[TxMt] Control Arrow with camelCase and numbers

[Eric O'Brien]

With this text:

    mainNavL1

Doing Control + right arrow will move the cursor first to the  
beginning of the word, then to the left of the capital N, then left  
of the capital L, and after that pressing the keystroke no longer  
advances the cursor -- it gets "stuck" there.

It seems that the numeral ("1" here) causes the problem.  If you  
start with the cursor to the right of the entire word and use Control  
+ left arrow the problem does not occur.

eo