There are a number of ways to cut, copy, and paste text in the editor:

It is important to note which actions use the system-wide clipboard, which use the emacs private clipboard or VI registers, and which use the X windows selection (X Windows only). Otherwise, these commands are interchangeable in their effects.

Smart Copy

Wing can be configured to copy or cut the whole current line when there is no selection on the editor. This is done with On Empty Selection in the Editor > Clipboard preference group. The default is to use the whole line on copy but not cut.