selection=exclusive word selection bug?

[Kyle Marek]

Hello,

If you start a `vim -u NONE`, then set mouse=a selection=exclusive, and
then use the mouse to select words from right-to-left (double-click/drag
to the left), the starting word is excluded from the selection.

Is this intentional? It isn't described for 'selection' in options.txt.

Sometimes I like the behavior of excluding the character on the right
corner, but I don't like this behavior for word selection.

Thank you,
Kyle Marek