A keyboard shortcut in Keynote to edit a text object without clicking it

I've been looking for doing this for a very long time.

I finally managed to end up with something that really works great for me, with the help of Alfred and Highlight CLI tool.

Here is the Alfred script portion :

query="{query}"
if echo $query|grep -e "^__SHORTCUT__"
then
    echo "$query"|sed -E "s/^__SHORTCUT__//"|pbcopy
    syntax=txt
else
    osascript -e 'tell application "System Events" to keystroke "c" using {command down}'
    syntax=$query
fi

pbpaste|/usr/local/bin/highlight --syntax $syntax --font Menlo --font-size 12 --out-format=rtf|pbcopy
osascript -e 'tell application "System Events" to keystroke "v" using {command down}'

Make sure the shortcut trigger adds __SHORTCUT__ to be recognized and argument is "Selection in OSX" :

Short demo https://youtu.be/y8NJT52APRQ

Pressing ⌃⌘+ or ⌃⌘- again seems to remove superscript or subscript in Keynote '09.

Other applications like TextEdit raise or lower the text multiple times though.

You could give custom shortcuts to nested menu items on 10.7, but it stopped working on 10.8.

Another option would be to create ~/Library/KeyBindings/ and save a property list like this as DefaultKeyBinding.dict, but it doesn't seem to work in iWork applications.

{
    "^@=" = unscript:;
}

You could also assing a shortcut to a script like this:

try
    tell application "System Events" to tell (process 1 where it is frontmost)
        click menu item "Use Default" of menu 1 of menu item "Baseline" of menu 1 of menu item "Font" of menu "Format" of menu bar 1
    end tell
end try