Support for fnamemodified paths (specifically %:h)

[Julian]

It would be great if e.g. :e %:h/foo suggested completions for the expanded %:h (i.e. the parent directory of the current file name). Right now I either get no completion suggestions when paths include %, or I get incorrectly expanded paths (where the %:h is still present after confirming the completion). A minimal init is:

vim.cmd [[set runtimepath=$VIMRUNTIME]]
vim.cmd [[set packpath=/tmp/nvim/site]]

local package_root = '/tmp/nvim/site/pack'
local install_path = package_root .. '/packer/start/packer.nvim'

local function load_plugins()
  require('packer').startup {
    {
      'hrsh7th/nvim-cmp',
      'hrsh7th/cmp-path',
      'hrsh7th/cmp-cmdline,
      'wbthomason/packer.nvim',
    },
    config = {
      package_root = package_root,
      compile_path = install_path .. '/plugin/packer_compiled.lua',
    },
  }
end

if vim.fn.isdirectory(install_path) == 0 then
  vim.fn.system { 'git', 'clone', 'https://github.com/wbthomason/packer.nvim', install_path }
  load_plugins()
  require('packer').sync()
else
  load_plugins()
  require('packer').sync()
end

local cmp = require'cmp'

cmp.setup({
  mapping = {
    ['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
    ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
    ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
    ['<C-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
    ['<C-e>'] = cmp.mapping({
      i = cmp.mapping.abort(),
      c = cmp.mapping.close(),
    }),
    ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
  },
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
    { name = 'path' },
    { name = 'vsnip' }, -- For vsnip users.
  }, {
    { name = 'buffer' },
  })
})

-- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline('/', {
  sources = {
    { name = 'buffer' }
  }
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(':', {
  sources = cmp.config.sources({
    { name = 'path' }
  }, {
    { name = 'cmdline' }
  })
})

Which seems to exhibit the first behavior (no completion suggestions). My full config exhibits the latter, I have to bisect why, but neither seems to support the expansion. Let me know if this makes sense for cmp-path! (And thanks for making cmp)

[hrsh7th]

I think it should be supported by cmp-cmdline source side.

[Julian]

Should I reopen in that repo? (Or are you saying you think this is functionality already present there? In my own config I have both enabled)

[Julian]

Ah, it appears hrsh7th/cmp-cmdline#15 is maybe related (or the same issue).