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

[Jason Franklin]

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...

[Luc Hermitte]

Hi,

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

[Jason Franklin]

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

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[Christian Brabandt]

If you have a recent enough Vim version, you can use the getbufinfo()
function and check the changed attribute.


Christian
--
Vaterland nennt sich dieser Staat immer dann,
wenn er sich anschickt, auf Menschenmord zu gehen.
-- Kurt Tucholsky

[Jason Franklin]

Thanks, Christian.  I have various versions of Vim running on a lot of machines, so its best if I keep with older methods.

Will keep this in mind going forward, though!

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

Georgia Southern University

P.O. Box 8088

Statesboro, GA 30460
912.478.5639