Before, 50000 was the limit. It recently has been extended for custom windows (intentionally, I hope), using -jN you can specify a number such as 10 millions and that will work. However note that getting a custom windows with 10 millions lines (I made the test) will make mIRC takes a lot of memory. depending on your configuration, mIRC can occupy a maximum of 2GB or 4GB of ram (
read ) . If you reach this maximum, you'll get one of these errors:
* Error allocating command memory
* Error allocating token memory
* /cmd: error allocating memory
Meaning mIRC can no longer allocate memory and it's tricky for an application to stay alive after getting an error regarding memory allocation, so be careful. In my test, I wasn't able to close/reboot mIRC properly, it would stay in memory after closing it (although the UI disappeared), /run mspaint wouldn't work either.