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I've grown to really appreciate the ability to press space twice on my iOS devices and have a period manually inserted without having to switch keyboards.

Though I realize the need isn't quite there on actual keyboards since the key is accessible at all times, I'm curious: Is there any way to get the same behavior using baked-in functionality on Mac OS X?

This is assuming the most recent version of Mountain Lion is installed.

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up vote 1 down vote accepted

Try this:

  1. Go to System Preferences / Language & Text / Text
  2. Add a new rule where " " (double space) is replaced with ". " (period space).
  3. Make sure you've got Symbol and Text Substitution enabled, and this new rule checked, too.

It appears not to work everywhere, though.

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Sweet, I'll check it out when I get home and accept this guy if it works out. Either way, thank you for the answer! – Terrance Shaw Nov 8 '12 at 9:13
This doesn't work in OS X 10.9.4. The original text cannot contain spaces: It's too bad, really. – Olivier Lacan Aug 30 '14 at 16:56

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