:Rmigration 000 edits migration 000

I recently worked on an application in which some clown started the
migrations at 0, for reasons unknown.

Author: tpope

autoload/rails.vim

@@ -2372,7 +2372,7 @@ endfunction
 
 function! s:app_migration(file) dict
   let arg = a:file
-  if arg =~ '^0\+$\|^0*[#:]'
+  if arg =~ '^0$\|^0\=[#:]'
     let suffix = s:sub(arg,'^0*','')
     if self.has_file('db/schema.rb')
       return 'db/schema.rb'.suffix