9abf215871bf521212e7dc2745526d07fc4e543e
When deleting the match, w:old_cword has to be unset as well. Otherwise it can happen that it is not properly readded (e.g. when moving from a word to an empty line and then back to the same word).
My dotfiles
Installation
$ ./meta/install
Languages
Shell
79.7%
Vim Script
18.7%
JavaScript
0.6%
CSS
0.6%
Python
0.3%