Hi LCD!

On Do, 11 Apr 2013, LCD 47 wrote:

> On 10 April 2013, Christian Brabandt <[email protected]> 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

did you lock it? It worked for me with some test variable.

> Is it safe / sane to unlock it?

I don't know. This depends on what locked it, I guess.

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

Don't know.

regards,
Christian
-- 
Selbst eine gute Ehe ist Bußzeit.
        -- Russisches Sprichwort

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