Vim comma key not working

vim

Solution

Solved. Somehow or another, I had:

set cinkeys=0{,0},:,!,0#,!^F

in my .vimrc. Removing the !, fixed the issue.

Problem

This is driving me batty. Using Vim 7.2.182 on Gentoo. In insert mode, my comma key does nothing. There's nothing in .vimrc that includes the comma key. :map shows no mapping that includes a comma. It's not a keyboard or similar issue: the comma key works fine in all other applications and in Vim in command mode, etc. But when I go into Insert mode, pressing the key does nothing at all. I've even tried explicitly mapping the comma key to a comma but that appears to have no effect. Google searches have proved fruitless. Any clues?

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