Yes.The second is right. first you must know \\ = \ in substitude and match.
like this : \\\\ is match \\. and \\ is match \. \%(\\\)\@<!\\\%(\\\)\@! you can split it to three part : \%(\\\)\@<! \\ \%(\\\)\@! it match "\",and this "\" havn't "\" before and follow it . you can read the vim help.there are some examples. :h :s :h \@<! :h \@! 2011-01-26 ifys0325 -- You received this message from the "vim_use" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
