Sure, the 'custom folder' idea was just to keep plugin preview working for you in any case until a global solution is found... You can leave the file where it is and redo the patch if you reinstall JeF's interface before fix is released.
I think i will find a global solution using utf-8 encoding, so this will work for all charsets (without 55* specific behaviours).

v0.813 : bug fixes in Extra Queries Module
- Fix move up/down query
- Fix import (from examples on forum)
- Fix preview : cyrillic characters should now be correctly displayed
- Added message when sql command is invalid (just a fail status, not a syntax analyzer/helper)
- one new string in language file
JeF

It doesn't know how to output result with aliases, right? I mean, when query is:

the result is:

Yes, it did a very basic syntax analysis of the string before 'from' clause.
v0.814 now suports aliases.
Are cyrillic characters now ok in preview without patching 'List.html' ?
JeF

Oh, yes. It's OK now. Thanks. But there is a new strange problem
I added the new query:

It works great (BTW, try this... very useful for search of double persons). And when I press "Close" button, error window says:

That's all, the window is too small to fit entire message.
So I can't save my favorite query.
I've tried all categories, all names. Nothing helps

Thanks for testing.
Ok, this is due to '<' character which was wrongly interpreted as xml begin tag (sql command wasn't protected/encoded)...
v0.815 fixes this. You can now save your prefered query
Thanks for the query, added to 'Extra Queries' topic
JeF

Thanks again

Wow, Hall of Fame
BTW, this query is only useful with this plugin: you can save the result, compare it with previous one, mark good persons green, bad ones red and so on...

Bad news, good news...
Bad news: 0.815 crashes the program
Good news: that's all.

Ok, v0.816 has 'crash feature' disabled
JeF

Yeah, the "Limited Edition" works fine, thanks