Re: E172 error

Hi Marcin!

On Fr, 23 Mär 2012, Marcin Szamotulski wrote:

> Hello,
>
> I'm trying to make a nice interface for :call system(...). For this I made the
> following function:
>
> function! System(arg)
> " Expand %, %:p (all modifiers are allowed except :s?pat?sub? and
> " :gs?pat?sub?
> return system(substitute(a:arg, '\(%\%(:[p8~.htre]\)*\)', '\=expand(submatch(0))', 'g'))
> endfunction
>
> The command
> command! -nargs=1 System :echo System("<args>")
> works as expected, but when I change it to:

I am surprised, this actually works and you didn't get E176.

>
> command! -nargs=1 -complete=file System :echo System("<args>")
>
> and use it
> :System ls /tmp
> I get the E172 error. Any ideas why?

You called the command with 2 arguments, but defined it to only accept
one. That's wrong use -nargs=+ and possibly instead of "<args>" you can
also use <q-args>

Mit freundlichen Grüßen
Christian
--
Wenn man viel hineinzustecken hat, so hat ein Tag hundert Taschen.
-- Friedrich Nietzsche

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