I tested AltGr-Ctrl-9 again, and it does work. It seems to work reliably by pressing it once on an empty line, then pressing enter. In my example above, the text "...doesn't work" caused the escape sequence to be ignored.
I tested AltGr-Ctrl-9 again, and it does work. It seems to work reliably by pressing it once on an empty line, then pressing enter. In my example above, the text "...doesn't work" caused the escape sequence to be ignored.