I think it would be a good idea to add a shortcut when you are Editing Text to make bigger the zoom with Ctrl+ Plus(+) and smaller with Ctrl+ Minus(-) like the internet browsers.
In normal view there is a zoom in and zoom out shortcut with Plus(+) and Minus(-) Keys, but not at the editing mode.
In fact, I think it would be better to use the Ctrl+ Plus(+) and Ctrl+ Minus(-) in the normal view too, because its a more standard way.
Operating System: All
good one, set to new
It could be usefull, besides zoom in (Ctrl +) and zoom out (Ctrl -), to deploy the "Ctrl + 0" to make a zoom reset like in Firefos and Chrome too.
*** This bug has been marked as a duplicate of bug 45705 ***