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" Author: w0rp <devw0rp@gmail.com>

function! ale#events#SaveEvent(buffer) abort
    call setbufvar(a:buffer, 'ale_save_event_fired', 1)
    let l:should_lint = ale#Var(a:buffer, 'enabled') && g:ale_lint_on_save

    if g:ale_fix_on_save
        let l:will_fix = ale#fix#Fix('save_file')
        let l:should_lint = l:should_lint && !l:will_fix
    endif

    if l:should_lint
        call ale#Queue(0, 'lint_file', a:buffer)
    endif
endfunction

function! s:LintOnEnter(buffer) abort
    if ale#Var(a:buffer, 'enabled')
    \&& g:ale_lint_on_enter
    \&& has_key(b:, 'ale_file_changed')
        call remove(b:, 'ale_file_changed')
        call ale#Queue(0, 'lint_file', a:buffer)
    endif
endfunction

function! ale#events#EnterEvent(buffer) abort
    let l:filetype = getbufvar(a:buffer, '&filetype')
    call setbufvar(a:buffer, 'ale_original_filetype', l:filetype)

    call s:LintOnEnter(a:buffer)
endfunction

function! ale#events#FileTypeEvent(buffer, new_filetype) abort
    let l:filetype = getbufvar(a:buffer, 'ale_original_filetype', '')

    if a:new_filetype isnot# l:filetype
        call ale#Queue(300, 'lint_file', a:buffer)
    endif
endfunction

function! ale#events#FileChangedEvent(buffer) abort
    call setbufvar(a:buffer, 'ale_file_changed', 1)

    if bufnr('') == a:buffer
        call s:LintOnEnter(a:buffer)
    endif
endfunction