Error on non-projection R navigation commands

Author: tpope

autoload/rails.vim

@@ -2545,9 +2545,9 @@ call s:add_methods('app', ['commands'])
 
 function! s:addfilecmds(type)
   let l = s:sub(a:type,'^.','\l&')
+  let cplt = " -complete=customlist,".s:sid.l."List"
   for prefix in ['E', 'S', 'V', 'T', 'D', 'R', 'RE', 'RS', 'RV', 'RT', 'RD']
-    let cplt = " -complete=customlist,".s:sid.l."List"
-    exe "command! -buffer -bar ".(prefix =~# 'D' ? '-range=0 ' : '')."-nargs=*".cplt." ".prefix.l." :execute s:".l.'Edit("<mods> '.(prefix =~# 'D' ? '<line1>' : '').s:sub(prefix, '^R', '').'<bang>",<f-args>)'
+    exe "command! -buffer -bar ".(prefix =~# 'D' ? '-range=0 ' : '')."-nargs=*".cplt." ".prefix.l." :execute s:r_error('".prefix."',s:".l.'Edit("<mods> '.(prefix =~# 'D' ? '<line1>' : '').s:sub(prefix, '^R', '').'<bang>",<f-args>))'
   endfor
 endfunction