diff --git a/plugins/degesch/fancy-prompt.lua b/plugins/degesch/fancy-prompt.lua
index 300801e..93fe67c 100644
--- a/plugins/degesch/fancy-prompt.lua
+++ b/plugins/degesch/fancy-prompt.lua
@@ -64,12 +64,13 @@ degesch.hook_prompt (function (hook)
 	local lines, cols = degesch.get_screen_size ()
 	x = x .. " " .. active .. string.rep (" ", cols)
 
-	-- Readline seems to be broken and completely corrupts the prompt
-	-- (tested on 7.0.003 Archlinux, 7.0-5 Debian buster)
-	x = x:gsub("[\128-\255]", "?")
+	-- Readline 7.0.003 seems to be broken and completely corrupts the prompt.
+	-- However 8.0.004 seems to be fine with these, as is libedit 20191231-3.1.
+	--x = x:gsub("[\128-\255]", "?")
 
 	-- Cut off extra characters and apply formatting, including the hack.
-	-- Note that this doesn't count with full-width or zero-width characters.
+	-- FIXME: this doesn't count with full-width or zero-width characters.
+	--   We might want to export wcwidth() above term_from_utf8 somehow.
 	local overflow = utf8.offset (x, cols - 1)
 	if overflow then x = x:sub (1, overflow) end
 	x = "\x01\x1b[0;4;1;38;5;16m\x1b[48;5;" .. bg_color .. "m\x02" ..