Looks like `xunfunction` should be called at end of `zshrc`

[xaocon]

It looks to me like xunfunction should be called near the end of etc/zsh/zshrc. I see unfunction grml_status_feature so maybe it should be called there but grml_status_feature should be added as a function to remove?

[zeha]

xunfunction should go away, is what I'm inferring from the git history.

[mika]

xunfunction should go away, is what I'm inferring from the git history.

@ft maybe you could help us out and see what we could do about the xunfunction function and how to deal with it? 😄

[ft]

I think the purpose of the function was to reduce command namespace contamination from functions mainly used within the setup. I don't remember why we did that in yet another function, though. And we've also never made a point of maintaining this thing. I think it's probably a good candidate for removal.

[zeha]

724508d tried to remove it, but didn't explain in detail why. But let's do it now.

[mika]

@zeha from commit 724508d, @ft noted:

  * zshrc: remove xunfunction() altogether; it prevented things like
           'source ~/.zshrc' from working.