Re: unlet-ing variables in buffers?

On 10 April 2013, Christian Brabandt <cblists@256bit.org> wrote:
> Hi LCD!

Hi!

> On Mi, 10 Apr 2013, LCD 47 wrote:
>
> > Variables local to (non-current) buffers can be read with
> > getbufvar() and written with setbufvar(). Is there a way to delete
> > variables from buffers? That is, is there a moral equivalent of
> > "unlet b:var" for non-current buffers?
>
> I think, since you only get references to variables when using
> getbufvar() you can simply modify the returned b: dict
>
> :call setbufvar(1, 'foobar', 2)
> :let var=getbufvar(1, '')
> :call filter(var, 'v:key != ''foobar''')
> :echo getbufvar(1, 'foobar')

Hmm, interesting idea, but "var" is locked:

E741: Value is locked: filter() argument

Is it safe / sane to unlock it?

Also, I presume Vim maintains reference counts and the like for
garbage collection, would this kind of manipulation do the right
adjustments?

/lcd

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.