Re: What is the fastest way to detect modifications to any listed buffer?

Luc,

Thanks for the reply!  Looks like doing it in one step is preferable because we're already having to filter the buffers anyway.

----------------------------------------
Jason R. Franklin
Associate Systems Software Developer
Enterprise Technology Solutions

Georgia Southern University

P.O. Box 8088

Statesboro, GA 30460
912.478.5639

On Thu, Dec 7, 2017 at 9:22 AM, Luc Hermitte <hermitte@free.fr> wrote:

Hi,

> I would like an indicator in my 'titlestring' that informs me if ANY
> changes are present in ANY listed buffer.  This would be more like a
> global indicator for the 'modified' setting.  What is the most
> efficient way to do this?
>
> Currently, I've taken the naive approach:
>
> function! g:ChangesExist()
>     let l:bufferList = filter(range(1, bufnr('$')), 'buflisted(v:val)')
>     for l:bufferNumber in l:bufferList
>
>         if getbufvar(l:bufferNumber, '&modified')
>             return 1
>         endif
>     endfor
>     return 0
> endfunction
>
>
> This seems like the most direct method, but I'm wondering if there's
> some simple option or function call that I'm missing...

If speed is really that important, get rid of the loop and use something like

   return !empty(filter(bufferList, "getbufvar(v:val, '&modified')"))

or, in a single step:

   return !empty(filter(range(1, bufnr('$')), "buflisted(v:val) && getbufvar(v:val, '&modified')"))

--
Luc Hermitte

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