input.lua permanent changes

[cherusker]

Hello,

on my Pocketbook Touch HD 3 I want my Back button to behave like my Forward button, so I usually edit my input.lua file and replace

 [framebuffer.DEVICE_ROTATED_UPRIGHT] = {},

with

 [framebuffer.DEVICE_ROTATED_UPRIGHT] = { LPgBack = "LPgFwd", RPgBack = "RPgFwd" },

This works great, but it gets overwritten with every update of KOreader.
Is there a way to make this change permanent? Can I maybe use a DEFAULTS file for that which I'm not aware of?

Thanks for your help!

[NiLuJe]

There's a builtin setting to invert page buttons (can't quite remember where in the top menus, though, and the device I have on hand right now doesn't have buttons; use the menu search from the hamburger menu. It *might* only be visible in a document) .

Barring that, it *should* be doable in a user-patch (it will need to run *after* Device's init, though).

[cherusker]

I'm familiar with the built in "buttons swap function", but this is not what I want, unfortunately (this will simply swap the left and right buttons' functionality, but I want both to do "forward").

Thanks for pointing me towards the patches, I was not aware of those! I tried my best and came up with:

    local fn = '/mnt/ext1/applications/koreader/frontend/device/input.lua'

    local fp = io.open( fn, "r" )
    local str = fp:read( "*all" )
    str = string.gsub( str, "[framebuffer.DEVICE_ROTATED_UPRIGHT]           = {}", "[framebuffer.DEVICE_ROTATED_UPRIGHT] = { LPgBack = \"LPgFwd\", RPgBack = \"RPgFwd\" }" )
    fp:close()

    fp = io.open( fn, "w+" )
    fp:write( str )
    fp:close()

But this does not work yet. I'm not familiar with the lua script language at all. The patch does seem to get applied when opening KOreader:

03/23/23-18:27:35 INFO  Applying patch: ./patches/1-Buttons.lua

But input.lua doesn't get changed yet. Maybe a kind soul can help me out here? Thanks!

[cherusker]

OK, now it's working!!
I had to write my patch like this:

    local fn = '/mnt/ext1/applications/koreader/frontend/device/input.lua'

    local fp = io.open( fn, "r" )
    local str = fp:read( "*all" )
    str = string.gsub( str, "%[framebuffer.DEVICE_ROTATED_UPRIGHT%]           = %{%}", "%[framebuffer.DEVICE_ROTATED_UPRIGHT%] = %{ LPgBack = \"LPgFwd\", RPgBack = \"RPgFwd\" %}" )
    fp:close()

    fp = io.open( fn, "w+" )
    fp:write( str )
    fp:close()

So the brackets need the percentage sign in front of them. Cool!

[hius07]

It's not the way KOReader user patches are intended to work.

https://github.com/koreader/koreader/wiki/User-patches

[NiLuJe]

c.f., https://github.com/koreader/koreader...ent-1325997517 for a very strong hint about the right way to do this .

[NiLuJe]

Wrong button, yay double post ;p.

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Said patch will require a priority prefix >= 2