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" Author: Eddie Lebow https://github.com/elebow
" Description: eruby checker using `erubi`
function! ale_linters#eruby#erubi#CheckErubi(buffer) abort
return 'ruby -r erubi/capture_end -e ' . ale#Escape('""')
endfunction
function! ale_linters#eruby#erubi#GetCommand(buffer, check_erubi_output) abort
let l:rails_root = ale#ruby#FindRailsRoot(a:buffer)
if (!empty(a:check_erubi_output))
" The empty command in CheckErubi returns nothing if erubi runs and
" emits an error if erubi is not present
return ''
endif
if empty(l:rails_root)
return 'ruby -r erubi/capture_end -e ' . ale#Escape('puts Erubi::CaptureEndEngine.new($stdin.read).src') . '< %t | ruby -c'
endif
" Rails-flavored eRuby does not comply with the standard as understood by
" Erubi, so we'll have to do some substitution. This does not reduce the
" effectiveness of the linter---the translated code is still evaluated.
return 'ruby -r erubi/capture_end -e ' . ale#Escape('puts Erubi::CaptureEndEngine.new($stdin.read.gsub(%{<%=},%{<%}), nil, %{-}).src') . '< %t | ruby -c'
endfunction
call ale#linter#Define('eruby', {
\ 'name': 'erubi',
\ 'executable': 'ruby',
\ 'command_chain': [
\ {'callback': 'ale_linters#eruby#erubi#CheckErubi'},
\ {'callback': 'ale_linters#eruby#erubi#GetCommand', 'output_stream': 'stderr'},
\ ],
\ 'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
\})
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