Subject: bug#16474: 24.3.50; `set-window-scroll-bars` has no effect after you set it once to zero

From: martin rudalics <[email-masked]>
Date: Fri, 17 Jan 2014 08:20:06 +0100

> M-: (set-window-scroll-bars nil 0)
 >
 > The scroll bar disappears.
 >
 > M-: (window-scroll-bars)
 >
 > returns (0 0 nil nil)
 >
 > M-: (set-window-scroll-bars nil 20)
 >
 > has no visible effect.

Obviously so:

Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
bar: left, right, or nil.

You specified nil.

martin