Well you could override the template for the XML field and there replace manually the (TM) simbol with the relevant ascii code. But this is not a real sollution, more like a workaround.
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Nothing is impossible. Not if you can imagine it!
I changed the charset of the site in /settings/override/i18n.ini.append to utf-8. This has sucessfully changed the charset of the site, but doesn't seem to have helped.
Trademark symbols pasted into the content now appear as a row of meaningless characters,
if I enter the code ™ I still get the same response- If the editor is on it changes them into ? characters, if it is off the code is just displayed, not converted to a trademark..
thanks for the response. I've had a look at what's involved in changing the database and it all seems a bit much just to enable us to display the trademark symbol, particularly having found references to bugs in the MYSQL UTF-8 charset.
As such I will advise my user to just type (TM) and give up on getting the actual symbol displayed. Not a perfect solution, but preferable to risking cocking up the database.