Undercurl gap problem

I set guisp color of CursorLine in color file:

hi CursorLine guifg=NONE guibg=#121212 gui=undercurl
ctermfg=NONE ctermbg=NONE cterm=BOLD guisp=#ffc600

and got 32-letter wide gap in undercurl:
http://vim.1045645.n5.nabble.com/file/n3251541/2010-11-03_175511.png

Anyone know how to fix it? Thanks.
--
View this message in context: http://vim.1045645.n5.nabble.com/Undercurl-gap-problem-tp3251541p3251541.html
Sent from the Vim - General mailing list archive at Nabble.com.

--
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