fringe-query-style

fringe-query-style is a compiled Lisp function in `fringe.el'.

(fringe-query-style &optional ALL-FRAMES)

Query user for fringe style.
Returns values suitable for left-fringe and right-fringe frame parameters.
If ALL-FRAMES, the negation of the fringe values in
`default-frame-alist' is used when user enters the empty string.
Otherwise the negation of the fringe value in the currently selected
frame parameter is used.