Why not use :w %:h/duplicate?

from vim-eunuch.

yeah, I just want the convenience of creating the file and then open it

:Duplicate copy.txt

I guess it's super easy to create the function

from vim-eunuch.

Can you help me with 3rd line?
I don't know any vimscript

the idea is type C-R then = and then expand current filename, so the user can type another filename.

function! s:duplicate()
  let n = input("Name: ")
  <C-R>=fnameescape(expand("%:p"))<CR>
  if n != ''
    execute "w " . n 
    execute "e " . n 
  endif
endfunction
:command! -bar Duplicate :call s:duplicate()

from vim-eunuch.

This function already works, but you have to type the file extension, and that's boring because extension is always the same

function! s:duplicate(name)
  if a:name != ''
    execute "w %:h/" . a:name 
    execute "e %:h/" . a:name 
  endif
endfunction
:command! -nargs=1 -bar Duplicate :call s:duplicate(<f-args>)

Use:

Duplicate copy.txt

from vim-eunuch.

How is that different from :saveas %:h/name?

from vim-eunuch.

How is that different from :saveas %:h/name?

Man.. that's like an alien talking.
Ease of use must be a thing before microsoft takes all developers to vscode imho

from vim-eunuch.

The word "duplicate" does not mean "create a copy in the current directory with the same extension" so I don't think it's any less alien than :saveas %:h/. I think a weirdly named command like that would be more confusing than helpful in eunuch.vim.

But by all means create one for your own use. %:e will give you the extension.

from vim-eunuch.