Finally, away with the automated entering of diacritical marks!
As I reported earlier, I have been having great trouble removing the so-called feature of OS X Lion to automatically replace vowels with one of their diacritical replacements, or nothing—if you happen not to notice the options (which happens all the time when you are a fast typer such as myself).
It seems there is a workaround available via the good old Terminal!
The explanation is in Dutch, but the Terminal commands are as is, check the site of www.apple4ever.nl.
Do this in Terminal
To make Lion stop replacing characters, do this in Terminal:
defaults write -g ApplePressAndHoldEnabled -bool false
After typing in this command, log out of your OS X account, then log back in for the changes to take effect (I got this from maclife.com, thanks!). I tried this, and it finally works!
To switch back to the old situation, do this:
defaults write -g ApplePressAndHoldEnabled -bool true
(Here are my previous ramblings)