The
clear-external-image-conversions
function clears the external image conversions for a port. If
gp-or-null
is
nil
all conversions are cleared using the image-color-users. If
all
is non-
nil
all conversions for all ports are cleared using
gp-or-null
. Conversions are also freed if
free-image
is non-
nil
. By default,
free-image
is
t
,
all
is
(null
gp-or-null
)
, and
errorp
is
t
.