()>$' },
      output = function()
        local fun_name = MiniSurround.user_input('Template name')
        if fun_name == nil then return nil end
        return { left = fun_name .. '<', right = '>' }
      end,
    },
  },
})

A more reasonable approach would be to only redefine this surrounding for filetypes that you want. For example:

• Create '~/.config/nvim/after/ftplugin/rust.lua' file (if not already).

• Add creation of the following buffer-local config:

  vim.b.minisurround_config = {
    custom_surroundings = {
      t = {
        input = { '%f[%w_%.][%w_%.]+%b<>', '^.-<().*()>$' },
        output = function()
          local fun_name = MiniSurround.user_input('Template name')
          if fun_name == nil then return nil end
          return { left = fun_name .. '<', right = '>' }
        end,
      },
    },
  }

Also slightly orthogonal but similar. Often function calls have a path in them e.g. module::function(args), but sdf does not work on it. Is it possible to customize it to remove module::function(...)?

By default f recognizes function name as the string that contains only alphanumeric+_+. characters. To adjust that (globally) follow the same approach as above, but customize only input part of f surrounding:

require('mini.surround').setup({
  custom_surroundings = {
    f = { input = { '%f[%w_%.:][%w_%.:]+%b()', '^.-%(().*()%)$' } },
  },
})