Text Input word boundaries are inconvenient (unexpected Ctrl+Backspace behavior)

[Mattwmaster58]

When working with path strings, I frequently use Ctrl+Backspace to remove a node from the path. However, in all the input widgets, the word boundaries are inconsistent with the convention of \ being a word boundary. So instead of removing a node (usually), it removes the entire path.

eg C:\Data\my\data (Ctrl+Backspace) ->

instead of the expected C:\Data\my\data (Ctrl+Backspace) -> C:\Data\my\