" Make * and # work the way you expect in visual mode.
vnoremap * y/\V<C-R>=substitute(escape(@@,"/\\"),"\n","\\\\n","ge")<CR><CR>
vnoremap # y?\V<C-R>=substitute(escape(@@,"?\\"),"\n","\\\\n","ge")<CR><CR>
" Make * and # work the way you expect in visual mode.
vnoremap * y/\V<C-R>=substitute(escape(@@,"/\\"),"\n","\\\\n","ge")<CR><CR>
vnoremap # y?\V<C-R>=substitute(escape(@@,"?\\"),"\n","\\\\n","ge")<CR><CR>