HOWTO: store option settings in a variable

[Jason Aeschilman]

I wanted to save the current setting for an option so I could change 
that option temporarily then set it back to what it was.  Specifically, 
I'm using the Cfname.vim plugin and it hard sets the statusline option 
then hard sets it back.  I already improved it to work "on demand" by 
creating a toggle to turn it on and off.  I wanted to improve it further 
by storing the user's current statusline setting when toggling it on 
then restoring the statusline setting when toggling it off.  I was going 
to ask in this list how to do this but I ended up figuring it out on my 
own.  I'll go ahead and post my solution in case someone finds it 
useful.  This seems to work but if anyone can see any problems with this 
or a better way to do it, please let me know.

"save user's current statusline option
let g:CF_statusline=escape(getbufvar(1, "&statusline"), " ")
"set statusline back to previous setting
execute 'set statusline=' . g:CF_statusline

Jason Aeschilman