On Tuesday, October 30, 2012 1:10:16 PM UTC-5, [email protected] wrote:
> 
> > What is the s: for that precedes the second function's name, and why
> > does it change scope (s for scope, perhaps)? Thanks.
> 
> s: stands for script. The scope of the variable is the script. As file static 
> variables in C.
> 

Any of the [gvslawtb]: prefixed variables define the scope of the variable, as 
follows:

g: global variable, accessible anywhere
v: special variable predefined by Vim only useful in certain contexts, see the 
help entry for that variable
s: script-local variable, accessible anywhere within a given script file
l: function-local variable, only accessible with the defining function
a: function argument
w: window-local variable, global variable but with a separate copy for every 
single window
t: tab-local variable, global variable but with a separate copy for each tab 
page
b: buffer-local variable, global variable but with a separate copy for each 
buffer

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