Re: E77: Too many files

Thanks a lot (also to Jürgen)

On Fri, 18 Dec 2020 02:06:18 -0800
Gary Johnson <garyjohn@spocom.com> wrote:

> On 2020-12-18, Manfred Lotz wrote:
> > I have a simple scratch buffer functionity in scratch.vim like
> > follows
> >
> > if exists('g:loaded_scratch')
> > finish
> > endif
> > let g:loaded_scratch = 1
> >
> > let g:scratchbuf_no = 1
> >
> > function! ScratchEdit(cmd)
> > exe a:cmd '[Scratch' . g:scratchbuf_no . ']'
> > let g:scratchbuf_no += 1
> >
> > setlocal buflisted
> > setlocal noswapfile
> > setlocal buftype=nofile
> > setlocal bufhidden=hide
> > setlocal foldcolumn=0
> > setlocal nonumber
> > endfunction
> >
> > command! -bar -nargs=* Scratch call ScratchEdit('edit')
> >
> > (if above could/should be improved any advice is welcome)
> >
> >
> > Sometimes when issueing :Scratch I get
> >
> > E77: Too many files
> >
> > Then after some minutes when switching buffers (but not having
> > closed any buffer) I can do :Scratch without any errors.
> >
> > Any ideas how to find out what the cause is?
>
> The problem is that your edit command,
>
> exe a:cmd '[Scratch' . g:scratchbuf_no . ']'
>
> expands to this, when g:scratchbuf_no is 1, for example:
>
> edit [Scratch1]
>
> Vim looks for a file matching the glob "[Scratch1]", which is
> a single character in the set "S c r a t c h 1". If the glob
> doesn't match any files, the buffer name "[Scratch1]" is used. If
> the glob matches one file, that file is opened. If you happen to
> have more than one file with a single-character name from that set,
> then that glob will match more that one file and you will get E77.
>
> You can fix that problem by escaping the brackets like this:
>
> exe a:cmd '\[Scratch' . g:scratchbuf_no . '\]'
>
> Some years ago I wrote a similar function to create a scratchpad
> buffer with a name enclosed in brackets with results similar to
> yours. I was very confused until the "Aha!" moment.
>

Your explanations hit the nail on the head.

I tested it by creating two files S and r and E77 showed up! Your
suggestion (no surprise) fixed it.

Thanks again.


--
Best, Manfred

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