[jnote]

Originally Posted by JimmXinu

Glad you got it working.

FYI, you can save several steps like so:

find ~/Documents/mergeTest/ -type f -print0 | xargs -0 calibre-debug --run-plugin EpubMerge --

thanks for the tip

and gpt4 create this batch file, it works well
(assuming that calibre-debug included in your windows path)

@echo off
setlocal enabledelayedexpansion

set FILES=
for %%f in ("C:\your_path\*.epub") do (
    set FILES=!FILES! "%%f"
)

calibre-debug --run-plugin EpubMerge -- %FILES%