Interesting.
It also doesn't work in TextWrangler 3.

You can achieve the same effect by making a DefaultkeyBinding.dict in ~/Library/KeyBindings
and putting the following in that file

{

/* page up/down with moving insertion point, caret */
"\UF72C" = "pageUp:";
"\UF72D" = "pageDown:";

/* Option/Alt + PgUp/PgDn */
"~\UF72C" = "scrollPageUp:";
"~\UF72D" = "scrollPageDown:";
}

which is what I have done. I can't get used to the cursor not moving when I do an unmodified PgUp and PgDn.

You can do much more than just this. See <a href=http://www.hcs.harvard.edu/~jrus/site/cocoa-text.html>this page</a> by Jacob Rus.

Berend

Old School Mac apps (TextWrangler, for instance) already do this with command-up arrow.

TextWrangler is option-down arrow and option up-arrow to scroll a page and move the cursor.

Sweet! I agree, the default Mac behavior is horrible. It's far more common for me to use the keyboard to jump around a document because I'd like to type something when I get there. Leaving the cursor behind is a very rare case.

Thanks for posting the key binding thing!