Bug introduced in 10.0.1 and fixed in 10.0.2
I observed the following with StringCases
when trying to use rules/patterns. Here is a screenshot of the behavior:
Not only is the pattern highlighted in red, hovering the mouse over it claims it's an unknown option as shown above. Can anyone confirm this behavior? I'm on Windows 8.1. Regardless of this behavior, it does appear to work as expected.
StringCases["item13", {"item"~~x:DigitCharacter.. :> x}]
$\endgroup$