Auto-run diagnostics / sort diagnostics

[redcartel]

Is it possible to automatically run diagnostics on open & write?

Is it possible to sort the output by error severity or which checker generated the alert?

Looking to get behavior similar to syntastic.

[prabirshrestha]

Can you share how syntastic does it? Is it by flags to commands? Shortcut keys?

[yunusemrecan]

I don't know vimscript but I find that from ale(another linting plugin).
if g:ale_lint_on_enter autocmd BufWinEnter * call ale#events#LintOnEnter(str2nr(expand('<abuf>'))) " Track when the file is changed outside of Vim. autocmd FileChangedShellPost * call ale#events#FileChangedEvent(str2nr(expand('<abuf>'))) endif

[prabirshrestha]

closing to clean up stale issues.