Disable ctrl-w backward deletions in zsh
Disable ctrl-w backward deletions in zsh

I added this binding to make ctrl-w always delete even if you started
insert mode when there was already some text. The problem is this
backward-kill-world command doesn't do the same thing as the default
ctrl-w behavior. Specifically for file paths, it deletes the whole thing
instead of component by component. In theory I could solve this with
something like:

```
tcsh-backward-delete-word () {
  local WORDCHARS="${WORDCHARS:s#/#}"
  zle backward-delete-word
}
zle -N tcsh-backward-delete-word
bindkey -M viins '^W' tcsh-backward-delete-word
```

But I'm currently not too annoyed by this. I'll revisit this when I am.

keith/dotfiles,keith/dotfiles,keith/dotfiles,keith/dotfiles,keith/dotfiles,keith/dotfiles