[SVN] r9281

[Thomas Aylott]

Improved current word. Return nil to block on cancel.
Improved the default current_word match using the current_word library and the extra_chars option and from the left of the caret only.
When the user implicitly or explicitly cancels the popup it will now return nil to the block. The default block now catches this value and aborts.

Changed:
U   trunk/Review/Support/lib/ui.rb