One trick which sometimes work, is to use CTRL A to mark everything, then CTRL C to copy it to clipboard, and then go to any text editor and CTRL V paste the text there for editin that out what you do not want.

I've made a proposal that shortcutd would have user configurable menus, where one could also put "emit-key-foreground ^A" (and ^C, ^V); so one wouldn't have to open physical qwerty-keyboard in these cases where application does not have clipboard tools in its program menu.
https://bugs.maemo.org/show_bug.cgi?id=9646