Set the default appearance of fringes on the selected frame.
When called interactively, query the user for MODE; valid values
are `no-fringes', `default', `left-only', `right-only', `minimal'
and `half-width'. See `fringe-styles'.
When used in a Lisp program, MODE should be one of these:
- nil, which means the default width (8 pixels).
- a cons cell (LEFT . RIGHT), where LEFT and RIGHT are
respectively the left and right fringe widths in pixels, or
nil (meaning to disable that fringe).
- a single integer, which specifies the pixel widths of both
This command may round up the left and right width specifications
to ensure that their sum is a multiple of the character width of
a frame. It never rounds up a fringe width of 0.
Fringe widths set by `set-window-fringes' override the default
fringe widths set by this command. If you want to set the
default appearance of fringes on all frames, see the command `fringe-mode'.