[JimmXinu]

Originally Posted by hius07

CalibreSearch can be found as an upvalue in some of the main module methods.
Look for example at
https://github.com/koreader/koreader...ent-2871327027

I got as far as userpatch.getUpValue() before, but apparently I misunderstand it.

I have:

local userpatch = require("userpatch")

userpatch.registerPatchPluginFunc("calibre", function(Calibre)

    local CalibreSearch, up_idx = userpatch.getUpValue(Calibre.onCalibreSearch, "CalibreSearch")

    print("\ncalibre patch CalibreSearch:")
    print(CalibreSearch)
    
end)

And calibre.koplugin/main.lua contains a reference to CalibreSearch:

function Calibre:onCalibreSearch()
    CalibreSearch:ShowSearch()
    return true
end

But I just get 'nil' printed in the crash.log.

ADDENDUM

Of all the Calibre methods that reference CalibreSearch, getSearchMenuTable is the only one that gives me that reference from getUpValue:

userpatch.registerPatchPluginFunc("calibre", function(Calibre)

    local CalibreSearch, up_idx = userpatch. getUpValue(Calibre.getSearchMenuTable, "CalibreSearch")

    print("\ncalibre patch CalibreSearch:")
    print(CalibreSearch)
    
end)

No idea why that one works and the others don't.