I know how to use the menu to change case, but I want it to be a keyboard shortcut. Other text editor have this feature but I would prefer to stick with TextWrangler.
Does one already exist or is there another way, such as a Preference setting or an existing Applescript?
You can do that by setting a Menu Item shortcut key.
Under Snow Leopard, go to System Preferences > Keyboard
Click on the "Keyboard Shortcuts" tab, the the "+" sign at the bottom to assign a new shortcut.
In "Application", choose "TextWrangler", for "Menu Title", type "Change Case", and put in your desired keyboard shortcut.
Your TextWrangler "Text" menu item should now show a new "Change Case" option with the keyboard shortcut assigned.
For Leopard 10.5, it is the same procedure, just that you go to System Preferences > Keyboard & Mouse, instead of System Preferences, Keyboard.
