Wrapped lines generally cause trouble and make stuff hard to read. The
right solution, given a file with lots of long lines, is either to fix
the long lines, or to view in a wider window.
(setq scroll-step 5) ;Don't scroll too much at a time
(setq-default fill-column 77) ;I use rather narrow windows
(setq-default comment-column 40) ;Set a standard comment column
-(setq-default truncate-partial-width-windows nil)
+(setq-default truncate-partial-width-windows nil
+ truncate-lines t)
(setq default-indicate-empty-lines t)
(setq whitespace-style
'(trailing space-before-tab space-after-tab empty indentation))