Fix blank lines issue

In #254, probably because the tag is followed by <CR>, cstta<CR> sets regtype 'V'(linewise) though its keeper doesn't end with <CR>. And setreg() adds extra <CR> at @". Remove this extra <CR> and fix adding <CR> method.

Author: hayatogh

plugin/surround.vim

@@ -263,11 +263,16 @@ function! s:wrap(string,char,type,removed,special)
  elseif keeper =~ '\n$' && after =~ '^\n'
  let after = strpart(after,1)
  endif
- if before !~ '\n\s*$'
+ if keeper !~ '^\n' && before !~ '\n\s*$'
  let before .= "\n"
  if a:special
  let before .= "\t"
  endif
+ elseif keeper =~ '^\n' && before =~ '\n\s*$'
+ let keeper = strcharpart(keeper,1)
+ endif
+ if type ==# 'V' && keeper =~ '\n\s*\n$'
+ let keeper = strcharpart(keeper,0,strchars(keeper) - 1)
  endif
  endif
  if type ==# 'V'