On Jan 2, 3:45 am, ashres <ash...@gmail.com> wrote:
> Hey all,
> I'm working on my first vimscript plugin. One of the things I want to
> do in the plugin is to customize the statusline, but then, at a later
> time, be able to restore it.
>
> I've a function called Startup that saves the current statusline:
>
> function! MyPlugin#Startup()
> let s:saved_statusline = &statusline
> " modify the statusline for plugin purposes here
> " ....
> endfunction
>
> And, I've got a function called Shutdown, that reverts the statusline
> back:
>
> function! MyPlugin#Shutdown()
> set statusline=%{s:saved_statusline}
> endfunction
>
> I call Startup first, then Shutdown next. I get these errors:
>
> E121: Undefined variable: s:saved_statusline
> E15: Invalid expression: s:saved_statusline
>
> Any help would be greatly appreciated!
When restoring, use
let &statusline = s:saved_statusline
instead. If the restoring function is defined in the same script as
the saving function, they will both have access to the script-local
variables of that script; but the 'statusline' and its %{} expression
are evaluated outside of any script context, and, when *evaluating*
the statusline in order to display it for a particular window,
s:saved_statusline is indeed not defined.
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