The fringe bitmaps are the actual bitmaps which represent the
logical fringe indicators for truncated or continued lines, buffer
boundaries, overlay arrows, etc. Each bitmap is represented by a
These symbols are referred to by the variable
fringe-indicator-alist, which maps fringe indicators to bitmaps
(see Fringe Indicators), and the variable
fringe-cursor-alist, which maps fringe cursors to bitmaps
(see Fringe Cursors).
Lisp programs can also directly display a bitmap in the left or
right fringe, by using a
display property for one of the
characters appearing in the line (see Other Display Specs). Such
a display specification has the form
(fringe bitmap [face])
fringe is either the symbol
right-fringe. bitmap is a symbol identifying the bitmap
to display. The optional face names a face whose foreground
color is used to display the bitmap; this face is automatically merged
Here is a list of the standard fringe bitmaps defined in Emacs, and
how they are currently used in Emacs (via
The next subsection describes how to define your own fringe bitmaps.
This function returns the fringe bitmaps of the display line containing position pos in window window. The return value has the form
(left right ov
), where left is the symbol for the fringe bitmap in the left fringe (or
nilif no bitmap), right is similar for the right fringe, and ov is non-
nilif there is an overlay arrow in the left fringe.
The value is
nilif pos is not visible in window. If window is
nil, that stands for the selected window. If pos is
nil, that stands for the value of point in window.