Hi Arthur, this is "plain text" because 9660 is an valid unicode char. ==>
http://www.fileformat.info/info/unicode/char/25bc/index.htm The ▼ is only an strange sign because we do not use it , like the chars 177 or 178 from ASCII table =>
http://www.asciitable.com/I think if you copy it - you want it.
From where should HippoEDIT know what char you want and what not?
There could be an option to insert only ascii chars 32 till 126, but then country specific chars (like 128-140) are dropped too.
And for each different codepage there are other country specific chars.
And even more with unicode.
For such issues there should be user-converters to delete such chars/signs from document.
I have allready suggested such converters.
And if there is sometimes scripting you would be able to make your own paste-as-HTML script
which first calls the paste-as-HTML command and then as second step call your converter.
I hope with this converters we can format all pasting situations like dropping leading spaces and '>' -signs while copying from eMail, f.ex.
But maybe i am wrong and Alex want to implement an option to paste only chars the user has defined, or he have an completely other thought?

---------- EDIT:
you may be interested in this topic too ==>
Paste as HTML without meta dataYou are able to paste "as HTML" with a few options.