Set cursor to foo()| instead of foo(|) with no function parameters

[GordianDziwis]

I have nvim-autopairs and lsp-signature for handling function signatures.

But on a function, that does not have any parameters, the cursor is after completion inside the parameters brackets:

foo(|) but it should be like this: foo()|

The building blocks are there, but I do not know how to achieve this functionality.

[Sam-programs]

         cmp.event:on(
            'confirm_done',
            cmp_autopairs.on_confirm_done()
         )
         local kind = cmp.lsp.CompletionItemKind
         cmp.event:on('confirm_done', function(event)
            local entry = event.entry
            local item = entry:get_completion_item()
            local functionsig = item.label
            if  item.kind == kind.Function or item.kind == kind.Method then
               if functionsig:sub(#functionsig - 1, #functionsig) == '()' then
                  vim.api.nvim_feedkeys(
                     vim.api.nvim_replace_termcodes('<C-g>U<right>',true,false,true)
                     , "n", false)
               end
            end
         end)

this should work

[GordianDziwis]

Thanks a lot. I needed it for Rust, so I modified it:

local autopairs = require 'nvim-autopairs.completion.cmp'
local kind = require('cmp').lsp.CompletionItemKind

local function on_confirm_done(event)
    local item = event.entry:get_completion_item()
    local detail = item.detail or ''
    local is_function_or_method = item.kind == kind.Function
        or item.kind == kind.Method
    local is_self_function = detail:match '^%s*fn%s*%([^%),]-self%s*%)%s*'
    local is_empty_params = detail:match '^%s*fn%s*%(%s*%)%s*'
        or item.label:match '%(%)$'

    if is_function_or_method and (is_self_function or is_empty_params) then
        local keys =
            vim.api.nvim_replace_termcodes('<C-g>U<Right>', true, false, true)
        vim.api.nvim_feedkeys(keys, 'n', false)
    end
end

require('cmp').event:on('confirm_done', autopairs.on_confirm_done())
require('cmp').event:on('confirm_done', on_confirm_done)