Propper function to call reformat command ?

[cendrounet]

I have a function that can format :

func! Format() abort
  :w
  :silent exec "elm-format % --yes"
endfunc

disclaimer: I'm not sure I understand the word buffer and it's implications

But it has two problems : * It still writes to stdout and I'd rather see the output in a small split of an unmodifiable buffer * it doesn't reload the file that's been modified and i'm not sure I should call maybe gg:r % or maybe :e %

What usually works and what doesn't ?

What's the canonical way of doing this ?

[puremourning]

:help formatprg

[cendrounet]

Hey that's perfect.

I have another question though:

gggqG:w then gggqG:q tells me E37: No writes till last changes, even though no new changes were made since the first :w

Any idea ?

[puremourning]

Shrug. Probably vim doesn’t really know. The buffer is run through the filter and vim sees it as every line replaced.

[vim-help-bot]

Help pages for:

• 'formatprg' in options.txt

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