Corrected idea:
You can try adding a line between lines 20 and 21 of frontend/ui/widget/filechooser.lua. These lines are:
Code:
for f in lfs.dir(self.path) do
if self.show_hidden or not string.match(f, "^%.[^.]") then
It should be changed to:
Code:
for f in lfs.dir(self.path) do
self.show_hidden = true
if self.show_hidden or not string.match(f, "^%.[^.]") then
It's a bit of a kludge, but it should work.
I haven't had a chance to test it since I haven't managed to get koreader to work after a factory reset (!), but there is no reason why it shouldn't work. (Just keep a backup of the original file to be safe.)