Douglas Cootey (@SplinteredMind at Twitter) tells me that Snow Leopard, the new Mac operating system, has a text substitution function that you can set up so it inserts an interrobang (‽) when you type something such as ?!
Here’s how Douglas says to do it:
- Go to System Preferences>Language & Text>Text (to define the replacements you want).
- To enable substitutions in an application, right click or control click in any text field and check (√) Substitutions you want. (Smart Quotes, etc.)
Another site explains that you only have to enable text substitution once for each application.
I don’t have Snow Leopard, but I hope this works for those of you who do!
[UPDATE 9/2/09: Chris Anna (@Chris_Anna) notes that you can do this in Microsoft Word too.]