Special Text-Editing Considerations
It's worth taking a little time to look at a few issues that arise when you're writing a Unicode-compatible text-editing utility. There are a number of Unicode-specific things to keep in mind when allowing a user to edit text.
Optimizing for Editing Performance
The first issue isn't actually Unicode-specific at all, but if you don't already know about it, it's worth taking a few minutes to discuss. That's a useful technique for speeding performance during editing.
Suppose you have a 1 million character document, and you start typing at the beginning. If you've stored your text in a single contiguous block (probably with some slop space at the end so you don't have to reallocate your character storage on every ...
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