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" Author: Jake Zimmerman <>, Eddie Lebow
" Description: eruby checker using `erubis`, instead of `erb`
function! ale_linters#eruby#erubis#GetCommand(buffer) abort
let l:rails_root = ale#ruby#FindRailsRoot(a:buffer)
if empty(l:rails_root)
return 'erubis -x %t | ruby -c'
" Rails-flavored eRuby does not comply with the standard as understood by
" Erubis, 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 erubis -e ' . ale#Escape('puts${<%=},%{<%})).src') . '< %t | ruby -c'
call ale#linter#Define('eruby', {
\ 'name': 'erubis',
\ 'executable': 'erubis',
\ 'output_stream': 'stderr',
\ 'command': function('ale_linters#eruby#erubis#GetCommand'),
\ 'callback': 'ale#handlers#ruby#HandleSyntaxErrors',