//write global.txt Pie | echo -a $read(global.txt,n,1) | .remove global.txt

Enough said?

'global', 'ip', 'prn', 'con', 'shadow', and various others are recognised as names of windows devices by mIRC and they'll not be written to for that reason.

I'm told it works without error on 6.16

Hixxy, then suggest this the added to the documentation, it's quote annoying.

This is also mentioned in the recent thread: https://forums.mirc.com/ubbthreads.php?ubb=showflat&Number=174607

Sat also has a utility at http://www.xise.nl/mirc/devices.zip that shows which device names are blocked. mIRC has no way of knowing which device names will put you in a world of hurt if written to, so it plays it safe and avoids writing to them.

Perhaps a better solution is to change the error from

* /write: unable to open file

to

* /write: unable to open reserved filename

As hixxy said you cant make files with these names on windows.

Go on try calling a folder 'con' it will not work.

My point was that some you can, and some you can't - mIRC creates an error message when trying to create folders named IP, GLOBAL, SHADOW, etc - but it does create them. It won't read from IP.TXT GLOBAL.TXT SHADOW.TXT, but Win Explorer CAN create them. However, there's enough of a minefield out there that mIRC plays it safe and stays away from all reserved names.