autoload/shebang_change_filetype.vim


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" Check whether the first line was changed and looks like a shebang, and if
" so, re-run filetype detection
function! shebang_change_filetype#Check() abort
  if line('''[') == 1 && getline(1) =~# '^#!'
    doautocmd filetypedetect BufRead
  endif
endfunction