Select: highlighting not according to spec

[bill]

In 0.4.3, ​http://download.dojotoolkit.org/release-0.4.3/dojo-0.4.3-widget/tests/widget/test_Select.html even with autocomplete=true, you can type a few letters (like "al") then use down arrow to go through the list of options, and then type another letter and the autocompleted characters (the characters filled in automaticaly in the <input>) are erased and replaced by the letter you typed.

This is because the autocompleted characters are highlighted, so that typing another character erases them (and restores the input box to what the user typed manually).

For the same reason, typing the delete key erases the autocompleted characters.

0.9 should function similarly.

[Douglas Hays]

(In [8940]) Fixes #3284. Proxy commit for haysmark. Before this change, if you arrowed through the menu, the text of the menu item replaced the value inside the textbox, per a11y requirements. If you decided to type text after you had started scrolling through the menu, the typed text was appended to the END of the autocompleted text. Now when you arrow down through the ComboBox? menu, the text that automatically appears in the textbox is "autocompleted" (highlighted) so that if you want to type more as you scroll through the menu, your typing erases the autocompleted text. Similarly, if you press backspace you will clear the autocompleted text, leaving just what you manually typed.