:spellgood w/o

I asked this question on [Super User][0], but I figured that I would try here as well.

I am trying to do:

:spellgood w/o

I get an error message saying

> Unrecognized flags in ~/.vim/spell/en.utf-8.add line 16

I have attempted the following to no avail:

:spellgood w\/o
:spellgood w//o
:spellgood "w/o"
:spellgood 'w/o'

I also tried visually selecting the word in question and hitting `zg`. Same error.

How can I get vim to stop telling me that **w/o** is a bad word?

Adding **o** to the spell file or capitalizing **w/o** to **W/O** works, but those options make me sad.

The [spell-SLASH][1] help text points in a direction of how to do this, but this is for .dic files. Is using .dic files a better alternative? If so, I can't figure out for the life of me how to use them.

Any help will be greatly appreciated.

[0]: http://superuser.com/q/623336/3304
[1]: http://vimdoc.sourceforge.net/htmldoc/spell.html#spell-SLASH

--
--
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

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.