Fix calling autocmd while in omnifunc completion

[barlik]

<c-o> doesn't escape insert mode when used with omnifunc completion. Instead, use <c-\><c-o> to switch to normal mode. Edit: fix wrong escaping

[wincent]

Thanks @barlik. This seems like a harmless enough change, so I am happy to merge it, but I'd like to understand the problem that it fixes. I know from the help the difference between the two bindings:

CTRL-O      execute one command, return to Insert mode   *i_CTRL-O*
CTRL-\ CTRL-O   like CTRL-O but don't move the cursor        *i_CTRL-\_CTRL-O*

but I'd like to know how the problem you were seeing manifests in practice. How would I repro it?

[barlik]

In order to test the behaviour, you need to have omnifunc defined. There are a couple of filetype plugins provided by vim that use omnifunc, for example you can pick html.

Steps to replicate:

• vim file.html
• make sure that you have omnifunc defined set omnifunc?
• type <ab and then <c-x><c-o> to list possible completions that begins with <ab
• now, switch to a different window, this should trigger doautocmd <nomodeline> FocusLost %
• switch back and you'll see that the above command was not triggered, but literally inserted into the buffer.

[wincent]

Excellent. Thanks for the clarification!

[wincent]

Merged this onto the next branch. Thanks!