On Thursday, March 17, 2016 at 6:22:25 PM UTC-4, Bram Moolenaar wrote:
> Kent Sibilev wrote:
> 
> > > > On Wednesday, March 16, 2016 at 5:52:38 PM UTC-4, Bram Moolenaar wrote:
> > > > > Patch 7.4.1582
> > > > > Problem:    Get E923 when using function(dict.func, [], dict). (Kent 
> > > > > Sibilev)
> > > > >             Storing a function with a dict in a variable drops the 
> > > > > dict if the
> > > > >             function is script-local.
> > > > > Solution:   Translate the function name.  Use dict arg if present.
> > > > > Files:      src/eval.c, src/testdir/test_partial.vim
> > > > > 
> > > > > 
> > > > 
> > > > This change introduced another bug:
> > > > 
> > > > function! s:MyFunc(bang, buffer)
> > > >   echo a:bang . a:buffer
> > > > endfunction
> > > > command! -bang -complete=buffer -nargs=? MyFunc call s:MyFunc('<bang>', 
> > > > '<args>')
> > > > command! -bang -complete=buffer -nargs=? MyFuncBug call 
> > > > <SID>MyFunc('<bang>', '<args>')
> > > > 
> > > > 
> > > > Calling MyFunc command works fine. Calling MyFuncBug command triggers
> > > > E116 error.
> > > 
> > > I cannot reproduce that problem.  Not sure if your situation is
> > > different or a later patch fixed it.
> > > 
> > > -- 
> > 
> > Hm, :version says I'm running 1-1586 and I can consistently reproduce
> > it. Strange.
> 
> What is the command you give then?  Does it matter if you type it or put
> it in the same script as s:MyFunc()?
> 
> -- 

When I execute MyFunc command, it works:

:MyFunc /tmp
/tmp

When I execute MyFuncBug command, it produces an error:

:MyFuncBug /tmp
E116: Invalid arguments for function <SNR>164_MyFunc

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