Hum, I've tried @"%{path}"@ but it doesn't work with new version of textedit.

There's a bug in textedit 2.5 that isn't in 2.4l:
After a while, the filename (only if it is given as an evar ?) will be completely messed up (with the rest of the !Textreplace line), and of course, the file will not be found. This doesn't happen if I switch back to 2.4l