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NSTextInput, multi-character marks, and the cursor position

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NSTextInput, multi-character marks, and the cursor position

Subject: NSTextInput, multi-character marks, and the cursor position
From: Jonathan del Strother <email@hidden>
Date: Tue, 27 Sep 2005 02:35:58 +0100

I have a custom class which implements the NSTextInput protocol. In, say, TextEdit, if I start typing a multi-character mark (eg switching to Japanese and typing 'aaa'), then hit the left arrow key, the cursor moves into the marked area.

In my own class, I don't receive a moveLeft: message while the mark is active. The only potentially relevant message is firstRectForCharacterRange: - the supplied range appears to be the cursor offset within the mark, but I'm a little reluctant to (ab)use this as it seems to be completely the wrong message that I'm receiving.

Any suggestions?  What am I missing?

Thanks,
Jon
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